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| Number | Title | Issue Date |
| 7371798 | Thermoplastic water-curable composition, molded object made from the thermoplastic water-curable composition, and process for producing the same A thermoplastic water-curable composition which is excellent in mechanical properties, heat resistance, dimensional stability, and moldability and from which a mechanical part of a complicated shape can be produced: a molding formed from the thermoplastic water-cura... | 05/13/2008 |
| 7335703 | Polyolefin graft copolymer prepared in the presence of coordination polymerization catalyst based on late transition metal complex and method for making the same A novel polyolefin graft copolymer prepared by graft-copolymerizing an olefin monomer with a (meth)acryl macromonomer or an isobutylene macromonomer in the presence of a coordination polymerization catalyst based on a late transition metal complex and a method for m... | 02/26/2008 |
| 7300984 | Process for preparing graft copolymers and membranes formed therefrom A process for preparing a graft copolymers is provided comprising exposing a polymeric base material to a dose of ionizing radiation, and then contacting the irradiated base material with a microemulsion comprising at least one fluorostyrenic monomer, water and wate... | 11/27/2007 |
| 7282546 | Cocatalysts for reduction of production problems in metallocene-catalyzed polymerizations Polyolefins may be prepared using a cocatalyst conforming to the formula: AIRz(Xz)nLzm wherein Rz is a linear or branched organic moiety having at least 5 carbons and Xz | 10/16/2007 |
| 7282540 | Process for producing particles for diagnostic reagent A process of producing particles for diagnostic reagent, including forming a matrix particle by mixing a nuclear particle having a CV value of 20% or less and a magnetic substance containing at least one of Fe2O3 and Fe3O4 | 10/16/2007 |
| 7276561 | Processes for producing nano-space controlled polymer ion-exchange membranes A polymer film substrate is irradiated with ions to make a large number of nano-sized through-holes and the substrate is further irradiated with an ionizing radiation so that a functional monomer is grafted or co-grafted onto a surface of the film and within the hol... | 10/02/2007 |
| 7238756 | Polymerization process and control of polymer composition properties Methods of controlling the flow index and/or molecular weight split of a polymer composition are disclosed. The method of producing a polymer composition in one embodiment comprises incorporating a high molecular weight polymer into a low molecular weight polymer to... | 07/03/2007 |
| 7220806 | Process for increasing ethylene incorporation into random copolymers A process for preparing low melting copolymers comprising contacting a mixture of olefin monomers with a CpFlu-type metallocene catalyst under reaction conditions sufficient to form a copolymer. The copolymers thus prepared desirably display melt temperatures from a... | 05/22/2007 |
| 7199072 | Process of producing a supported mixed catalyst system and polyolefins therefrom A process for preparing a mixed catalyst compound used in the polymerization of polyolefins to produce bimodal polyethylenes is disclosed. In an embodiment, a process of preparing the mixed catalyst system includes: mixing a first catalyst and an activator in a firs... | 04/03/2007 |
| 7199195 | Polyethylene resins The invention provides ethylene/α-olefin copolymers exhibiting improved environmental stress cracking resistance properties, and methods for the production of the copolymers in a single reactor by means of a bimetallic catalyst including a Ziegler component and a m... | 04/03/2007 |
| 7172987 | Bimetallic catalyst, method of polymerization and bimodal polyolefins therefrom Bimetallic catalysts, and methods of producing a bimetallic catalyst comprising a modified Ziegler-Natta catalyst and a metallocene are provided, in one embodiment the method including combining: (a) a Ziegler-Natta catalyst comprising a Group 4, 5 or 6 metal halide... | 02/06/2007 |
| 7101939 | Ethylene/α-olefin copolymer made with a non-single-site/single-site catalyst combination, its preparation and use An ethylene/α-olefin copolymer comprising a component produced by a non-single-site polymerization catalyst and a component produced by a single-site polymerization catalyst, its preparation and use are described. The copolymer has an α-olefin content of 5 to 20 p... | 09/05/2006 |
| 7081285 | Polyethylene useful for blown films and blow molding Blown films and blow molded objects may be prepared using a polyethylene composition comprising a unimodal metallocene catalyzed polyethylene copolymer. The polyethylene copolymer has high melt fow rate and good melt strength allowing it to be useful in both extrusi... | 07/25/2006 |
