| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 525244000 | Contacting a solid polymer derived from ethylenic reactants only with an ethylenic reactant in the presence of a specified material | 42 |
| 20120108756 | PROCESS FOR PRODUCTION OF FLUORINE-CONTAINING BLOCK COPOLYMER - Provided is a process for the production of a fluorine-containing block copolymer, which suppresses the formation of a homopolymer as a by-product and which, regardless of whether the chain transfer constant of the iodine end is large or small, achieves nearly 100% conversion into a block copolymer. The process is characterized by reacting (A) a fluorine-containing polymer which has an iodine atom or a bromine atom at either or both terminals of the backbone chain and/or at a side-chain terminal with (M) a radical-polymerizable monomer in the presence of (C) a sulfur compound represented by general formula (2): (Y | 05-03-2012 |
| 20100240837 | PROCESS OF PREPARING FUNCTIONALIZED POLYMERS VIA ENZYMATIC CATALYSIS - The invention relates to functionalized, telechelic polymers synthesized by enzymatic catalysis and methods, and the functionalization of polymers via Michael addition with a lipase catalyst, and the crosslinking of mono- or difunctional (telechelic) polymers made by enzymatic catalysis, such as by using multifunctional coupling agents and enzyme catalysts. Quantitative transesterification of vinyl methacrylate with poly(ethylene glycol), poly(isobutylene) and poly(dimethylsiloxane) was achieved using | 09-23-2010 |
| 20110124818 | Catalyst Composition Comprising Shuttling Agent for Ethylene Multi-Block Copolymer Formation - A composition for use in forming a multi-block copolymer, said copolymer containing therein two or more segments or blocks differing in chemical or physical properties, a polymerization process using the same, and the resulting polymers, wherein the composition comprises the admixture or reaction product resulting from combining:
| 05-26-2011 |
| 20110082259 | SINGLY-TERMINATED POLYISOBUTYLENES AND PROCESS FOR MAKING SAME - The present invention generally relates to singly-terminated polyisobutylene (PIB) compounds, and to a process for making such compounds. In one embodiment, the present invention relates to singly-terminated polyisobutylene compounds that contain only one primary alcohol, amine, or methacrylate group as the single-terminating group. In another embodiment, the present invention relates to singly-terminated polyisobutylenes carrying exactly one terminal alcohol, amine, or methacrylate group, where such singly-terminated polyisobutylenes have a number average molecular weight of about 500 to about 5000 grams per mole. In still another embodiment, the present invention relates to singly-terminated polyisobutylene compounds that can be used to synthesize polyurethanes, to polyurethane compounds made via the use of such polyisobutylene compounds, and to processes for making such compounds. | 04-07-2011 |
| 20090253869 | METHOD FOR BULK POLYMERIZATION - A method for polymerizing conjugated diene monomer into polydienes, the method comprising: polymerizing conjugated diene monomer within a liquid-phase polymerization mixture that includes conjugated diene monomer, a lanthanide-based catalyst system, dicyclopentadiene or substituted dicyclopentadiene, and optionally organic solvent, with the proviso that the organic solvent, if present, is less than about 20% by weight based on the total weight of the polymerization mixture. | 10-08-2009 |
| 525245000 | Specified material contains transition metal atom | 15 |
| 20130085232 | Dynamic Modulation of Metallocene Catalysts - This invention relates to a process to alter comonomer distribution in a copolymer (as compared to a copolymer made absent the Lewis base modifier) comprising contacting ethylene and one or more C | 04-04-2013 |
| 20110294957 | Method for Transitioning Between Incompatible Olefin Polymerization Catalyst Systems - A method for transitioning from a Ziegler-Natta to a Phillips catalyst system for the olefin polymerization reaction in one reactor, preferably a gas phase reactor, is described. The method comprises the steps of a) discontinuing a first olefin polymerization reaction performed in the presence of the Ziegler-Natta catalyst system; b) performing a second olefin polymerization reaction in the presence of a further catalyst system comprising catalyst components (A) and (B) producing, respectively, a first and a second polyolefin fraction, wherein the M | 12-01-2011 |
