| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 526126000 |
Material contains silicon atom
| 172 |
| 526170000 |
Transition metal bonded to carbon atom
| 123 |
| 526123100 |
Material contains compound of Group IA (Li, Na, K, Rb, Cs, Fr) or Group IIA (Be, Mg, Ca, Sr, Ba, Ra) metal wherein IA or IIA metal is not bonded to hydrogen or to carbon
| 119 |
| 526159000 |
Material contains non-transition elemental metal, hydride thereof, or carbon to non-transition metal atom bond
| 59 |
| 526131000 |
Material contains boron atom
| 59 |
| 526172000 |
Transition metal compound has at least one atom of P, S, N or O therein
| 55 |
| 526135000 |
With non-metal N, P, O, S, Se, Te, or halogen material other than nitrogen gas
| 51 |
| 526113000 |
Two or more diverse transition metal atoms in distinct compounds or in the same compound
| 50 |
| 526095000 |
Material contains transition metal oxide (other than peroxide)
| 38 |
| 526118000 |
Material contains two or more different compounds of same transition metal
| 21 |
| 526108000 |
Contains one or more elemental transition metal atoms
| 17 |
| 526154000 |
Material contains aluminum compound wherein aluminum atom is not bonded to hydrogen or carbon atom
| 16 |
| 526120000 |
Material contains compound of non-transition heavy metal wherein non-transition heavy metal is not bonded to hydrogen or carbon
| 10 |
| 526148000 |
Contains two or more diverse non-transition elemental metals, different non-transition hydride compounds, different carbon to non transition metal compounds, or mixture thereof
| 7 |
| 526091000 |
In presence of water | 5 |
| 20120296055 | HIGH-CIS POLYBUTADIENE RUBBER IN BENIGN SOLVENTS AND PROCESS FOR PREPARATION THEREOF - Disclosed is an improved process for production of relatively gel free high cis-1,4-polybutadiene by polymerizing 1,3-butadiene monomer in presence of organocobalt-alkyl aluminum catalysts and a cycloalkane solvent system, the improvement comprising conducting said process in a predetermined sequence avoiding alkyl or alkoxy substituted benzene as polymerization regulator. | 11-22-2012 |
| 20120142872 | PROCESS FOR POLYMERISING (HETERO)AROMATIC COMPOUNDS - The present invention relates to a process for polymerising (hetero)aromatic compounds under formation of aryl-aryl C—C couplings for preparing conjugated polymers with high molecular weight and high regioregularity, and to novel polymers obtainable by this process. The invention further relates to the use of the novel polymers as semiconductors or charge transport materials in optical, electrooptical or electronic devices including field effect transistors (FETs), thin film transistors (TFT), electroluminescent, photovoltaic and sensor devices. | 06-07-2012 |
| 20110105703 | PROCESS FOR PRODUCTION OF POLYMERS WITH IRON COMPLEX CATALYST - The invention relates to a novel iron complex bearing a cyclic amine as ligand; and a process for the production of polymers by polymerizing a radical-polymerizable monomer in the presence of the iron complex and a radical generator. The invention aims at providing a process by which a polymer having a chemically convertible functional group at the end can be produced from a radical-polymerizable monomer and which permits the production of a block copolymer and a process for recovering, after polymerization, an iron complex into a solvent at a high recovery ratio. The aim can be solved by providing a novel iron complex, a process for producing a polymer in the presence of a radical polymerization initiator by using the iron complex as the polymerization catalyst, a process for the production of a block copolymer which is subsequent to the polymerization for producing the above polymer, and a process for recovering the iron complex easily and simply. The invention provides an iron complex useful in producing a polymer by polymerizing a radical-polymerizable monomer; and a process for the production of polymers with the iron catalyst. | 05-05-2011 |
| 20090227746 | Processes for producing a catalyst component for addition polymerization, a catalyst and an addition polymer - A production process of a polymerization catalyst component includes contacting compound (a) such as diethyl zinc represented by the defined formula [1], a compound (b) such as pentafluorophenol, represented by the defined formula [2], a compound (c) such as water, represented by the defined formula [3], and particles (d), such as silica, with one another in a hydrocarbon solvent under an agitator power of 0.05 kW/m | 09-10-2009 |