| 7053153 | Ethylene copolymer compositions suitable for viscosity index improvers and lubricant compositions The present invention provides processes for making a bimodal solid polymer composition suitable for use as a viscosity index improver. Ethylene and an alpha-olefin comonomer are polymerized in the presence of a metallocene catalyst to form first and second copolyme... | 05/30/2006 |
| 6995109 | Method of making a bimetallic catalyst with higher activity Methods of preparing bimetallic catalysts are disclosed. The methods include the steps of providing a supported non-metallocene catalyst, contacting a slurry of the supported non-metallocene catalyst in a non-polar hydrocarbon with a solution of a metallocene compou... | 02/07/2006 |
| 6991741 | Controlled room temperature synthesis of magnetic metal oxide nanoclusters within a diblock copolymer matrix A method of room temperature synthesis of magnetic metal oxide nanoclusters within a diblock copolymer matrix includes the step of synthesizing, by ring opening metathesis polymerization technique, a diblock copolymer having a repeat unit ratio m/n, introducing, at ... | 01/31/2006 |
| 6943134 | Bimodal polyolefin production process and films therefrom A process of producing a bimodal polyolefin composition is described, which includes in one embodiment contacting monomers with a supported bimetallic catalyst composition for a time sufficient to form a bimodal polyolefin composition that includes a high molecular ... | 09/13/2005 |
| 6921804 | Cascaded polyolefin slurry polymerization employing disengagement vessel between reactors A disengagement vessel employing a lock hopper effectively reduces concentration of non-polymer-associated components in the polymer product slurry of a first olefin slurry polymerization reactor, allowing cascading of a second slurry polymerization reactor operatin... | 07/26/2005 |
| 6919408 | Thermoplastic transparent resin composition and method of manufacturing same Disclosed is a thermoplastic transparent resin composition and a method for manufacturing the same. The resin composition includes 3-15 parts by weight of small aperture polybutadiene rubber latex; 5-25 parts by weight of large aperture polybutadiene rubber latex; 4... | 07/19/2005 |
| 6831142 | Pulverulent, crosslinked polymers which absorb aqueous liquids and blood The invention relates to absorptive, crosslinked polymers which are based on partly neutralized, monoethylenically unsaturated monomers carrying acid groups, and have improved properties, in particular in respect of their capacity for transportation of liquids in th... | 12/14/2004 |
| 6828386 | Process for preparing graft copolymers and membranes formed therefrom A process for preparing a graft copolymers is provided comprising exposing a polymeric base material to a dose of ionizing radiation, and then contacting the irradiated base material with a microemulsion comprising at least one fluorostyrenic monomer, water and wate... | 12/07/2004 |
| 6797782 | Process for producing particles for diagnostic reagent A process of producing particles for diagnostic reagent, including a step of polymerizing a polymerizable monomer in the presence of a matrix particle having a magnetic substance layer containing at least one of Fe2O3 and Fe3O4 ... | 09/28/2004 |
| 6765052 | Olefin type thermoplastic elastomer An olefin type thermoplastic elastomer which satisfies the following formulae (I) to (III): Y≦−2X+350 (I) X | 07/20/2004 |
| 6531523 | Method of making biocompatible polymeric adsorbing material for purification of physiological fluids of organism A beaded polymeric adsorbent has a core part; a shell part arranged around the core part, with one of the parts having a lipophilic property and another of the parts having a hydrophilic property, and is produced by preparing an organic phase composed of ... | 03/11/2003 |
| 6459005 | Ethylene/-olefin copolymer, method for producing the same, and use thereof The present invention intends to provide an ethylene/-olefin copolymer of specific structure, exhibiting excellent performance as a lubricant oil additive, capable of having various functional groups in high ratio, and serviceable as raw material f... | 10/01/2002 |
| 6441097 | Alkylaryl and arylalkyl monosulfonic acid catalysts for crosslinking polyethylene The present invention is directed to a crosslinkable polymer composition comprising an alkoxysilane functional polyolefin and a silanol crosslinking catalyst selected from the group consisting of: (i) an alkylated naphthalene monosulfonic acid substituted with... | 08/27/2002 |
