Patent application number | Description | Published |
20090091577 | Compression of Multiple-Sample-Anti-Aliasing Title Data in a Graphics Pipeline - Provided is a system for compressing multiple-sample-anti-aliasing (MSAA) tile data in a computer graphics pipeline. The system includes a plurality of pixels configured as a tile, where the tile has a plurality of samples of descriptor data for the pixels. Multiple graphics data processing units configured to receive the plurality of samples contain a plurality of coverage masks, which correspond to covered subtiles and compression logic encodes the tile descriptor data for receipt by a buffer. | 04-09-2009 |
20090251476 | Constant Buffering for a Computational Core of a Programmable Graphics Processing Unit - Embodiments of systems and methods for managing a constant buffer with rendering context specific data in multithreaded parallel computational GPU core are disclosed. Briefly described, one method embodiment, among others, comprises responsive to a first shader operation, receiving at a constant buffer a first group of constants corresponding to a first rendering context, and responsive to a second shader operation, receiving at the constant buffer a second group of constants corresponding to a second context without flushing the first group. | 10-08-2009 |
20120069033 | Constant Buffering for a Computational Core of a Programmable Graphics Processing Unit - Embodiments of the present disclosure are directed to graphics processing systems, comprising: a plurality of execution units, wherein one of the execution units is configurable to process a thread corresponding to a rendering context, wherein the rendering context comprises a plurality of constants with a priority level; a constant buffer configurable to store the constants of the rendering context into a plurality of slot in a physical storage space; and an execution unit control unit configurable to assign the thread to one of the execution units; a constant buffer control unit providing a translation table for the rendering context to map the corresponding constants into the slots of the physical storage space. Comparable methods are also disclosed. | 03-22-2012 |
20120092353 | Systems and Methods for Video Processing - A multi-shader system in a programmable graphics processing unit (GPU) for processing video data, includes a first shader stage configured to receive slice data from a frame buffer and perform variable length decoding (VLD), wherein the first shader stage outputs data to a first buffer within the frame buffer; a second shader stage configured to receive the output data from the first shader stage and perform transformation and motion compensation on the slice data, wherein the second shader stage outputs decoded slice data to a second buffer within the frame buffer; a third shader stage configured to receive the decoded slice data and perform in-loop deblocking filtering (IDF) on the frame buffer; a fourth shader stage configured to perform post-processing on the frame buffer; and a scheduler configured to schedule execution of the shader stages, the scheduler comprising a plurality of counter registers; wherein execution of the shader stages is synchronized utilizing the counter registers. | 04-19-2012 |
20130166885 | METHOD AND APPARATUS FOR ON-CHIP TEMPERATURE - When an instruction is executed on an integrated circuit (IC), an activity level and temperature are measured. A relationship between the activity level and temperature is determined, to estimate the temperature from the activity level. The activity level is monitored and is input to a scheduler, which estimates the IC temperature based on the activity level. The scheduler distributes work taking into account the temperature of various IC regions and may include distributing work to the IC region that has a lowest estimated temperature or relatively lower estimated temperature (e.g., lower than the average IC or IC region temperature). When the utilization level of one or more IC regions is high, the scheduler is configured to reduce the clock speed or the voltage of the one or more IC regions, or flag the regions as being unavailable for additional workload. | 06-27-2013 |
20150081932 | SCHEDULING, IN-MEMORY CODING, DATA WIRE MATCHING, AND WIRE PLACEMENT FOR WIRE POWER REDUCTION - According to one general aspect, an apparatus may include a source unit, a destination unit, and a plurality of interconnect wires. The source unit may be configured to store, at least temporarily, data, wherein the data is written to a storage structure in a plurality of data structures. The destination unit may be configured to receive at least a portion of the data from the source unit. The plurality of interconnect wires may be configured to transmit, the at least a portion of the data between the source unit and the destination unit. The source unit may include a transmission management unit configured to re-order the data to a re-ordered format, and wherein the re-ordered format is configured to reduce power incurred during the transmission of the at least a portion of the data across the plurality of interconnect wires. | 03-19-2015 |