| 20120196985 | OLEFIN BLOCK COPOLYMERS AND PRODUCTION METHODS THEREOF - The present description relates to olefin block copolymers having excellent elasticity and processability in conjunction with enhanced heat resistance, and to a preparation method thereof. The olefin block copolymers comprise a plurality of blocks or segments that comprise ethylene or propylene repeating units and α-olefin repeating units at different mole fractions from one another, wherein the block copolymer shows peaks at the 2θ of 21.5±0.5° and 23.7±0.5° in a wide-angle x-ray diffraction (WAXD) pattern, and the peak ratio defined by (the peak area at 21.5±0.5°)/(the peak area at 23.7±0.5°) is no more than 3.0. | 08-02-2012 |
| 20110230622 | METALLOCENE COMPLEX AND POLYMERIZATION METHOD OF OLEFIN - A metallocene complex by which high uptake efficiency of ethylene and/or α-olefin can be obtained compared with the conventional metallocene catalyst, and rubber component having high molecular weight can be polymerized, and polymerization method of olefin. | 09-22-2011 |
| 20120245294 | Olefin Triblock Polymers via Ring-Opening Metathesis Polymerization - This invention relates to a composition comprising a multiblock polyolefin represented by the formula: | 09-27-2012 |
| 20110015350 | Methods of making reversible crosslinked polymers and related methods - Methods are provided for making reversible crosslinked polymers. Exemplary methods comprise reacting first and second thermoplastic polymers having non-hindered olefins in the presence of a metathesis catalyst under conditions sufficient to form a crosslinked polymer. In certain embodiments, the methods comprise providing a crosslink promoting additive to improve the strength of the crosslinked polymer. In some embodiments, the methods comprise decrosslinking a crosslinked polymer through a metathesis or an ozonolysis reaction. | 01-20-2011 |
| 20100087600 | Catalyst Systems and their use for Metathesis Reactions - A novel process for reducing the molecular weight of nitrile rubber in the presence of specific catalyst systems containing the metathesis catalyst and also a specific addition of fluorine-containing boron compounds is provided. | 04-08-2010 |
| 20090171031 | Method of Forming Polyalkene Substituted Carboxylic Acid Compositions - The residual chlorine content of a polyolefin-substituted carboxylic acylating agent formed by a halogen-assisted reaction of a polyalkene and at least one olefinic, monounsaturated mono- or dicarboxylic acid, anhydride or ester, is reduced when the reaction is conducted in the presence of a controlled amount of a metal compound. | 07-02-2009 |
| 20120309903 | Polymacromonomer and Process For Production Thereof - This invention relates to a polymacromonomer comprising at least one macromonomer and from 0 to 20 wt % of a C | 12-06-2012 |
| 20120083575 | COMB ARCHITECTURE OLEFIN BLOCK COPOLYMERS - Embodiments of the invention provide a comb architecture olefin block copolymer, a method of making the comb olefin block copolymer and blends comprising the comb olefin block copolymer. | 04-05-2012 |
| 525247000 | Contains nontransition metal atom | 5 |
| 20110251352 | Catalyst Components for the Polymerization of Olefins - Prepolymerized catalyst component for the polymerization of olefins CH | 10-13-2011 |
| 20090176940 | Process for Producing Cycloolefin Resin Composition, and Cycloolefin Resin Composition - Provided is a process for producing a cycloolefin resin composition, comprising a step of hydrogenating a resin composition. The resin composition before hydrogenation, which is used in the above step, includes 0.01 to 20 parts by weight of an unsaturated hydrocarbon compound having a boiling point of 50° C. or higher, for example, a monomer employed in polymerization, per 100 parts by weight of the resin composition. | 07-09-2009 |
| 20090326158 | PROPYLENE BLOCK COPOLYMER - A propylene block copolymer satisfying the following requirements, which is obtained by producing in the step | 12-31-2009 |
| 20090131595 | Polymer composition - A composition suitable for use in pressure pipes and pipe fittings is disclosed comprising polymer of ethylene and from 0.5 to 5 wt % of a C | 05-21-2009 |
| 20100168341 | PROCESS FOR PRODUCING PROPYLENE BLOCK COPOLYMER - A production process of a propylene block copolymer, comprising the steps of (I) contacting a solid catalyst component containing titanium atoms, magnesium atoms and halogen atoms with an organoaluminum compound and an external electron donor represented by the defined formula, thereby forming a polymerization catalyst, (II) polymerizing propylene in the presence of the polymerization catalyst, thereby forming a polymer component (1) having an intrinsic viscosity, [η]1, and (III) copolymerizing propylene with an olefin other than propylene in the presence of the polymer component (1), thereby forming a polymer component (2) having an intrinsic viscosity, [η]2, which is three times or more [η]1. | 07-01-2010 |
