Specified Material Contains A Peroxy Group, I.e., -o-o- Patents (Class 525/263)
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Patent number: 6548603Abstract: A modified polyolefin resin composition according to the present invention comprises a polyolefin resin modified with an unsaturated carboxylic acid and is suitable for imparting a good adhension property.Type: GrantFiled: March 22, 2000Date of Patent: April 15, 2003Assignee: Mitsubishi Chemical CorporationInventors: Tsukasa Satou, Yuuichi Shimizu, Satoru Yamamoto, Kazunori Yano
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Patent number: 6531523Abstract: 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 water insoluble monounsaturated and poly unsaturated comonomers; preparing an aqueous phase composed of a mixture of water soluble monounsaturated and polyunsaturated comonomers; forming a dispersion of the organic phase and the aqueous phase in a single vessel; and creating conditions for first polymerizing of one of the phases which forms the core part and thereafter polymerizing the other of the phases which forms the shell part.Type: GrantFiled: October 10, 2000Date of Patent: March 11, 2003Assignee: Renal Tech International, LLCInventors: Vadim Davankov, Maria Tsyurupa, Ludmila Pavlova
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Patent number: 6531547Abstract: A process for preparing a block copolymer. In one embodiment, the block copolymers comprise (A) a poly (vinyl aromatic) block and (B) a poly (vinyl aromatic-co-acrylic) block, said process comprising the steps, (a) polymerizing at an elevated temperature from about 5 to about 95 mole % of a charge comprising at least one vinyl aromatic monomer to prepare a stabilized active polymer block (A), using a free radical polymerization process, wherein a stable free radical agent is employed during the polymerization, thereby preserving the stabilized active polymerization site at the terminus of the poly (vinyl aromatic) block (A); (b) adding at least one acrylic monomer and optionally, additional vinyl aromatic monomer, to the mixture of vinyl aromatic monomer and stabilized active polymer block of (a); and (c) further reacting the mixture of (b) using a free radical process to effect copolymerization of said monomers, thereby preparing a (vinyl aromatic-co-acrylate) block (B).Type: GrantFiled: November 21, 2000Date of Patent: March 11, 2003Assignee: The Lubrizol CorporationInventors: Daniel C. Visger, Richard M. Lange
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Patent number: 6525151Abstract: The present invention relates to a process for the preparation of grafted polymers wherein in a first step A) a stable nitroxyl radical is grafted onto a polymer, which step comprises heating a polymer and a stable nitroxyl radical (NO.); and in a second step B) the grafted polymer of step A) is heated in the presence of an ethylenically unsaturated monomer or oligomer to a temperature at which cleavage of the nitroxyl-polymer bond occurs and polymerization of the ethylenically unsaturated monomer or oligomer is initiated at the polymer radical; maintaining said temperature for further polymerization and afterwards cooling down the mixture to a temperature below 60° C. Further subjects are grafted polymers prepared by said process, the use of the polymeric radical initiator and the use of NO radicals for grafting polymers.Type: GrantFiled: March 1, 2001Date of Patent: February 25, 2003Assignee: Ciba Specialty Chemicals CorporationInventors: Michael Roth, Rudolf Pfaendner
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Patent number: 6521710Abstract: The present invention relates to a process for the preparation of a grafted polymer wherein in a first step A) a stable nitroxyl radical is grafted onto a polymer, which step comprises heating a polymer and a nitroxyl-ether containing a group (=NO-X), wherein X is selected such, that cleavage of the O-X bond occurs and a radical X, is formed at about the melting temperature of the polymer; and in a second step B) the grafted polymer of step A) is heated in the presence of an ethylenically unsaturated monomer or oligomer to a temperature at which cleavage of the nitroxyl-polymer bond occurs and polymerization of the ethylenically unsaturated monomer or oligomer is initiated at the polymer radical; maintaining said temperature for further polymerization and afterwards cooling down the mixture to a temperature below 60° C.Type: GrantFiled: March 1, 2001Date of Patent: February 18, 2003Assignee: Ciba Specialty Chemicals CorporationInventors: Michael Roth, Rudolf Pfaendner, Peter Nesvadba
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Publication number: 20030013815Abstract: A process is provided to prepare elastomer modified polymer compositions based on styrenic monomer(s) using certain organic peroxide initiators to increase both rubber particle size and rubber phase volume fraction (gel content).Type: ApplicationFiled: August 5, 2002Publication date: January 16, 2003Applicant: ATOFINA Chemicals, Inc.Inventor: Jerome Wicher