20150378733 | REDUNDANCY ELIMINATION IN SINGLE INSTRUCTION MULTIPLE DATA/THREAD (SIMD/T) EXECUTION PROCESSING - A method for reducing execution of redundant threads in a processing environment. The method includes detecting threads that include redundant work among many different threads. Multiple threads from the detected threads are grouped into one or more thread clusters based on determining same thread computation results. Execution of all but a particular one thread in each of the one or more thread clusters is suppressed. The particular one thread in each of the one or more thread clusters is executed. Results determined from execution of the particular one thread in each of the one or more thread clusters are broadcasted to other threads in each of the one or more thread clusters. | 12-31-2015 |
20160042561 | METHOD AND APPARATUS FOR PERFORMING TILE-BASED PATH RENDERING - A method of rendering at least one of paths forming an object includes setting an initial value to each of tiles included in a frame based on a position and a proceeding direction of the at least one of paths, calculating a winding number of each of the tiles through which the at least one of paths passes, among the tiles included in the frame, based on the set initial value, and determining whether to perform shading based on the set initial value and the calculated winding number. | 02-11-2016 |
Patent application number | Description | Published |
20100240556 | Wellbore Servicing Compositions Comprising a Set Retarding Agent and Methods of Making and Using Same - A method of servicing a wellbore comprising preparing a composition comprising a calcium aluminate cement, water, a polyphosphate, a pozzolan, and a set retarding agent, wherein the set retarding agent comprises an alkali halide and a basic phosphate salt, placing the composition in the wellbore and allowing the composition to set. A composition comprising a calcium aluminate cement in an amount of from about 30 wt. % to about 60 wt. % and a set retarding agent in an amount of from about 0.1 wt. % to about 15 wt. % based upon the total weight of the composition, wherein the set retarding agent comprises an alkali halide and a basic phosphate salt in a ratio of from about 3:1 to about 1:3. | 09-23-2010 |
20110042081 | Methods and Apparatuses for Releasing a Chemical into a Well Bore Upon Command - Methods and apparatuses for releasing a chemical in a well bore are disclosed. One apparatus includes a curved member configured for coupling to a casing, and a hollow member is connected to the curved member. A chemical container is disposed, at least in part, within the hollow space, and the hollow member extends at least partially around a hollow space. | 02-24-2011 |
20120061072 | METHODS AND APPARATUSES FOR RELEASING A CHEMICAL INTO A WELL BORE UPON COMMAND - Methods and apparatuses for releasing a chemical in a well bore are disclosed. One apparatus includes a curved member configured for coupling to a casing, and a hollow member is connected to the curved member. A chemical container is disposed, at least in part, within the hollow space, and the hollow member extends at least partially around a hollow space. | 03-15-2012 |
20120199350 | Low Heat of Hydration Cement Compositions and Methods of Using Same - A method of servicing a wellbore in a subterranean formation, comprising preparing a cement composition comprising water and a cementitious material, wherein the cementitious material further comprises blast furnace slag, vitrified shale, calcium sulfate hemi-hydrate or combinations thereof, and placing the cement composition in the wellbore. A cement composition comprising water and a cementitious material, wherein the cementitious material further comprises blast furnace slag, vitrified shale, calcium sulfate hemi-hydrate or combinations thereof. A cement composition comprising water and a cementitious material, wherein the cementitious material further comprises blast furnace slag. | 08-09-2012 |
20130008353 | Low Heat of Hydration Cement Compositions and Methods of Using Same - A method of servicing a wellbore in a subterranean formation, comprising preparing a cement composition comprising water and a cementitious material, wherein the cementitious material further comprises blast furnace slag, vitrified shale, calcium sulfate hemi-hydrate or combinations thereof, and placing the cement composition in the wellbore. A cement composition comprising water and a cementitious material, wherein the cementitious material further comprises blast furnace slag, vitrified shale, calcium sulfate hemi-hydrate or combinations thereof. A cement composition comprising water and a cementitious material, wherein the cementitious material further comprises blast furnace slag. | 01-10-2013 |
20130126166 | Calcium Phosphate Cement Compositions Comprising Pumice and/or Perlite and Associated Methods - Methods and compositions are provided that related to cementing operations. Methods and compositions that include pumice and/or perlite as a replacement for fly ash. | 05-23-2013 |