| 20090143548 | Method for producing polybutadiene - A method for producing a polybutadiene, which comprises subjecting 1,3-butadiene to cis-1,4 polymerization, and subsequently subjecting a resultant in the resulting polymerization system to syndiotactic-1,2 polymerization, the method being characterized in that there is added, after the polymerization, a halogen acid or halogen acid salt. | 06-04-2009 |
| Entries |
| Document | Title | Date |
|---|
| 20110196116 | POLYMERIZATION PROCESSES FOR BROADENED MOLECULAR WEIGHT DISTRIBUTION - Provided are methods of producing polymers with broadened molecular weight and/or composition distribution in a continuous homogeneous polymerization system utilizing reactor temperature gradients, reactor polymer concentration gradients, monomer concentration gradients, catalyst concentration gradients, and combinations thereof in the polymerization reactor. Such methods are particularly suitable when utilizing metallocene catalysts and other single-site catalysts, which generally produce polymers with narrow molecular weight and composition distribution. | 08-11-2011 |
| 20110196115 | POLYMERIZATION PROCESSES FOR BROADENED MOLECULAR WEIGHT DISTRIBUTION - Provided are methods of producing polymers with broadened molecular weight and/or composition distribution in a continuous homogeneous polymerization system utilizing reactor temperature gradients, reactor polymer concentration gradients, monomer concentration gradients, catalyst concentration gradients, and combinations thereof in the polymerization reactor. Such methods are particularly suitable when utilizing metallocene catalysts and other single-site catalysts, which generally produce polymers with narrow molecular weight and composition distribution. | 08-11-2011 |
| 20090312505 | Polymerization Process with catalyst reactivation - Polymerization processes of the present invention comprise low catalyst concentration. Embodiments include a polymerization process comprising polymerizing free radically (co)polymerizable monomers in a polymerization medium comprising one or more radically (co)polymerizable monomers, a transition metal catalyst complex capable of participating in a one electron redox reaction with an ATRP initiator; a free radical initiator; and an ATRP initiator; (wherein the concentration of transition metal catalyst complex in the polymerization medium is less than 100 ppm). Further embodiments include a polymerization process, comprising polymerizing one or more radically (co)polymerizable monomers in the presence of at least one transition metal catalyst complex; and an ATRP initiator; and a reducing agent; wherein the transition metal catalyst complex is present at less than 10″3 mole compared to the moles of radically transferable atoms or groups present on the ATRP initiator. | 12-17-2009 |
| 20090156760 | Transforming process - A method of preparing a thermoformed article which is relatively isotropic in terms of shrinkage of the final thermoformed article along the sheet extrusion flow path (the longitudinal direction) and the transverse direction. The article is prepared from an isotactic polypropylene produced by the polymerization of propylene with an isospecific metallocene catalyst. The polymer has a melt flow rate within the range of 1-5 grams/10 minutes and a melting temperature of no more than 160° C. The polypropylene is extruded to provide a sheet which is oriented in at least one direction and has a thickness of 10-100 mils. The sheet is heated to a temperature of 135-160° C, and thermoformed in contact with a template having the desired configuration to produce the thermoformed article. The thermoformed article is then cooled and retrieved from the template to arrive at the final product. | 06-18-2009 |
| 20130046068 | METHOD FOR PREPARING SUPPORTED METALLOCENE CATALYST AND METHOD FOR PREPARING POLYOLEFIN USING THE SAME - The present invention relates to a method for preparing a supported metallocene catalyst, and a method for preparing polyolefin using the same, in which the supported metallocene catalyst prepared from the simple process according to the method for preparing the supported metallocene catalyst of the present invention can apply to the polymerization of the polyolefin that is polymerized at low pressure or high pressure; the molecular weight distribution of polyolefin prepared can be easily controlled; and there are effects such that its catalyst activity is significantly higher than that of the existed supported metallocene catalyst, and the molecular weight distribution can be easily controlled. | 02-21-2013 |
