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9012356 Method for producing polyacrylic acid (salt)-based water absorbent resin  
The purpose of the present invention is to provide a method for producing a water absorbent resin having improved physical properties, particularly, improved saline flow conductivity (SFC) and...
8809471 Synthesis of making 2,3,3,3-tetrafluoropropene containing fluoropolymers  
The invention relates to a method for synthesizing 2,3,3,3-tetrafluoropropene containing fluoropolymers using non-fluorinated surfactants in an emulsion process. No fluorinated surfactants are...
8742026 Process for producing water-absorbing polymer particles with improved permeability  
The invention relates to a process for producing water-absorbing polymer particles with improved permeability, comprising the steps of polymerization, drying, grinding, classification and thermal...
8674026 Ethylene copolymer having multiple pitch in molecular weight distribution and the method of preparing the same  
Disclosed are an ethylene polymerization process, a catalyst for use in the process, a production method employing the catalyst, and a product produced thereby. More specifically, disclosed is a...
8637615 Methods for making polyolefin products having different shear thinning properties and haze  
Provided is a method for making a polyolefin comprising contacting one or more olefins in a reactor containing a catalyst; polymerizing the one or more olefins to produce an olefin polymer...
8569432 Semi-continuous method for emulsion polymerisation  
A method for producing aqueous polymer dispersions by means of radically initiated emulsion polymerisation, in an aqueous medium, of vinyl ester and ethylene, in series-connected polymerisation...
8541520 Method of making high-density polyethylene with titania-iron nanofillers  
The method of making high-density polyethylene with titania-iron nanofillers involves mixing a TiO2/Fe titania-iron nanofiller with a vanadium (III) complex bearing salicylaldiminato ligands...
8492494 Ethylene copolymer with improved impact resistance  
Provided are ethylene copolymers with excellent impact resistance. More specifically, provided are ethylene copolymers satisfying certain correlation between the falling dart impact strength (F)...
8449981 Microcapsules  
The present invention concerns microcapsules comprising a capsule core and a capsule wall, the capsule wall being constructed from 30% to 90% by weight of one or more C1-C24-alkyl esters of...
8410222 Method for producing water-absorbing polymer particles  
A process for producing water-absorbing polymer particles, comprising polymerization, drying, comminution, classification and recycling of the undersize obtained in the classification, wherein the...
8389654 High melt flow polymer of improved durability for pipe applications  
The present invention relates to a polymer composition, comprising (i) a polypropylene homopolymer,(ii) a polypropylene random copolymer, prepared by copolymerization of propylene with an olefin...
8067512 Monomer/solvent separation and recycle process for propylene containing polymers  
Monomer/solvent separation and recycle processes for continuous supercritical, solution and advanced solution polymerization processes for propylene-containing polymers and their blends are...
8039563 Process for preparing lattices stabilized by polyvinyl alcohol  
A process for preparing polymer dispersions stabilized by polyvinyl alcohol includes a step of emulsion polymerization. The polymerization occurs such that at least 60% of the total conversion...
8034885 Free-radical polymerization process producing aqueous polymer dispersion with low residual monomer content utilizing oil and water soluble initiators  
The present invention provides a novel one-step process for preparing an aqueous polymer dispersion by the free radical aqueous emulsion polymerization comprising mixing at least water, a...
8026315 Production of water-absorbing polymeric particles  
The present invention relates to a process for producing water-absorbing polymeric particles by polymerizing a monomer solution, which comprises removing the polymer gel from the reactor when the...
7993592 Process for production of amphoteric electrolyte resin by continuous bulk polymerization and apparatus for the production  
A continuous polymerization apparatus is provided for producing an amphoteric electrolyte resin by continuous bulk polymerization at low cost, which apparatus includes a reaction vessel, the...
7951880 Compositions for breast implant filling and methods of use  
The methods and compositions disclosed herein describes a solution containing at least one block co-polymer that is a liquid at lower temperatures and transitions to a gel at higher temperatures....
7943707 Vinylidene fluoride polymer and process for producing the same  
A monomer comprising vinylidene fluoride as a principal component is suspension-polymerized by supplying the monomer in division to a polymerization system containing a polymerization initiator at...
7923517 Polymer microparticles and production method for the same  
A method for producing polymer particles which includes: forming polymer particles by heterogeneous polymerization of a monomer in a supercritical fluid and/or subcritical fluid, wherein a radical...
7884168 Heterogeneous rubbery polymers having random, tapered, and block portions therein and methods of making same  
A heterogeneous rubbery polymer is provided that includes a polymer chain derived from a vinyl aromatic monomer and a conjugated diolefin monomer, wherein from greater than 20 weight percent to...
7879962 Powders or manufactured articles having a surface hydrophilicity  
Powders or hydrophilic manufactured articles of E/CTFE and/or E/TFE thermoprocessable polymers, or of CTFE copolymers, wherein, on the surface of the powder or the manufactured article, one or...
7879957 Process for production of amphoteric electrolyte resin by continuous bulk polymerization and apparatus for the production  
A process for producing an amphoteric electrolyte resin by continuous bulk polymerization at low cost is provided. Also provided is an apparatus for achieving the process. The process comprises...
7847039 Transition metal complexes, and catalysts compositions for preparing ethylene homopolymers or copolymers  
Disclosed are a transition metal complex having a high catalytic activity for the preparation of an ethylene homopolymer or a copolymer of ethylene and α-olefin and a catalyst composition...
7834107 Preparation of polyolefins having high molecular weights in the presence of an organic transition metal compound in a gas-phase fluidized-bed reactor  
Process for preparing polyolefins having high molecular weights in the presence of a catalyst comprising an organic transition metal compound in a gas-phase fluidized-bed reactor, where the...