20130233550 | Set-Delayed Cement Compositions Comprising Pumice and Associated Methods - A variety of methods and compositions are disclosed, including, in one embodiment, a method of cementing in a subterranean formation, comprising: providing a set-delayed cement composition comprising water, pumice, hydrated lime, and a set retarder; activating the set-delayed cement composition; introducing the set-delayed cement composition into a subterranean formation; and allowing the set-delayed cement composition to set in the subterranean formation. | 09-12-2013 |
20130248183 | Cement Set Activators for Set-Delayed Cement Compositions and Associated Methods - Disclosed herein are cement compositions and methods of using set-delayed cement compositions in subterranean formations. A method of cementing in a subterranean formation, may comprise providing a set-delayed cement composition comprising water, pumice, hydrated lime, and a set retarder, activating the set-delayed cement composition with a cement set activator, wherein the cement set activator comprises at least one activator selected from the group consisting of nanosilica, a polyphosphate, and combinations thereof, introducing the set-delayed cement composition into a subterranean formation, and allowing the set-delayed cement composition to set in the subterranean formation. | 09-26-2013 |
20130255949 | Cement Compositions Comprising Lignite-Based Grafted Copolymers and Methods of Use - A variety of methods and compositions are disclosed, including, in one embodiment, a method of cementing in a subterranean formation comprising: introducing a cement composition comprising cement, water, and a lignite-based copolymer into a subterranean formation, wherein the lignite-based copolymer comprises a lignite backbone, a first grafted monomer selected from the group consisting of -acrylamido-2-methylpropanesulfonic acid, a salt of 2-acrylamido-2-methylpropanesulfonic acid, and a second grafted monomer comprising N,N-dimethylacrylamide; and allowing the cement composition to set in the subterranean formation, wherein cement composition has a transition time of less than or equal to about 150 minutes. | 10-03-2013 |
20150107490 | Calcium Phosphate Cement Compositions Comprising Pumice and/or Perlite and Associated Methods - Methods and compositions are provided that related to cementing operations. Methods and compositions that include pumice and/or perlite as a replacement for fly ash. | 04-23-2015 |
20160075933 | Cement Set Activators For Set-Delayed Cement Compositions and Associated Methods - Disclosed herein are cement compositions and methods of using set-delayed cement compositions in subterranean formations. A method of cementing in a subterranean formation, may comprise providing a set-delayed cement composition comprising water, pumice, hydrated lime, and a set retarder, activating the set-delayed cement composition with a cement set activator, wherein the cement set activator comprises at least one activator selected from the group consisting of nanosilica, a polyphosphate, and combinations thereof, introducing the set-delayed cement composition into a subterranean formation, and allowing the set-delayed cement composition to set in the subterranean formation. | 03-17-2016 |
Patent application number | Description | Published |
20090308616 | Method and Apparatus for a Monodiameter Wellbore, Monodiameter Casing, Monobore, and/or Monowell - An assembly and methods for constructing a MONOWELL include a monodiameter casing disposed in a monodiameter wellbore having diametric efficiency with a monobore production delivery system disposed within the monodiameter casing. An assembly for constructing a monodiameter wellbore includes a bottomhole assembly having a overgauge hole drilling member, a directional steering assembly, a measurement while drilling tool, and a logging while drilling tool; a work string attached to the bottomhole assembly and extending to the surface; drilling fluids flowing through the work string and bottomhole assembly; chemical casing casing the borehole; expandable casing disposed in the wellbore; and a sealing composition disposed between the expandable casing and the wellbore. | 12-17-2009 |
20140020895 | Foaming of Set-Delayed Cement Compositions Comprising Pumice and Hydrated Lime - A variety of methods and compositions are disclosed, including, in one embodiment a method a cementing in a subterranean formation comprising: providing a set-delayed cement composition comprising water, pumice, hydrated lime, and a set retarder; foaming the set-delayed cement composition; activating the set-delayed cement composition; introducing the set-delayed cement composition into a subterranean formation; and allowing the set-delayed cement composition to set in the subterranean formation. Additional methods, foamed set-delayed cement composition, and systems for cementing are also provided. | 01-23-2014 |