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Patent number: 6506847Abstract: The molecular weight of a graft copolymer is reduced by carrying out the following steps in a non-oxidizing atmosphere: (1) treating a propylene polymer material with an organic compound that is a free radical polymerization initiator, (2) treating the propylene polymer material with about 2 to about 240 parts per hundred parts of the propylene polymer material, of at least one vinyl-substituted grafting monomer in the presence of about 0.5% to about 5% of a polymerizable chain transfer agent that is a derivative of allyl alcohol, and (3) removing any unreacted monomer, decomposing any unreacted initiator, and deactivating any residual free radicals in the material.Type: GrantFiled: August 8, 2001Date of Patent: January 14, 2003Assignee: Basell Poliolefine Italia S.p.A.Inventor: Cheng Q. Song
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Patent number: 6500902Abstract: A fitting composition capable of fitting a body-worn tool to be used in contact with skin, such as spectacles, a hearing aid, and an artificial limb, suitably to the body shape of individual wearer and thereby realizing the function of the body-worn tool in a steady state, as well as providing an excellent wear-feeling, a body-worn tool produced using the same, and a method of producing the same. The fitting composition for body-worn tools to be used in contact with skin including (a) a thermoplastic block copolymer having at least one polymer block (A) mainly composed of an aromatic vinyl compound and at least one elastic polymer block (B); (b) a (meth)acrylic monomer; and (c) a polymerization initiator.Type: GrantFiled: June 21, 2001Date of Patent: December 31, 2002Assignees: Kuraray Co., Ltd., Japan Institute of Advanced DentistryInventors: Satoshi Yamaguchi, Junichi Yamauchi, Kenji Hatanaka, Mizuho Maeda, Eiichi Masuhara
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Patent number: 6492462Abstract: The rheological properties of a crosslinkable resin system are modified by the presence of a side chain crystalline (SCC) polymer (or a similar crystalline polymer which melts over a narrow temperature range). The polymer dissolves in the curable system at temperatures above the melting point of the crystalline polymer (Tp), but when the system is then cooled to a temperature below Tp, at least partially forms a separate phase in the curable system. Below Tp, this separate phase substantially increases the viscosity of the curable system (i.e. makes it thicker than the same system without the crystalline polymer). This is particularly valuable for sheet molding composites (SMCs) in which the increase in viscosity makes the composites less tacky, and for dry film resists (DFRs). Above Tp, the curable system containing the dissolved crystalline polymer has a viscosity which is substantially less than its viscosity below Tp.Type: GrantFiled: December 19, 2000Date of Patent: December 10, 2002Assignee: Landec CorporationInventors: Steven P. Bitler, David D. Taft, Ray F. Stewart
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Publication number: 20020183412Abstract: The invention relates to a process of crosslinking a polymer material with silane by means of heat, in which process a polymer, a grafting agent, an initiator and a crosslinking catalyst and optional additives are fed into an extruder and extruded to a homogenous mass by keeping the process temperature so low that the initiator used does not degrade during the extrusion and the optional additives do not react or degrade in the extruder, and, after the extrusion, the extruded mass is grafted and crosslinked. After the extrusion, the process of the invention comprises a step of heating the initiator, mixed homogenously with the polymer material, by means of infared radiation in a wavelength range absorbed by the initiator.Type: ApplicationFiled: April 29, 2002Publication date: December 5, 2002Applicant: MAILLEFER S.A..Inventors: Ali Harlin, Matti Sistola
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Publication number: 20020183456Abstract: Methods are disclosed for making graft copolymers. The methods comprise the steps of: (a) providing (i) an ethylene/propylene (EP) copolymer or other graftable polymer, (ii) an ethylenically unsaturated sulfur-, nitrogen- and/or oxygen-containing monomer, and (iii) an amount of an initiator sufficient to graft said monomer and EP copolymer or other graftable polymer, (b) introducing said EP copolymer or other graftable polymer into an extruder; (c) introducing said monomer into the extruder; (d) introducing said initiator into the extruder, wherein at least one of the above-identified reactants in (a) is introduced in the presence of a polar solvent; and (e) reacting said EP copolymer or other graftable polymer, monomer and initiator by operating said extruder, thereby forming the graft copolymer. This invention also relates to methods of making a dispersant viscosity index improver and methods for making a lubricating oil.Type: ApplicationFiled: March 11, 2002Publication date: December 5, 2002Applicant: Castrol LimitedInventors: Irwin L. Goldblatt, Richard P. Sauer