7816466 Propylene polymer composition for injection molding  
A propylene polymer composition comprising (weight percentages being referred to the sum of A+B): (A) 75-95% by weight of a copolymer of propylene comprising from 0.5 to 3.0 mole % of comonomer...
7812103 Method for reducing sheeting and agglomerates during olefin polymerisation  
The present invention relates to a method for reducing/suppressing sheeting or agglomerates during polymerization of olefins, especially during the fluidized bed gas phase polymerization of...
7807769 Isotactic polypropylene produced from supercritical polymerization process  
This invention relates to an isotactic propylene homopolymer having: more than 15 and less than 100 regio defects (sum of 2,1-erythro and 2,1-threo insertions and 3,1-isomerizations) per 10,000...
7754831 Vinyl polymer, process for producing vinyl polymer, thermosetting coating composition, and coating material  
A vinyl-based polymer having a mass average molecular weight of 1500 to 10000, which is prepared by a first step of continuously feeding a material mixture containing a vinyl-based monomer to a...
7737229 Continuous preparation of ethylene homopolymers or copolymers  
The invention relates to a process for the continuous preparation of ethylene homopolymers or copolymers in the presence of free-radical polymerization initiators and, if desired, molecular weight...
7728081 Apparatus for continuous polymerization and method for continuous polymerizing using the same  
An apparatus for continuous polymerization with a simple constitution to produce a polymer having a high quality, as well as a method for producing the polymer using the apparatus, are provided....
7718743 Methods for monitoring reactor passivation for gas phase polymerization  
Methods and system for in-situ measurement of polymer growth within an olefin polymerization reactor are provided. The method includes polymerizing one or more olefins within a reactor at a first...
7683141 Polymer film comprising a propylene random copolymer  
The present invention relates in a first embodiment to a polymer film comprising a propylene random copolymer with a total comonomer content of 4.5 to 12 mol % wherein the sealing initiation...
7605214 Process for stopping continuous polymerization  
The present invention provides a process for stopping continuous polymerization in which a raw material monomer is polymerized in a reaction vessel by continuously feeding the raw material monomer...
7601787 Ethylene polymerization process  
A process for polymerizing ethylene is disclosed. The polymerization is performed in the presence of a Ziegler-Natta catalyst system in two slurry reaction zones. Most of the polyethylene (70-95...
7582709 Process and apparatus for manufacturing ethylene polymers and copolymers  
The invention relates to a process for the manufacture of ethylene polymers and copolymers in which ethylene is compressed in a primary compressor at a throughput of at least 55 tonnes/hour, mixed...
7572867 Polymerization process for producing polydienes  
There is disclosed a process for producing a conjugated diene-containing polymer wherein a stream comprising conjugated diene monomer and a specified catalyst, that includes a lanthanide compound...
7569620 High modulus crosslinked polyethylene with reduced residual free radical concentration prepared below the melt  
The present invention provides an irradiated crosslinked polyethylene containing reduced free radicals, preferably containing substantially no residual free radical. Disclosed is a process of...
7531602 Polymer blends  
A blend of polymers comprising from 5 to 95 weight % of a polymer having a high molecular weight made using a single site type catalyst and from 95 to 5 weight % of a polymer having a lower...
7507780 Polymerization process  
The present invention relates to a continuous gas phase process comprising polymerizing one or more hydrocarbon monomer(s) in a fluidized bed reactor in the presence of a Ziegler-Natta-type...
7507774 High modules crosslinked polyethylene with reduced residual free radical concentration prepared below the melt  
The present invention provides an irradiated crosslinked polyethylene containing reduced free radicals, preferably containing substantially no residual free radical. Disclosed is a process of...
7482409 Process for producing ethylene-α-olefin-polyene copolymer  
The object of the present invention is to provide a process for producing an ethylene-α-olefin-polyene copolymer by continuous multistage polymerization which can give an ethylene-α-olefin-polyene...
7473745 Preparation of multimodal polyethylene  
Disclosed is a polyethylene composition. The composition comprises single-site multimodal resin A and single-site multimodal resin B, wherein resin A differs from resin B in molecular weight, in...
7470756 Propylene random copolymer and process for the production thereof  
The present invention relates to a process for preparing a propylene random copolymer comprising polymerisation of propylene with a comonomer, said comonomer being ethylene or an α-olefin...
7399811 Nanohybrid polymers for ophthalmic applications  
The present invention relates to novel materials particularly useful for ophthalmic applications and methods for making and using the same. More particularly, the present invention relates to...
7332549 Process for the (co-)polymerisation of ethylene in the gas phase  
The present invention relates to a process for improving the start up of polymerization or copolymerization of ethylene in a gas phase reactor, preferably a fluidized bed gas phase reactor.
7321015 Adjusting polymer characteristics through process control  
Properties of a polymer produced using a dual catalyst on the same support, such as polydispersity and comonomer incorporation, may be controlled by controlling reaction parameters such as...
7319125 Supercritical polymerization process and polymers produced therefrom  
This invention relates to a process to produce propylene polymers comprising contacting a metallocene catalyst compound and an activator in a reaction medium comprising propylene, from 0 to 30...
7276565 Continuous miniemulsion polymerization process  
A process including: heating to a first polymerization temperature a first mixture including a free radical polymerizable monomer, a free radical initiator, and a stable free radical compound to...
7205362 Method for controlled radical polymerization  
The present invention relates to a process for controlled radical polymerization using an organosulfur reversible chain transfer agent which consists in preparing polymers having a molar weight of...
7148297 Catalytic polymerization process  
This invention relates to a process for controlling the architecture of copolymers of at least two unsaturated monomers, made by free-radical polymerization in the presence of a cobalt-containing...

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