20140034313 | Cement Set Activators for Cement Compositions and Associated Methods - Disclosed herein are cement compositions and methods of using cement compositions in subterranean formations. An embodiment comprises a method of cementing in a subterranean formation comprising: providing a cement composition comprising water, a pozzolan, hydrated lime, and a zeolite activator; introducing the cement composition into a subterranean formation; and allowing the cement composition to set in the subterranean formation, wherein the zeolite activator accelerates compressive strength development of the cement composition. | 02-06-2014 |
20140034314 | Mitigation of Contamination Effects in Set-Delayed Cement Compositions Comprising Pumice and Hydrated Lime - Methods and compositions for cementing are disclosed. Embodiments include a method of cementing comprising: providing a set-delayed cement composition comprising water, pumice, hydrated lime, a primary set retarder, a secondary set retarder; activating the set-delayed cement composition to produce an activated cement composition; introducing the activated cement composition into a subterranean formation; and allowing the activated cement composition to set in the subterranean formation. | 02-06-2014 |
20140048267 | Two-Part Set-Delayed Cement Compositions - A variety of methods and compositions are disclosed, including, in one embodiment a method of cementing comprising: providing a pozzolan slurry comprising a pozzolan and water; providing a lime slurry comprising hydrated lime and water; allowing the pozzolan slurry and the lime slurry to remain separate for about one day or longer; mixing the pozzolan slurry and the lime slurry to form a cement composition; and allowing the cement composition to set. | 02-20-2014 |
20140083701 | Cement Set Activators for Set-Delayed Cement Compositions and Associated Methods - Disclosed herein are cement compositions and methods of using set-delayed cement compositions in subterranean formations. In one embodiment, a method of cementing in a subterranean formation is described. The method may comprise providing a set-delayed cement composition comprising water, pumice, hydrated lime, and a set retarder; activating the set-delayed cement composition with a liquid additive to produce an activated cement composition, wherein the liquid additive comprises a monovalent salt, a polyphosphate, a dispersant, and water; and allowing the activated cement composition to set. | 03-27-2014 |
20140090843 | Use of Synthetic Smectite in Set-Delayed Cement Compositions - Disclosed herein are cement compositions and methods of using set-delayed cement compositions in subterranean formations. In one embodiment a method of cementing in a subterranean formation is described. The method comprises providing a set-delayed cement composition comprising pumice, hydrated lime, a cement set retarder, a synthetic smectite, and water; introducing the set-delayed cement composition into a subterranean formation; and allowing the set-delayed cement composition to set in the subterranean formation. | 04-03-2014 |
20140174741 | Settable Compositions and Methods of Use - Disclosed herein are settable compositions and methods of using settable compositions in a wellbore. In one embodiment a method of introducing a settable composition into a wellbore is described. The method comprises providing a settable composition comprising pumice, hydrated lime, a set retarder, and water. Introducing the settable composition into a wellbore. Allowing the settable composition to remain static in the wellbore, wherein the settable composition remains in a pumpable fluid state for a period of about 1 day or longer while static in the wellbore. | 06-26-2014 |
20140190696 | Lost Circulation Treatment Fluids Comprising Pumice and Associated Methods - Disclosed are lost circulation treatment fluids and methods of sealing lost circulation zones. Embodiments include a method of sealing a lost circulation zone. The method comprises circulating a lost circulation treatment fluid in a wellbore, wherein the lost circulation treatment fluid comprises: pumice, hydrated lime, a set retarder, and water; and allowing the lost circulation treatment fluid to set in the lost circulation zone to seal the lost circulation zone. | 07-10-2014 |
20140202698 | Set-Delayed Cement Compositions Comprising Pumice and Associated Methods - Disclosed herein are cement compositions and methods of using set-delayed cement compositions in subterranean formations. An embodiment includes a method of cementing in a subterranean formation comprising: providing a cement composition comprising water, pumice, hydrated lime, a set retarder, and a strength enhancer, wherein the strength enhancer comprises at least one material selected from the group consisting of cement kiln dust, slag, amorphous silica, a pozzolan, and any combination thereof; introducing the cement composition into the subterranean formation; and allowing the cement composition to set in the subterranean formation. | 07-24-2014 |
20140216746 | Plugging and Abandoning a Well Using a Set-Delayed Cement Composition Comprising Pumice - Disclosed herein are cement compositions and methods of using set-delayed cement compositions in subterranean formations. In one embodiment a method of plugging a wellbore is described. The method comprises providing a set-delayed cement composition comprising pumice, hydrated lime, a cement set retarder, and water; activating the set-delayed cement composition to produce an activated set-delayed cement composition; introducing the activated set-delayed cement composition into the wellbore; and allowing the activated set-delayed cement composition to form a plug in the wellbore that has a permeability of less than 0.1 millidarcy. | 08-07-2014 |