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Patent number: 6482897Abstract: A process for producing impact-resistant moulding compositions, which is characterised in that a monomer mixture comprising 90 to 20 parts by weight of an aromatic monoalkenyl compound, 10 to 50 parts by weight of an ethylenically unsaturated nitrile, 0 to 30 parts by weight of other copolymerisable compounds is polymerised by a radical mechanism in the presence of 15 to 50 parts by weight, per 100 parts by weight of monomers, of a soluble, gel-free butadiene polymer, and in the presence of 50 to 200 parts by weight, per 100 parts by weight of monomers, of a solvent, wherein the solvent is selected from the group comprising an aliphatic (C1-C8) or cycloaliphatic alcohol, ketone, ether, ester, nitrile (A) or mixtures thereof or a mixture of (A) with an aliphatic (C4-C10), cycloaliphatic or aromatic hydrocarbon (B) in an A:B weight ratio of 100:0 to 30:70, and the polymerisation is conducted as far as a polymer content of the total mixture of 30 to 70% by weight, with thorough mixing and optionally withType: GrantFiled: August 6, 1997Date of Patent: November 19, 2002Assignee: Bayer AktiengesellschaftInventors: Richard Weider, Gisbert Michels, Frank Wingler
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Patent number: 6476149Abstract: The melt of polyvinyl aromatic polymers comprising from 10 to 45 weight % of star branched polymer prepared using a combination of thermal and tetra functional peroxide initiation has an improved melt strength permitting better foam formation for extrusion foam blown with conventional blowing agents and inert gases including CO2.Type: GrantFiled: April 12, 2002Date of Patent: November 5, 2002Assignee: Nova Chemicals Inc.Inventor: Steven M. Krupinski
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Publication number: 20020161131Abstract: There is provided a process for producing an acid modified polypropylene resin, which comprises the step of kneading:Type: ApplicationFiled: January 14, 2002Publication date: October 31, 2002Applicant: SUMITOMO CHEMICAL COMPANY, LIMITEDInventors: Katsuhisa Kitano, Takashi Sanada
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Patent number: 6472082Abstract: A modified thermoplastic norbornene polymer obtained by graft-modifying a thermoplastic norbornene polymer selected from a ring-opening polymer of a norbornene monomer or a hydrogenated product thereof with at least one unsaturated compound selected from the group consisting of unsaturated epoxy compounds and unsaturated carboxylic compounds, and having a rate of graft modification of at least 10 mol % and a number average molecular weight (Mn) of 500 to 500,000, a production process thereof, and a crosslinking polymer composition comprising the modified thermoplastic norbornene polymer and a crosslinking agent.Type: GrantFiled: April 29, 1999Date of Patent: October 29, 2002Assignee: Nippon Zeon Co., Ltd.Inventor: Junji Kodemura
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Patent number: 6451948Abstract: The present invention is directed to radical-curable adhesive compositions which include a (meth)acrylate component; a thermal resistance-conferring component; and a radical cure-inducing composition. Reaction products of the compositions of this invention exhibit superior resistance of thermal degradation.Type: GrantFiled: August 19, 1999Date of Patent: September 17, 2002Assignee: Loctite CorporationInventors: John G. Woods, Susanne D. Morrill, Anthony F. Jacobine
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Patent number: 6437049Abstract: Process for the preparation of modified polypropylene which can be used as compatibilizing agent, consisting in reacting the polymer with maleic anhydride in the presence of dilaurylperoxide and in the absence of a solvent.Type: GrantFiled: February 27, 2001Date of Patent: August 20, 2002Assignee: P. Group S.r.l.Inventors: Vittorio Bortolon, Tonino Savadori
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Patent number: 6437043Abstract: The present invention discloses processes and apparatus for the efficient and rapid conversion of an elastomeric monomer to a polymerized elastomer, and conjointly, reaction of the resultant rubbery polymer into a monovinylaromatic polymerization reaction to form a rubber-modified polymer; and more specifically teaches a method of polymerizing butadiene and reacting it with styrene monomer to form a transparent rubber-modified impact-resistant polystyrene material exhibiting elastomer concentrations that range from as low as 6 weight percent or lower, to as high as about 50 percent.Type: GrantFiled: September 13, 2001Date of Patent: August 20, 2002Assignee: Fina Technology, Inc.Inventors: Jose M. Sosa, Billy J. Ellis