| 525248000 | Specified material contains a carbon or hydrogen atom bonded directly to a metal atom | 6 |
| 20090048405 | METATHESIS-ACTIVE ADHESION AGENTS AND METHODS FOR ENHANCING POLYMER ADHESION TO SURFACES - The invention discloses an adhesion agent composition comprising at least one C | 02-19-2009 |
| 20120022219 | VINYL ETHER-BASED STAR POLYMER AND PROCESS FOR PRODUCTION THEREOF - Provided is a vinyl ether-based star polymer which has an arm including a vinyl ether polymer and an arm including an oxystyrene polymer. Also provided is a process for producing the star polymer, which can be continuously carried out in a series of steps. Said vinyl ether-based star polymer and process for producing the same are such that the polymer includes a core and polymer-chain arm portions extending from the core, in which an arm portion including vinyl ether repeating units and an arm portion including oxystyrene repeating units are provided. | 01-26-2012 |
| 525249000 | Metal atom is aluminum | 3 |
| 20110301296 | PROCESS FOR PRODUCING PROPYLENE BLOCK COPOLYMER - A propylene block copolymer comprising 60 to 85% by weight of a propylene polymer component and 15 to 40% by weight of an ethylene-propylene copolymer component, and satisfying the following requirements (I) to (V): (I) the above propylene polymer component has a melting temperature of 160° C. or higher measured according to DSC; (II) the above ethylene-propylene copolymer component has an ethylene content of 40 to 60% by weight measured according to a | 12-08-2011 |
| 20100168342 | Propylene Impact Copolymer and Method - Disclosed are propylene impact copolymer compositions, articles thereof, and processes for producing same. Polymerization with an improved catalyst composition provides a propylene impact copolymer with high melt flow and low volatiles content. | 07-01-2010 |
| 20120245295 | PREPARATION METHOD OF VINYL AROMATIC HYDROCARBON-CONJUGATED DIENE BLOCK COPOLYMER USING COUPLING REACTION WITH IMPROVED ION STABILITY - Disclosed is a method for preparing a vinyl aromatic hydrocarbon-conjugated diene block copolymer using a coupling reaction with improved ion stability. The method comprises (a) polymerizing a vinyl aromatic hydrocarbon monomer in a hydrocarbon solvent with an organic lithium compound as a polymerization initiator to prepare a first mix solution comprising a vinyl aromatic hydrocarbon block; and (b) adding a conjugated diene monomer to the first mix solution of step (a) to form a conjugated diene block on an end of the vinyl aromatic hydrocarbon block and to thereby prepare a second mix solution comprising a vinyl aromatic hydrocarbon block-conjugated diene block, wherein the method further comprises (c) adding a Lewis acid to the first mix solution before, during or after polymerization of the vinyl aromatic hydrocarbon monomer of step (a). | 09-27-2012 |
| 525250000 | Metal atom is Group IA metal atom (Li, Na, K, Rb, Cs, Fr) | 1 |
| 20100234532 | MONOVINYLARENE CONJUGATED DIENE BLOCK COPOLYMER COMPOSITIONS FOR SHRINKABLE FILMS - The present invention relates generally to monovinylarene-conjugated diene block copolymers adapted for shrinkable film applications. In one embodiment, a block copolymer is provided wherein an oriented 2 mil film of the block copolymer oriented at 100° C. or less exhibits less than 10% shrinkage at 70° C., and at least 70% shrinkage at 100° C. | 09-16-2010 |
| 525254000 | Specified material contains silicon atom | 2 |
| 20110112251 | POLYMERISABLE MASS WITH CROSS-LINKING NANOPARTICLES - The invention relates to a polymerizable composition containing:
| 05-12-2011 |
| 20110172367 | Grafted Polyethylene - A process for grafting hydrolysable silane groups to polyethylene includes reacting polyethylene with an unsaturated silane having at least one hydrolysable group bonded to Si, in the presence of a compound capable of generating free radical sites in the polyethylene. The grafted polyethylene prepared by the process can be shaped into a pipe and crosslinked by water flowing through the pipe. | 07-14-2011 |
| 525255000 | Specified material contains a phosphorus atom | 1 |
| 20120190795 | CATALYST FOR LIVING RADICAL POLYMERIZATION AND POLYMERIZATION METHOD - Provided is a low-cost, highly active, environmentally friendly living radical polymerization catalyst which does not require a radical initiator. An organic compound having an oxidation-reduction capability is used as a catalyst. Even if a radical initiator is not used, a monomer can be subjected to a radical polymerization to obtain a polymer having narrow molecular weight distribution. The cost of the living radical polymerization can be remarkably reduced. It is made possible to prevent adverse effects of using a radical initiator. The present invention is significantly more environmentally friendly and economically excellent than conventional living radical polymerization methods, due to advantages of the catalyst such as low toxicity of the catalyst, low amount of the catalyst necessary, high solubility of the catalyst, mild reaction conditions, and no coloration/no odor (which do not require a post-treatment for a molded article), etc. | 07-26-2012 |