20140373756 | Set-Delayed Cement Compositions Comprising Pumice and Associated Methods - A variety of methods and compositions are disclosed, including, in one embodiment, a method of cementing in a subterranean formation, comprising: providing a set-delayed cement composition comprising water, pumice, hydrated lime, and a set retarder; activating the set-delayed cement composition; introducing the set-delayed cement composition into a subterranean formation; and allowing the set-delayed cement composition to set in the subterranean formation. | 12-25-2014 |
20140374098 | Set-Delayed Cement Compositions Comprising Pumice and Associated Methods - A variety of methods and compositions are disclosed, including, in one embodiment, a method of cementing in a subterranean formation, comprising: providing a set-delayed cement composition comprising water, pumice, hydrated lime, and a set retarder; activating the set-delayed cement composition; introducing the set-delayed cement composition into a subterranean formation; and allowing the set-delayed cement composition to set in the subterranean formation. | 12-25-2014 |
Patent application number | Description | Published |
20080269408 | Aqueous Polymerization of Fluorinated Monomer Using Polymerization Agent Comprising Fluoropolyether Acid or Salt and Short Chain Fluorosurfactant - A process comprising polymerizing at least one fluorinated monomer in an aqueous medium containing initiator and polymerization agent to form an aqueous dispersion of particles of fluoropolymer, the polymerization agent comprising: fluoropolyether acid or salt thereof having a number average molecular weight of at least about 800 g/mol; and fluorosurfactant having the formula:
| 10-30-2008 |
20090281241 | Aqueous Polymerization of Fluorinated Monomer Using a Mixture of Fluoropolyether Acids or Salts - A composition comprising a mixture of fluoropolyether acids or salts having a number average value of about 800 to about 2500 g/mol. The amount of fluoropolyether acids or salt in the mixture having a molecular weight of not more than 500 g/mol is not more than 50 ppm by weight of the total amount of fluoropolyether acids or salts in the mixture. The amount of fluoropolyether acids or salts in the mixture having a molecular weight of 2500 g/mol or greater is not more than 40% by weight of the total amount of fluoropolyether acids or salts in the mixture. Preferably the fluoropolyether acids or salts comprise an anionic group selected from the group consisting of carboxylate, sulfonate, sulfonamide anion and phosphonate. Also disclosed is an aqueous dispersion polymerization process for fluoropolymer manufacture employing polymerization agent comprising the specified mixture of fluoropolyether acids or salts. | 11-12-2009 |
20090281261 | Abatement of Fluoroether Carboxylic Acids or Salts Employed in Fluoropolymer Resin Manufacture - A process for making fluoropolymer resin comprising polymerizing at least one fluorinated monomer in an aqueous medium containing initiator and polymerization agent comprising fluoroether carboxylic acid or salt thereof to form an aqueous dispersion of particles of fluoropolymer. The fluoroether carboxylic acid or salt thereof employed in the process has the formula: | 11-12-2009 |
20100034919 | Melt Processible Semicrystalline Fluoropolymer having Repeating Units Arising from Tetrafluoroethylene, Hexafluoropropylene, and Hydrocarbon Monomer Having a Carboxyl Group and a Polymerizable Carbon-Carbon Double Bond and Multi-Layer Articles Comprising a Layer of the Melt Processible Semicrystalline Fluoropolymer - Disclosed is a melt processible semicrystalline fluoropolymer comprising: (a) about 2 to about 20 weight percent of repeating units arising from hexafluoropropylene; (b) about 0.001 to about 1 weight percent of repeating units arising from a hydrocarbon monomer having a carboxyl group and a polymerizable carbon-carbon double bond; and (c) the remaining weight percent of repeating units arising from tetrafluoroethylene. This melt processible semicrystalline fluoropolymer is impermeable to fuels and is useful as a lining for petroleum fuel tubing, as well as chemical resistance coating for, or adhesive between, perfluoropolymer and other polymers, metals and inorganics. | 02-11-2010 |
20100152363 | Aqueous Polymerization of Fluorinated Monomer Using Polymerization Agent Comprising Fluoropolyether Acid or Salt and Short Chain Fluorosurfactant - A process comprising polymerizing at least one fluorinated monomer in an aqueous medium containing initiator and polymerization agent to form an aqueous dispersion of particles of fluoropolymer, the polymerization agent comprising:
| 06-17-2010 |