| 20130096268 | MONODISPERSE POLYMERS CONTAINING (ALKYL)ACRYLIC ACID MOIETIES, PRECURSORS AND METHODS FOR MAKING THEM AND THEIR APPLICATIONS - This invention relates to monodisperse or nearly monodisperse (co)polymers containing acrylic or (α-substituted)acrylic acid moieties, polymeric precursors thereof as well as methods for making them by at least partial hydrolysis of said polymeric precursors. The invention also relates to compositions comprising such (co)polymers optionally in combination with polymer processing additives for use in various fields of technology including imaging applications. | 04-18-2013 |
| 20090018289 | PROCESS FOR PRODUCTION OF HIGH-ISOPRENE BUTYL RUBBER - The present invention relates to a continuous process for producing polymers at conversions ranging from 50% to 95% having a Mooney viscosity of at least 25 Mooney-units and a gel content of less than 15 wt. % containing repeating units derived from at least one isoolefin monomer, more than 4.1 mol % of repeating units derived from at least one multiolefin monomer and optionally further copolymerizable monomers in the presence of AlCl | 01-15-2009 |
| 20080214752 | Method for Producing Stabilized Polymer - A method for producing a stabilized polymer comprising adding at least one kind of a phenolic antioxidant masked with an organic aluminum and represented by general formula (I) in a catalyst system or a polymerization system, before or during polymerization, on gas-phase polymerization of a monomer having an ethylenic unsaturated bonding, | 09-04-2008 |
| 20110028665 | POLYMER - A multimodal linear low density polyethylene polymer having a final density of 900 to 940 kg/m | 02-03-2011 |
| 20080200624 | PROCESS FOR PREPARING POLYMERS - A process for preparing polymers, e.g., conjugated polymers, illustratively by a biphasic Suzuki reaction. The process involves reacting monomers having two reactive groups selected from boronic acid, C | 08-21-2008 |
| 20110201768 | SYSTEM AND METHOD FOR CATALYST ACTIVATION - A system and method for activating chromium catalyst, including: increasing temperature of a chromium catalyst at a first rate for a first period of time to a first temperature; and increasing temperature of the chromium catalyst at a second rate for a second period of time from the first temperature to a second temperature, wherein the first rate is greater than the second rate, and wherein the first period precedes the second period. | 08-18-2011 |
| 20100121005 | PHOTOREACTIVE EXO-RICH NORBORNENE POLYMER AND METHOD FOR PREPARING THE SAME - The present invention relates to a norbornene polymer that comprises a norbornene monomer having a photoreactive functional group, and a method of manufacturing the same. The norbornene polymer comprises at least 50 mol % of exo isomers among the norbornene monomers having the photoreactive functional group. Since the norbornene polymer according to the present invention comprises at least 50 mol % of exo isomers among the norbornene monomers having the photoreactive functional group, a molecular weight is significantly increased while the yield is not reduced during the manufacturing of the polymer. In views of the three dimensional structure, stability is ensured because the polymer has a planar structure in which the photoreactive groups between the molecules are close to each other. Therefore, the distance between the photoreactive groups is reduced, thus increasing the photoreaction rate. | 05-13-2010 |
| 20100121006 | POLYOLEFIN AND PREPARATION METHOD THEREOF - The present invention relates to a polyolefin that has high environmental stress cracking resistance (ESCR), a high impact property, and an excellent die swell property, and a method of preparing the same. According to the method of preparing polyolefin of the present invention, a supported hybrid metallocene catalyst and an alpha olefin comonomer having 4 or more carbon atoms are used to obtain polyolefin having the bimodal or multimodal molecular weight distribution curves during the single reactor polymerization. The polyolefin has excellent processability, a melt flow rate ratio (MFRR) that is useful to processing, excellent shapability, impact strength, tensile strength, in particular, environmental stress cracking resistance (ESCR) and full notch creep test (FNCT), thus being used to manufacture the blow molded product. | 05-13-2010 |