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Publication number: 20020111435Abstract: The invention relates to a process for the preparation of graft rubber polymers of the ABS type by emulsion polymerization according to the so-called fed batch process, in which latexes having markedly reduced residual monomer contents are obtained, and to compositions containing the mentioned graft rubber polymers.Type: ApplicationFiled: September 26, 2001Publication date: August 15, 2002Inventors: Hans-Erich Gasche, Herbert Eichenauer, Pierre Vanhoorne, Ulrich Jansen, Eckhard Wenz, Stefan Moss
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Patent number: 6433090Abstract: A thermoplastic vulcanizate prepared by a process comprising the steps of dynamically vulcanizing a vulcanizable rubber within a mixture that includes from about 15 to about 90 percent by weight of the rubber and from about 10 to about 85 percent by weight of a long-chain branched thermoplastic resin, where the long-chain branched thermoplastic resin is (i) an &agr;-olefin polymer, (ii) a copolymer of an &agr;-olefin and an &agr;-&ohgr;-olefin diene, or (iii) a mixture thereof, where the long-chain branched thermoplastic resin is characterized by a weight average molecular weight from about 100,000 to about 600,000, a number average molecular weight from about 40,000 to about 200,000, a z-average molecular weight from about 400,000 to about 2,000,000, a <g′>vis from about 0.2 to about 0.95, and a melt flow rate from about 0.3 to about 30 dg/min.Type: GrantFiled: January 26, 2001Date of Patent: August 13, 2002Assignee: Advanced Elastomer Systems, L.P.Inventors: Maria D. Ellul, Abdelhadi Sahnoune
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Publication number: 20020107349Abstract: The present invention is directed to radical-curable adhesive compositions which include a (meth)acrylate component; a thermal resistance-conferring component; and a radical cure-inducing composition. Reaction products of the compositions of the compositions of this invention exhibit superior resistance to thermal degradation.Type: ApplicationFiled: August 19, 1999Publication date: August 8, 2002Inventors: JOHN G. WOODS, SUSANNE D. MORRILL, ANTHONY F. JACOBINE
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Publication number: 20020103303Abstract: A modified thermoplastic norbornene polymer obtained by graft-modifying a thermoplastic norbornene polymer selected from a ring-opening polymer of a norbornene monomer or a hydrogenated product thereof with at least one unsaturated compound selected from the group consisting of unsaturated epoxy compounds and unsaturated carboxylic compounds, and having a rate of graft modification of at least 10 mol % and a number average molecular weight (Mn) of 500 to 500,000, a production process thereof, and a crosslinking polymer composition comprising the modified thermoplastic norbornene polymer and a crosslinking agent.Type: ApplicationFiled: April 29, 1999Publication date: August 1, 2002Inventor: JUNJI KODEMURA
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Publication number: 20020099144Abstract: A process is disclosed for improving the environmental stress crack resistance and other desirable properties of impact-resistant, elastomer-modified monovinylaromatic compounds, said process utilizing a combination of polymerization initiators, including perketals and peroxycarbonates.Type: ApplicationFiled: January 17, 2002Publication date: July 25, 2002Inventors: Jianbo Li, Jose M. Sosa, Aron Griffith
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Publication number: 20020099145Abstract: Safety glass interlayers are prepared from a composition comprising:Type: ApplicationFiled: September 21, 2001Publication date: July 25, 2002Inventors: Henry G. Heck, Douglas P. Waszeciak
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Publication number: 20020086948Abstract: This invention relates to a graft polyolefin which is obtained by a method comprising the steps of: (a) dissolving or dispersing, in an organic solvent, an acid anhydride-modified amorphous polyolefin which comprises propylene and butene as polymerizable components, thereby preparing its solution or dispersion; (b) adding a hydroxyl group-containing radical polymerizable monomer to the solution or dispersion, and allowing the acid anhydride-modified polyolefin to react with the hydroxyl group-containing radical polymerizable monomer; and (c) effecting graft polymerization by adding at least one radical polymerizable monomer and a radical initiator. This invention also relates to a resin coating composition which contains this graft polyolefin as a solid content.Type: ApplicationFiled: September 6, 2001Publication date: July 4, 2002Inventors: Takafumi Masuda, Shingo Tokimoto, Shoji Maekawa