20100152378 | Aqueous Polymerization of Fluorinated Monomer Using Polymerization Agent Comprising Fluoropolyether Acid or Salt and Short Chain Fluorosurfactant - A process comprising polymerizing at least one fluorinated monomer in an aqueous medium containing initiator and polymerization agent to form an aqueous dispersion of particles of fluoropolymer, the polymerization agent comprising:
| 06-17-2010 |
20100152379 | Aqueous Polymerization of Fluorinated Monomer Using Polymerization Agent Comprising Fluoropolyether Acid or Salt and Short Chain Fluorosurfactant - A process comprising polymerizing at least one fluorinated monomer in an aqueous medium containing initiator and polymerization agent to form an aqueous dispersion of particles of fluoropolymer, the polymerization agent comprising:
| 06-17-2010 |
20120004365 | Aqueous Polymerization of Fluorinated Monomer Using a Mixture of Fluoropolyether Acids or Salts - A composition comprising a mixture of fluoropolyether acids or salts having a number average value of about 800 to about 2500 g/mol. The amount of fluoropolyether acids or salt in the mixture having a molecular weight of not more than 500 g/mol is not more than 50 ppm by weight of the total amount of fluoropolyether acids or salts in the mixture. The amount of fluoropolyether acids or salts in the mixture having a molecular weight of 2500 g/mol or greater is not more than 40% by weight of the total amount of fluoropolyether acids or salts in the mixture. Preferably the fluoropolyether acids or salts comprise an anionic group selected from the group consisting of carboxylate, sulfonate, sulfonamide anion and phosphonate. Also disclosed is an aqueous dispersion polymerization process for fluoropolymer manufacture employing polymerization agent comprising the specified mixture of fluoropolyether acids or salts. | 01-05-2012 |
20120077931 | AQUEOUS POLYMERIZATION OF FLUORINATED MONOMER USING POLYMERIZATION AGENT COMPRISING FLUOROPOLYETHER ACID OR SALT AND SHORT CHAIN FLUOROSURFACTANT - A process comprising polymerizing at least one fluorinated monomer in an aqueous medium containing initiator and polymerization agent to form an aqueous dispersion of particles of fluoropolymer, the polymerization agent comprising:
| 03-29-2012 |
20120116003 | Aqueous Polymerization of Perfluoromonomer Using Hydrocarbon Surfactant - A process is provided for the polymerization of fluoromonomer to an dispersion of fluoropolymer particles in an aqueous medium in a polymerization reactor, by (a) providing the aqueous medium in the reactor, (b) adding the fluoromonomer to the reactor, (c) adding initiator to the aqueous medium, the combination of steps (b) and (c) being carried out essentially free of hydrocarbon-containing surfactant and resulting in the kickoff of the polymerization of the fluoromonomer, and (d) metering hydrocarbon-containing surfactant into the aqueous medium after the kickoff of polymerization, e.g. after the concentration of the fluoropolymer in the aqueous medium is at least 0.6 wt %, the metering being at a rate reducing the telogenic activity of said surfactant while maintaining surface activity. | 05-10-2012 |
20120116015 | Reducing the Telogenic Behavior of Hydrocarbon-Containing Surfactants in Aqueous Dispersion Fluoromonomer Polymerization - A polymerization process is provided, comprising polymerizing fluoromonomer in an aqueous medium to form a dispersion of fluoropolymer particles in the aqueous medium, said polymerizing being carried out in the presence of (i) polymerization initiator, and (ii) hydrocarbon-containing surfactant stabilizing the dispersion of fluoropolymer particles, the hydrocarbon-containing surfactant being passivated to reduce its the telogenic behavior. | 05-10-2012 |
20120116017 | Nucleation in Aqueous Polymerization of Fluoromonomer - A process is provided for polymerizing fluoromonomer in an aqueous medium, wherein a dispersion of essentially surfactant-free hydrocarbon-containing oleophilic nucleation sites is first formed in the aqueous medium, and then polymerization is commenced to form a dispersion of fluoropolymer particles at the oleophilic nucleation sites, wherein the nucleation sites can be derived from hydrocarbon-containing compound. The surfactant used to stabilize the fluoropolymer dispersion can also be hydrocarbon-containing. | 05-10-2012 |
20130217849 | AQUEOUS POLYMERIZATION OF FLUORINATED MONOMER USING A MIXTURE OF FLUOROPOLYETHER ACIDS OR SALTS - A composition comprising a mixture of fluoropolyether acids or salts having a number average value of about 800 to about 2500 g/mol. The amount of fluoropolyether acids or salt in the mixture having a molecular weight of not more than 500 g/mol is not more than 50 ppm by weight of the total amount of fluoropolyether acids or salts in the mixture. The amount of fluoropolyether acids or salts in the mixture having a molecular weight of 2500 g/mol or greater is not more than 40% by weight of the total amount of fluoropolyether acids or salts in the mixture. Preferably the fluoropolyether acids or salts comprise an anionic group selected from the group consisting of carboxylate, sulfonate, sulfonamide anion and phosphonate. Also disclosed is an aqueous dispersion polymerization process for fluoropolymer manufacture employing polymerization agent comprising the specified mixture of fluoropolyether acids or salts. | 08-22-2013 |