| 6395837 | Alkylated aryl disulfonic acid catalysts for crosslinking polyethylene The present invention is directed to a highly active condensation catalyst suitable for the crosslinking of alkoxysilanyl polyolefins, e.g., silane functional polyethylene, selected from the group consisting of: (i) an alkylated aryl disulfonic acid selected f... | 05/28/2002 |
| 6262195 | Multi-stage process for the polymerization of olefins A multi-stage process for preparing ethylene (co)polymers having broad molecular weight distributions is disclosed, said process comprising: (A) a first polymerization stage in which, in the presence of a Ti or V catalyst, a first ethylene polymer is prepared;... | 07/17/2001 |
| 6183863 | Adhesive ethylene copolymer resin compositions and laminates using the same An adhesive ethylene copolymer resin composition blend of a modified ethylene/-olefin copolymer obtained by graft-modifying an unmodified linear ethylene/-olefin copolymer comprising ethylene and an a-olefin of 3 to 20 carbon atoms with an u... | 02/06/2001 |
| 6140408 | Room temperature coalescable aqueous fluoropolymer dispersions and method for their manufacture This invention relates to novel room temperature coalescable aqueous fluoropolymer dispersions and a process for their manufacture. These dispersions may be used in a variety of applications including high temperature thermoplastic coatings, polishes, roo... | 10/31/2000 |
| 6110880 | Polyolefin block copolymer viscosity modifier A viscosity modifier comprising a low molecular weight block copolymer including A blocks and B blocks, wherein the A blocks comprise at least about 93 wt. % polyethylene and the B blocks comprise a copolymer of between about 40 wt. % to 75 wt. % ethylene... | 08/29/2000 |
| 6080815 | Process for producing thermoplastic resins having high impact strength The present invention relates to a process for producing a thermoplastic resin having high impact strength and good surface gloss, which comprises graft copolymerizing at least a vinyl cyanide compound and at least an aromatic vinyl compound for a short p... | 06/27/2000 |
| 6028140 | Process for the (co)polymerization of olefins Homopolymers or copolymers obtained by a multistage process of olefins having the formula CH2 .dbd.CHR, in which R is hydrogen or R has from 1 to 10 carbon atoms and is an alkyl, cycloalkyl or aryl group, the process comprising: (A) a first sta... | 02/22/2000 |
| 5817707 | Process for making propylene graft copolymers using a redox initiator system A graft copolymer of a propylene polymer material is prepared by (1) making an oxidized propylene polymer material by (a) irradiating a porous particulate propylene polymer material in the substantial absence of oxygen, (b) exposing the irradiated propyle... | 10/06/1998 |
| 5688865 | Process and system for preventing pressure tap fouling in tandem polymerization reactors A process and system for prevention of fouling of pressure taps in a first gas phase fluidized bed polymerization reactor while avoiding sheeting during production of polyolefins in a second downstream gas phase fluidized bed polymerization reactor wherei... | 11/18/1997 |
| 5648422 | Process for the (co)polymerization of olefins Multistage process for the polymerization of one or more olefins of the formula CH2 .dbd.CHR, in which R is hydrogen or an alkyl, cycloalkyl or aryl group having from 1 to 10 carbon atoms, comprising: (A) a first stage of polymerization, in which a ... | 07/15/1997 |
| 5599854 | Preparation of butadiene-based impact modifiers An improved process for preparing core/shell MBS modifiers is disclosed, wherein by adding feeds of the monomers which form the second and/or third stage polymers prior to completion of polymerization of the earlier stages, a process with substantially re... | 02/04/1997 |
| 5556921 | Air dried cross-linkable polymeric vehicles which include acetylenic groups This invention is directed to a fast curing polymer composition which does not require baking or thermosetting to provide a cross-linked coating binder. The composition comprises a polymer which is a homopolymer or copolymer of alpha, beta unsaturated mon... | 09/17/1996 |
| 5534594 | Preparation of butadiene-based impact modifiers An improved process for preparing core/shell MBS modifiers is disclosed, wherein by adding feeds of the monomers which form the second and/or third stage polymers prior to completion of polymerization of the earlier stages, a process with substantially re... | 07/09/1996 |
| 5525678 | Process for controlling the MWD of a broad/bimodal resin produced in a single reactor A bimetallic catalyst produces broad or bimodal molecular weight distribution polyolefin resin whose composition depends on the ratio of the concentration of the two metals of the catalyst producing the HMW and LMW components. The bimetallic catalyst prod... | 06/11/1996 |