| 20120108768 | Continuous Catalyst Activator - Methods and systems for preparing catalyst, such as chromium catalysts, are provided. The valence of at least a portion of the catalyst sent to an activator is changed from Cr(III) to Cr(VI). The catalyst is prepared or activated continuously using a fluidization bed catalyst activator. | 05-03-2012 |
| 20080207853 | Precatalysts useful in polyolefin polymerization reactions - Compounds are provided that are useful as precatlysts in the polymerization of olefins such as ethylene and propylene. Other compounds are useful as intermediates in the production of such precatalysts. | 08-28-2008 |
| 20090281258 | Amine Promoter Blends For Peroxide-Initiated Curing Systems - Amine blend cure promoters comprising aromatic and tertiary alkyl amines are disclosed for promoting the cure of unsaturated polymer resins with a peroxide initiator, as well as methods for promoting the cure of such resins. | 11-12-2009 |
| 20080306226 | Polymerization Catalyst System Based on Monooxime Ligands - The present invention discloses active oligomerisation and polymerisation catalyst systems based on monooxime ligands. | 12-11-2008 |
| 20090264603 | Process for Producing Cyclic olefin Random Copolymer - A process for producing a cyclic olefin random copolymer by copolymerizing ethylene with a specific cyclic olefin in the presence of a polymerization catalyst containing a transition metal catalyst component and a co-catalyst component, wherein in the process for producing a cyclic olefin random copolymer, at least one component of the transition metal catalyst component and the co-catalyst component is brought into contact with the cyclic olefin, and then brought into contact with the ethylene. | 10-22-2009 |
| 20090030166 | Preparation of supported catalyst systems containing reduced amounts of aluminoxanes - The present invention relates to a process for preparing a catalyst solid for olefin polymerization, comprising a finely divided support, an aluminoxane and a metallocene compound, which comprises: a) firstly combining the finely divided support with the aluminoxane and subsequently b) adding the reaction product of a metallocene compound with at least one organometallic compound to the modified support, catalyst solids obtainable by this process, catalyst systems comprising these catalyst solids, their use for the polymerization of olefins and a process for the polymerization of olefins. | 01-29-2009 |
| 20090253872 | Acetylene-Based Polymer - An acetylene-based polymer, comprising n recurring units represented by the following Formula ( | 10-08-2009 |
| 20100144988 | Monomodal Copolymer of Ethylene for Injection Molding and Process for its Preparation - Monomodal copolymers of ethylene and molding compositions comprising such copolymers, wherein the copolymers have a density determined according to DIN EN ISO 1183-1, variant A in the range from 0.938 to 0.944 g/cm | 06-10-2010 |
| 20100210797 | Polyethylene Films having Improved Barrier Properties - Blown films and processes of forming the same are described herein. The blown films generally include high density polyethylene exhibiting a molecular weight distribution of from about 1.5 to about 8.0 and a density of from 0.94 g/cc to less than 0.96 g/cc. | 08-19-2010 |
| 20100197872 | Copolymer Comprising Alkene, Acrylate And Unsaturated Organic Acid, And Method For Preparing The Same - The present invention provides a copolymer that includes at least one alkene monomer, at least one acrylate monomer and at least one the unsaturated organic acid monomer having one or more double bonds, and a method of manufacturing the same. | 08-05-2010 |