20130303650 | FLUOROPOLYMER DISPERSION TREATMENT EMPLOYING ULTRAVIOLET LIGHT AND OXYGEN SOURCE TO REDUCE FLUOROPOLYMER RESIN DISCOLORATION - Process for reducing thermally induced discoloration of fluoropolymer resin produced by polymerizing fluoromonomer in an aqueous dispersion medium to form aqueous fluoropolymer dispersion and isolating said fluoropolymer from said aqueous medium to obtain said fluoropolymer resin. The process comprises:
| 11-14-2013 |
20130303652 | Fluoropolymer Dispersion Treatment Employing Light and Oxygen Source in Presence of Photocatalyst to Reduce Fluoropolymer Resin Discoloration - Process for reducing thermally induced discoloration of fluoropolymer resin produced by polymerizing fluoromonomer in an aqueous dispersion medium to form aqueous fluoropolymer dispersion and isolating said fluoropolymer from said aqueous medium to obtain said fluoropolymer resin. The process comprises:
| 11-14-2013 |
20130303701 | Employing Pretreatment and Fluorination of Fluoropolymer Resin to Reduce Discoloration - Process for reducing thermally induced discoloration of fluoropolymer resin produced by polymerizing fluoromonomer in an aqueous dispersion medium to form aqueous fluoropolymer dispersion and isolating said fluoropolymer from the aqueous medium by separating fluoropolymer resin in wet form from the aqueous medium and drying to produce fluoropolymer resin in dry form. The process comprises:
| 11-14-2013 |
20130303707 | Fluorination of Fluoropolymer Resin to Reduce Discoloration - Process for reducing thermally induced discoloration of fluoropolymer resin produced by polymerizing fluoromonomer in an aqueous medium to form aqueous fluoropolymer dispersion and isolating said fluoropolymer from said aqueous medium to obtain said fluoropolymer resin. The process comprises:
| 11-14-2013 |
20130303708 | Fluoropolymer Dispersion Treatment Employing Hypochlorite Salts or Nitrite Salts to Reduce Fluoropolymer Resin Discoloration - Process for reducing thermally induced discoloration of fluoropolymer resin produced by polymerizing fluoromonomer in an aqueous dispersion medium to form aqueous fluoropolymer dispersion and isolating said fluoropolymer from said aqueous medium to obtain said fluoropolymer resin. The process comprises:
| 11-14-2013 |
20130303709 | Fluoropolymer Dispersion Treatment Employing High pH and Oxygen Source to Reduce Fluoropolymer Resin Discoloration - Process for reducing thermally induced discoloration of fluoropolymer resin produced by polymerizing fluoromonomer in an aqueous dispersion medium to form aqueous fluoropolymer dispersion and isolating said fluoropolymer from said aqueous medium to obtain said fluoropolymer resin. The process comprises:
| 11-14-2013 |
20130303710 | Fluoropolymer Dispersion Treatment Employing Hydrogen Peroxide to Reduce Fluoropolymer Resin Discoloration - Process for reducing thermally induced discoloration of fluoropolymer resin produced by polymerizing fluoromonomer in an aqueous dispersion medium to form aqueous fluoropolymer dispersion and isolating said fluoropolymer from said aqueous medium to obtain said fluoropolymer resin. The process comprises:
| 11-14-2013 |
20130303715 | Fluoropolymer Resin Treatment Employing Heating and Oxygen Source to Reduce Discoloration - Process for reducing thermally induced discoloration of fluoropolymer resin produced by polymerizing fluoromonomer in an aqueous medium to form aqueous fluoropolymer dispersion and isolating said fluoropolymer from said aqueous medium to obtain said fluoropolymer resin. The process comprises:
| 11-14-2013 |
20130303716 | Drying Wet Fluoropolymer Resin and Exposing to Oxygen Source to Reduce Discoloration - Process for reducing thermally induced discoloration of fluoropolymer resin produced by polymerizing fluoromonomer in an aqueous dispersion medium to form aqueous fluoropolymer dispersion and isolating fluoropolymer from said aqueous medium by separating wet fluoropolymer resin from the aqueous medium and drying to produce fluoropolymer resin. The process comprises:
| 11-14-2013 |
20130303717 | Fluoropolymer Dispersion Treatment Employing Oxidizing Agent to Reduce Fluoropolymer Resin Discoloration - A process for reducing thermally induced discoloration of fluoropolymer resin produced by polymerizing fluoromonomer in an aqueous dispersion medium to form aqueous fluoropolymer dispersion and isolating said fluoropolymer from the aqueous medium to obtain the fluoropolymer resin. The process comprises:
| 11-14-2013 |
20130303718 | Fluoropolymer Dispersion Treatment Employing Oxidizing Agent to Reduce Fluoropolymer Resin Discoloration - A process for reducing thermally induced discoloration of fluoropolymer resin produced by polymerizing fluoromonomer in an aqueous dispersion medium to form aqueous fluoropolymer dispersion and isolating said fluoropolymer from the aqueous medium to obtain the fluoropolymer resin. The process comprises:
| 11-14-2013 |