| 525259000 | Specified material contains an organic nitrogen compound | 1 |
| 20130131276 | Processes, Products, and Compositions Having Tetraalkylguanidine Salt of Aromatic Carboxylic Acid - Disclosed are processes, products, and compositions having tetraalkylguanidine salt of aromatic acid. The processes include providing a pre-mix comprising an aromatic carboxylic acid component and contacting a tetraalkylguanidine with the aromatic carboxylic acid component in the pre-mix to form the tetraalkylguanidine salt of aromatic carboxylic acid or producing a catalyst composition by contacting the tetraalkylguanidine with the aromatic carboxylic acid component to form the tetraalkylguanidine salt of aromatic carboxylic acid. The compositions include the tetraalkylguanidine salt of aromatic carboxylic acid. The product is formed by the tetraalkylguanidine salt of aromatic carboxylic acid. | 05-23-2013 |
| 525261000 | Specified material contains an organic sulfur compound | 4 |
| 20080214739 | High cor golf ball using zinc dimethacrylate - The present invention is directed to resilient golf balls and portions thereof including compositions containing zinc dimethacrylate and zinc pentachlorothiophenol, and methods for making same. In particular, the present invention is directed to a golf ball having at least one of a center, cover, or intermediate layer that includes a reaction product that includes a resilient polymer component, a free radical source, zinc dimethacrylate and at least one halogenated organosulfur compound having the following general formula I: | 09-04-2008 |
| 20120108757 | THIOCARBONYL COMPOUND AND PROCESS FOR PRODUCING POLYMER USING SAME AND THAT POLYMER - A thiocarbonyl compound represented by the following formula (a) is useful as a RAFT agent. By using this, a process for producing a polymer having a excellent reactivity or monomer conversion rate and its polymer are provided. In the following formula (a), n indicates 1 to 6, and Z indicates an organic group selected from a substituted or unsubstituted aryl or a substituted or unsubstituted heteroaryl | 05-03-2012 |
| 20090023865 | Method of Treating Rubber Composition with Cure Inhibitor to Create Soft Skin in Golf Ball Core - A method of making a golf ball comprising the steps of providing a preform comprising an uncured polybutadiene composition; coating the preform with a cure-altering material comprising an organosulfur compound, an inorganic sulfide compound, or a metal-containing organosulfur compound; curing the coated preform at a predetermined temperature to form a crosslinked golf ball core having an outer surface having a first hardness and a geometric center having a second hardness greater than the first to define a negative hardness gradient; and forming a cover layer about the core to form the golf ball. | 01-22-2009 |
| 20120123057 | METHOD FOR PREPARING OLEFIN-BASED SEGMENTED COPOLYMERS - The present application relates to a method for preparing olefin-based segmented copolymers through reversible addition-fragmentation chain transfer (RAFT), wherein the method comprises: a step of polymerizing vinyl-based monomers through reversible addition-fragmentation chain transfer (RAFT) using a trithiocarbonate-based chain transfer agent to synthesize vinyl-based polymers; and a step of grafting the synthesized vinyl-based polymers to olefin-based polymers. The method of the present invention successfully synthesizes olefin-based segmented copolymers through the two simple above-described steps. | 05-17-2012 |
| 525263000 | Specified material contains a peroxy group, i.e., -O-O- | 7 |
| 20090221757 | POLYMERS CONTAINING AN OLIGOMERIC MACROMONOMER - The present invention is directed to a polymer that comprises an oligomeric macromonomer and a core from which the oligomeric macromonomer extends, wherein the oligomeric macromonomer comprises reactive functional groups and has an average functionality ranging from 1.0 to 30.0, and wherein the core is <10 weight % of the total polymer weight. The present invention is also directed to a method for making the same. | 09-03-2009 |
| 20120245297 | MODIFIED PROPYLENE POLYMER - Disclosed is a modified propylene polymer excellent in the balance between melt tension and flowability, the modified propylene polymer being obtainable by reacting 100 parts by weight of a propylene polymers (A), from 0.1 to 50 parts by weight of an ethylenically unsaturated bond-containing compounds (B), and from 0.01 to 20 parts by weight of an organic peroxide (C), wherein a melt flow rate measured at 230° C. under a load of 2.16 kg and a melt tension measured at 190° C. satisfy the following formula (1): | 09-27-2012 |