| 20090318642 | Surface-Modified Polymerization Catalysts for the Preparation of Low-Gel Polyolefin Films - Use of a catalyst composition treated with a surface modifier in the polymerization of olefins for lowering the gel content in the resulting polyolefin, wherein the surface modifier has a polar residue capable of interacting with the surface of the catalyst composition and a lipophilic residue and is selected from carboxylate metal salts, nitrogen containing catalyst surface modifiers, phosphorus containing catalyst surface modifiers, oxygen containing catalyst surface modifiers, sulfur containing catalyst surface modifiers, fluoro containing polymeric catalyst surface modifiers or mixtures thereof and wherein the gel content is determined by using pressed plate gel analysis method. | 12-24-2009 |
| 20100331503 | PRODUCTION METHOD OF POLYOLEFIN, POLYOLEFIN AND 1-HEXENE FOR LINEAR LOW DENSITY POLYETHYLENE PRODUCTION RAW MATERIAL - The object of the present invention is to provide a production method for a polyolefin, in which catalyst activity is improved, and a polyolefin such as a linear low density polyethylene can advantageously be industrially produced. The present invention relates to a production method for a polyolefin, in which in producing a polyolefin by the polymerization reaction of an olefin using a catalyst, an organohalide is present in the reaction system in an amount of from 0.05 to 10 ppm by weight in terms of the halogen atom as a concentration in a raw material olefin, and 1-hexene for linear low density polyethylene production raw material, containing an organohalide in an amount of from 0.05 to 10 ppm by weight in terms of the halogen atom. | 12-30-2010 |
| 20110028666 | PROCESS AND APPARATUS FOR CONTINUOUSLY POLYMERIZING CATIONICALLY POLYMERIZABLE MONOMERS - The present invention relates to a process and to an apparatus for continuous living polymerization of cationically polymerizable monomers, in which at least three feedstocks are mixed in one or more mixers with microstructures and then polymerized in at least one reaction zone. | 02-03-2011 |
| 20110124830 | HYDROGENATED BETA-PINENE-BASED POLYMERS AND MOLDED ARTICLES COMPRISING THE SAME - The present invention provides hydrogenated β-pinene-based polymers with excellent heat resistance and light resistance, low absorptivity and high transparency, as well as molded articles thereof. The polymers of the present invention contain 50% by mass or more of β-pinene units and are hydrogenated β-pinene-based polymers where the ratio of the proton integral value at 6 to 8 ppm to the total proton integral value in a | 05-26-2011 |
| 20100216954 | Modified Thermoplastic Resin - [Problems] Thermoplastic resins have various problems such as enhancement in strength and improvement in toughness and heat resistance and copolymerization with monomers or oligomers and grafting have been carried out to solve the problems. Although graft polymerization with macromonomers has been carried out as a method for solving the problems, it is still expected to develop a modification technique for attaining better performance and resins produced by the technique. | 08-26-2010 |
| 20100240844 | Methods of Preparing a Polymerization Catalyst - A method comprising (a) contacting a support and a chromium-containing compound to form chromium-containing support, (b) heat treating the chromium-containing support in an oxidizing atmosphere to form a treated support, (c) contacting the treated support with carbon monoxide to form a CO-contacted support, and (d) contacting the CO-contacted support with hydrogen to form a catalyst. A method comprising oxidizing a chromium-treated support to form a polymerization catalyst, contacting the polymerization catalyst with carbon monoxide to form a reduced polymerization catalyst, contacting the reduced polymerization catalyst with hydrogen to form an activated polymerization catalyst, and contacting the activated polymerization catalyst with ethylene in a reaction zone under suitable reaction conditions to form a random copolymer. A method comprising reducing a polymerization catalyst comprising Cr(VI) to form a polymerization catalyst comprising Cr(II), and treating the polymerization catalyst comprising Cr(II) with hydrogen. | 09-23-2010 |
| 20080249262 | Copolymers and Films Thereof - Copolymers of ethylene and alpha-olefins having (a) a density in the range 0.900-0.940 g/cm | 10-09-2008 |