20130331516 | AQUEOUS POLYMERIZATION OF FLUORINATED MONOMER USING POLYMERIZATION AGENT COMPRISING FLUOROPOLYETHER ACID OR SALT AND SHORT CHAIN FLUOROSURFACTANT - A process comprising polymerizing at least one fluorinated monomer in an aqueous medium containing initiator and polymerization agent to form an aqueous dispersion of particles of fluoropolymer, the polymerization agent comprising:
| 12-12-2013 |
20130345368 | Fluoropolymer Resin Treatment Employing Melt Extrusion and Exposure to Oxygen Source to Reduce Discoloration - Process for reducing thermally induced discoloration of melt-processible fluoropolymer resin produced by polymerizing fluoromonomer in an aqueous medium to form aqueous fluoropolymer dispersion and isolating said fluoropolymer from said aqueous medium to obtain said fluoropolymer resin. The process comprises:
| 12-26-2013 |
20140018499 | Nucleation in Aqueous Polymerization of Fluoromonomer - A process is provided for polymerizing fluoromonomer in an aqueous medium, wherein a dispersion of essentially surfactant-free hydrocarbon-containing oleophilic nucleation sites is first formed in the aqueous medium, and then polymerization is commenced to form a dispersion of fluoropolymer particles at the oleophilic nucleation sites, wherein the nucleation sites can be derived from hydrocarbon-containing compound. The surfactant used to stabilize the fluoropolymer dispersion can also be hydrocarbon-containing. | 01-16-2014 |
20140256895 | FLUOROPOLYMER RESIN TREATMENT EMPLOYING SORBENT TO REDUCE FLUOROPOLYMER RESIN DISCOLORATION - A process for reducing thermally induced discoloration of fluoropolymer resin produced by polymerizing fluoromonomer in an aqueous dispersion medium to form aqueous fluoropolymer dispersion and isolating the fluoropolymer from the aqueous medium to obtain fluoropolymer resin. The process comprises:
| 09-11-2014 |
20150141581 | Fluoropolymer Resin Treatment Employing Oxidizing Agent to Reduce Discoloration - Process for reducing thermally induced discoloration of fluoropolymer resin produced by polymerizing fluoromonomer in an aqueous dispersion medium to form aqueous fluoropolymer dispersion and isolating the fluoropolymer from the aqueous medium by separating fluoropolymer resin in wet form from the aqueous medium and drying to produce fluoropolymer resin in dry form. The process comprises:
| 05-21-2015 |
20150148481 | EMPLOYING POLYALKYLENE OXIDES FOR NUCLEATION IN AQUEOUS POLYMERIZATION OF FLUOROMONOMER - Process for polymerizing fluoromonomer to form an aqueous dispersion of fluoropolymer particles including: (a) providing an aqueous medium in a polymerization reactor, (b) adding nucleating additive comprising polyalkylene oxide having a number average molecular weight of about 50 to about 2000 to the aqueous medium in an amount of about 0.1 ppm to about 50 ppm based on water in the aqueous medium, (c) exposing the nucleating additive to oxidizing agent to form a dispersion of oleophilic nucleation sites in the aqueous medium; (d) pressurizing the reactor by adding fluoromonomer, and (e) adding polymerization initiator to the aqueous medium to cause the polymerizing of the fluoromonomer to form fluoropolymer particles dispersed in the aqueous medium. | 05-28-2015 |
20150159004 | AQUEOUS POLYMERIZATION OF FLUORINATED MONOMER USING A MIXTURE OF FLUOROPOLYETHER ACIDS OR SALTS - A composition comprising a mixture of fluoropolyether acids or salts having a number average value of about 800 to about 2500 g/mol. The amount of fluoropolyether acids or salt in the mixture having a molecular weight of not more than 500 g/mol is not more than 50 ppm by weight of the total amount of fluoropolyether acids or salts in the mixture. The amount of fluoropolyether acids or salts in the mixture having a molecular weight of 2500 g/mol or greater is not more than 40% by weight of the total amount of fluoropolyether acids or salts in the mixture. Preferably the fluoropolyether acids or salts comprise an anionic group selected from the group consisting of carboxylate, sulfonate, sulfonamide anion and phosphonate. Also disclosed is an aqueous dispersion polymerization process for fluoropolymer manufacture employing polymerization agent comprising the specified mixture of fluoropolyether acids or salts. | 06-11-2015 |
20150203427 | ABATEMENT OF FLUOROETHER CARBOXYLIC ACIDS OR SALTS EMPLOYED IN FLUOROPOLYMER RESIN MANUFACTURE - A process for making fluoropolymer resin comprising polymerizing at least one fluorinated monomer in an aqueous medium containing initiator and polymerization agent comprising fluoroether carboxylic acid or salt thereof to form an aqueous dispersion of particles of fluoropolymer. The fluoroether carboxylic acid or salt thereof employed in the process has the formula: | 07-23-2015 |
20150344592 | FLUOROPOLYMER DISPERSION TREATMENT EMPLOYING OXIDIZING AGENT TO REDUCE FLUOROPOLYMER RESIN DISCOLORATION - A process for reducing thermally induced discoloration of fluoropolymer resin produced by polymerizing fluoromonomer in an aqueous dispersion medium to form aqueous fluoropolymer dispersion and isolating said fluoropolymer from the aqueous medium to obtain the fluoropolymer resin. The process comprises exposing the aqueous fluoropolymer dispersion to oxidizing agent. | 12-03-2015 |