| 20120245296 | METHOD FOR PRODUCING MODIFIED PROPYLENE POLYMER - Disclosed is a method for producing a modified propylene polymer that exhibits low flowability and also exhibits little fluctuation in melt flow rate compared with the melt flow rate of the propylene polymer before modification, the method involving a heat treatment step of subjecting a mixture comprising 100 parts by weight of a propylene polymer (A), from 0.1 to 50 parts by weight of an ethylenically unsaturated bond-containing compound (B), and from 0.01 to 20 parts by weight of an organic peroxide (C) whose decomposition temperature at which the half-life thereof becomes 1 minute is lower than 120° C. to heat treatment by using an extruder at a temperature lower than the decomposition temperature of the organic peroxide (C) at which the half-life thereof becomes 1 minute. | 09-27-2012 |
| 20110021710 | Crosslinkable Propylene-Based Copolymers, Methods for Preparing the Same, and Articles Made Therefrom - Provided are crosslinkable propylene-based copolymers, methods for making the same, elastomeric compositions including the same, and articles made therefrom, e.g., films and fibers. Exemplary elastomeric compositions are composed of at least one propylene-based polymer comprising propylene derived units and one or more dienes, the propylene-based polymer having a triad tacticity of from 50% to 99% and a heat of fusion of less than 80 J/g; about 0.5 wt % to about 10 wt % vinyl siloxane; and about 0.1 wt % to about 1.0 wt % peroxide. The elastomeric compositions can be extruded and crosslinked at a temperature of at least about 50° C. and a relative humidity of at least about 90% to provide a crosslinked elastomeric composition. The crosslinked elastomeric compositions are particularly useful for making fibers and films. | 01-27-2011 |
| 525265000 | Aromatic or cycloaliphatic peroxy compound | 3 |
| 20090062474 | NOVEL MULTIFUNCTIONAL ADDITIVE GRAFTED RUBBER AND PROCESS FOR THE PREPARATION THEREOF - The present invention relates to a novel multi functional additive grafted rubber. More particularly the present invention relates to novel grades of rubber and in particular to chemically grafted with cardanol (meta-penta decenyl phenol) and/or its derivatives. Importantly the rubber grades of the invention involve chemically anchored/grafted selective meta alkenyl phenol and/or its derivatives in the backbone of natural or synthetic rubber. Importantly, such rubber variant of the invention have high plasticity, lower Mooney and melt viscosities, better cure properties as compared to conventional virgin natural rubber or natural rubber plasticised with aromatic process oils. | 03-05-2009 |
| 20120142867 | ACRYLATE COMPOSITION - The invention provides a composition containing (A) one or more (meth)acrylate compounds selected from among a (meth)acryl-modified silicone fluid, a long-chain alkyl(meth)acrylate, and a polyalkylene glycol(meth)acrylate having a number average molecular weight of 400 or more; (B) a (meth)acrylate compound having an alicyclic hydrocarbon group which has six or more carbon atoms and which is bonded to the compound via an ester bond; (C) (meth)acrylic acid or a (meth)acrylate compound having a polar group; and (D) a radical polymerization initiator. The composition is suitably employed as a raw material for, for example, an encapsulating material or a lens, exhibits transparency and heat resistance comparable to conventional levels, and provides a cured product exhibiting excellent adhesion to a base member surrounding the cured product. | 06-07-2012 |
| 20080242803 | POLYPROPYLENE DERIVATIVES AND PREPARATION THEREOF - A polypropylene derivative is provided. The polypropylene derivative includes a reactive monomer grafted on polypropylene, with a grafting yield exceeding 5%. A method for preparing the polypropylene derivative is also disclosed. The method includes mixing a reactive monomer, polypropylene and a compatibilizer to prepare a polypropylene derivative grafted with the reactive monomer, with a grafting yield exceeding 5%. | 10-02-2008 |
| 525266000 | Specified material contains an organic chalcogen compound | 1 |
| 20110112252 | Method for Post-Crosslinking of the Surface of Water-Absorbing Polymer Particles - A process for thermally surface postcrosslinking water-absorbing polymer particles in a fluidized bed generated by means of a carrier gas, wherein the surface postcrosslinker is supplied to the fluidized bed in gaseous form. | 05-12-2011 |