| 20110213105 | Control over controlled radical polymerization processes - A procedure for improved temperature control in controlled radical polymerization processes is disclosed. The procedure is directed at controlling the concentration of the persistent radical in ATRP and NMP polymerizations procedures and the concentration of radicals in a RAFT polymerization process by feeding a reducing agent or radical precursor continuously or intermittently to the reaction medium through one of more ports. | 09-01-2011 |
| 20080221284 | Metallocene Random Copolymers With Cool Temperature Impact Properties - A metallocene random copolymer of propylene and ethylene in which the ductile/brittle transition temperature of a molded article made from the copolymer may be in the range of from about 20° F. (−7° C.) to about 40° F. (4° C.). The haze level of the molded article may be less than about 10 percent for an 80-mil (0.2 cm) thick plaque. The metallocene random copolymer may further include a clarifier. | 09-11-2008 |
| 20080242810 | Use of a Combination Chain Transfer and Activating Agent to Control Molecular Weight and Optical Density of Pd Catalyzed Norbornene Polymers - A method of controlling the molecular weight of poly(cyclic) olefin (norbornene-type) polymers and activating the polymerization thereof with a single material is provided. Such method include adding a chain transfer/activating agent to a mixture of monomer(s), catalyst, solvent and an optional cocatalyst and polymerizing the mixture to form a polymer. It is shown that the amount of chain transfer/activating agent in the mixture can serve to control the molecular weight of the resulting polymer, its percent conversion or both, and in some embodiments the optical density of the resulting polymer. | 10-02-2008 |
| 20100324234 | COPOLYCONDENSATION POLYMERIZATION OF FLUOROPOLYMERS - Fluorinated copolymers are prepared via copolycondensation polymerization in a process comprising reacting A) a telechelic fluoroazido compound of formula N | 12-23-2010 |
| 20100029868 | PRODUCTION PROCESS OF OLEFIN POLYMER - The present invention provides a highly active process for producing an olefin polymer, comprising:
| 02-04-2010 |
| 20110218306 | ATOM TRANSFER RADICAL POLYMERIZATION PROCESS - Embodiments of the polymerization process of the present invention are directed to polymerizing free radically polymerizable monomers in the presence of a polymerization medium initially comprising at least one transition metal catalyst and an atom transfer radical polymerization initiator. The polymerization medium may additionally comprise a reducing agent. The reducing agent may be added initially or during the polymerization process in a continuous or intermittent manner. The polymerization process may further comprises reacting the reducing agent with at least one of the transition metal catalyst in an oxidized state and a compound comprising a radically transferable atom or group to form a compound that does not participate significantly in control of the polymerization process. Embodiments of the present invention comprise reacting a reducing agent with at least one of catalyst in an oxidized state and a compound comprising a radically transferable atom or group to initiate and/or maintain catalytic activity throughout the polymerization process. | 09-08-2011 |
| 20100121004 | PURIFICATION PROCESS FOR SEMICONDUCTING MONOMERS - Disclosed is a process for purifying monomers of Formula (II): | 05-13-2010 |
| 20100298508 | POLYETHYLENE COMPOSITIONS, METHOD OF PRODUCING THE SAME, ARTICLES MADE THEREFROM, AND METHOD OF MAKING THE SAME - The instant invention is a polyethylene composition, method of producing the same, articles made therefrom, and method of making the same. The polyethylene composition according to the instant invention comprises (1) less than or equal to 100 percent by weight of the units derived from ethylene; and (2) less than 15 percent by weight of units derived from one or more α-olefin comonomers. The polyethylene composition according the instant invention has a density in the range of 0.907 to 0.975 g/cm | 11-25-2010 |
| 20110306739 | PREPARATION OF LONG-CHAIN BRANCHED ISOTACTIC POLYPROPYLENE - The present invention discloses a method for preparing long-chain-branched isotactic polypropylene by first oligomerising propylene with a suitable oligomerisation catalyst system and then copolymerising propylene and the oligomer obtained in situ with a mono-aryl-substituted methylene bridged catalyst system. | 12-15-2011 |
| 20090137754 | POLYMER CATALYST DEACTIVATION AND ACID NEUTRALIZATION USING IONOMERS - A process for deactivating an active catalyst species in an olefin polymer stream exiting a polymerization reactor and neutralizing catalyst residues comprising adding to the olefin polymer stream in a quantity at least sufficient to inactivate the catalyst species and neutralize catalyst residues a composition comprising an ionomer having a molecular weight of at least 100 g/mol, and subsequently recovering the resulting polymer product. | 05-28-2009 |
| 20090149612 | BIAXIALLY ORIENTED POLYPROPYLENE FILM - The present technology relates to a biaxially oriented polypropylene film. The biaxially oriented polypropylene film comprises a polypropylene material having xylene solubles of at least 0.5 percent by weight. The polypropylene also has a strain hardening index of at least 0.15 measured at a deformation rate dε/dt of 1.00 s | 06-11-2009 |
| 20120130030 | Polycarboxylic Acid Gelling Agents - Scale inhibiting particulates formed from a mixture of fly ash and a phosphonic acid curing agent; wherein the fly ash is cured into a solid material by the contact with the phosphonic acid curing agent. The mixture may also contain a multivalent ion and the particulates may be coated with a coating material in an amount from about 0.1% to about 40% coating material by weight of the scale inhibiting particulate to delay the release of the scale inhibitor. | 05-24-2012 |
| 20100010177 | Method for Preparing Norbornene Monomer Composition, Norbornene Polymer Prepared Therefrom, Optical Film Comprising the Norbornene Polymer, and Method for Preparing the Norbornene Polymer - Disclosed is a method for producing a norbornene monomer composition, a norbornene polymer produced using the norbornene monomer composition, an optical film including the norbornene polymer, and a method for producing the norbornene polymer. The method includes reacting a reaction solution that contains cyclopentadiene, dicyclopentadiene, or a mixture of cyclopentadiene and dicyclopentadiene, an acetate compound, and a solvent so that a content of an exo isomer is 50 mol % or more. Variables such as a reaction temperature, a reaction time, a molar ratio between reactants, and addition of a solvent are controlled so that the exo isomer is contained in content of 50 mol % or more. Accordingly, it is possible to industrially produce an acetate norbornene addition polymer by using the acetate norbornene monomer composition containing the exo isomer in content of 50 mol % or more. | 01-14-2010 |
| 20090018288 | CROSSLINKED OLEFIN POLYMERS AND PROCESS FOR PRODUCTION THEREOF - Crosslinked olefin polymers which are reduced in stickiness and improved in rigidity, heat resistance, light resistance, and water resistance while retaining the molding properties such as injection moldability, spinnability, film-forming properties and the physical properties such as toughness (including elongation and break strength) and tackiness; and a process for the production thereof. Crosslinked olefin polymers which are obtained by reacting an α-olefin polymer produced by polymerization of at least one α-olefin having 6 or more carbon atoms or polymerization of at least one α-olefin having 6 or more carbon atoms with at least one other α-olefin with a crosslinking agent and which satisfy the following requirements: (1) the content of units of α-olefins having 6 or more carbon atoms is 50 mol % or more, (2) the molecular weight distribution (Mw/Mn) as determined by gel permeation chromatography (GPC) is 7.0 or more in terms of polystyrene, (3) the content of components having weight-average molecular weights (Mw) of 10 | 01-15-2009 |
| 20110046324 | IMPROVED CONTROLLED RADICAL POLYMERIZATION PROCESSES - A transition metal mediated chain transfer agent controlled polymerization process is described. The process combines the advantages of atom transfer radical polymerization (ATRP) and reversible addition fragmentation transfer (RAFT) polymerization. Synthesis of chain transfer agents useful in the disclosed processes is also disclosed. Other improvements on ATRP RAFT processes are also described. | 02-24-2011 |
| 20120271013 | Polyolefin Production - Use of a metallocene compound of general formula Ind | 10-25-2012 |
| 20130023632 | CATALYST SYSTEM BASED ZIRCONIUM - A catalyst system obtainable with a process comprising the following steps:
| 01-24-2013 |