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Patent number: 6413464Abstract: Provided are a rubber composition for injection molding with which it is possible to prevent scorching by ensuring the fluidity of the rubber composition needed for injection molding to suppress a temperature rise of the composition in an injection cylinder, without impairing the performance characteristics of a vulcanized product, as well as a golf ball using the rubber composition and its producing method. The rubber composition for injection molding includes a diene rubber, a crosslinking agent, an &agr;, &bgr;-unsaturated carboxylic acid and/or metal salt thereof, and &agr;, &bgr;-unsaturated carboxylic alkylester. The ratio of the total amount of the unsaturated carboxylic acid and the metal salt to the content of the alkylester ranges from 1.0 to 12.Type: GrantFiled: November 4, 1999Date of Patent: July 2, 2002Assignee: Sumitomo Rubber Industries, LimitedInventor: Hiroaki Tanaka
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Patent number: 6410652Abstract: Methods for making graft copolymers include (a) providing (i) an ethylene/propylene 9EP) copolymer or other graftable polymer, (ii) an ethylenically unsaturated sulfur-, nitrogen- and/or oxygen-containing monomer, and (iii) an amount of an initiator sufficient to graft said monomer and EP copolymer or other graftable polymer, (b) introducing the EP copolymer or other graftable polymer into an extruder, (c) introducing the monomer into the extruder, (d) introducing the initiator into the extruder, wherein at least one of the reactants employed in step (a) is introduced in the presence of a polar solvent, and (e) reacting the EP copolymer or other graftable polymer, monomer and initiator by operating the extruder, thereby forming the graft copolymer. Methods of making dispersant viscosity index improver and methods for making a lubricating oil, as well as graft copolymers, viscosity index improvers and lubricating oils made by such methods are also contemplated.Type: GrantFiled: April 6, 2000Date of Patent: June 25, 2002Assignee: Castrol LimitedInventors: Irwin L. Goldblatt, Richard P Sauer
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Patent number: 6380316Abstract: A copolymer of isobutylene with 0.5 to 15 mole percent of a conjugated diene (i.e., a butyl rubber) is reacted with a silane having both an alkenyl group as well as at least two silicon-bonded hydrolyzable group, the reaction taking place in the presence of a free-radical generator, to provide a modified copolymer having reactive silyl groups grafted thereto. The modified copolymer exhibits a reduced molecular weight relative to the starting copolymer and may be used to formulate moisture-curable sealants, caulks, adhesive and coatings.Type: GrantFiled: March 2, 1999Date of Patent: April 30, 2002Assignees: Dow Corning Corporation, ExxonMobil Chemical Patents Inc.Inventors: Maneesh Bahadur, David Yen-Lung Chung, Toshio Suzuki, Raymond Lee Tabler, Hsien-Chang Wang
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Patent number: 6380320Abstract: There is provided a process for improving the color of anhydride-grafted polymers. The process includes the steps of admixing in an extruder a polyolefin, a free radical initiator, and an anhydride-providing monomer at a temperature above the melting point of the polyolefin, adding an effective amount of an oxo-boron compound to the admixture; and extruding the resultant anhydride-grafted polymer into a shaped article.Type: GrantFiled: October 19, 2000Date of Patent: April 30, 2002Assignee: DuPont Canada Inc.Inventor: Chun Sing Wong
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Patent number: 6369162Abstract: A process for preparing a radial polymer comprising at least 3 polymeric arms and a central core comprising a polymerized di- or polyfunctional monomer, said process comprising the steps, (a) polymerizing at an elevated temperature, a charge comprising at least one free radical-polymerizable monomer to prepare a stabilized active polymer block (A) using a free radical polymerization process, wherein a stable free radical agent is employed during the polymerization, thereby preserving the stabilized active polymerization site at the terminus of the polymer; optionally (b) adding at least one additional free radical-polymerizable monomer, at least one of which is different from the monomers making up the first charge of monomers, to the stabilized active polymer block (A); and further reacting the mixture using a free radical process to effect copolymerization of said monomers, thereby preparing an A-B block copolymer having a stabilized active polymerization site at the terminus of the polymer; then (c) adType: GrantFiled: June 21, 2000Date of Patent: April 9, 2002Assignee: The Lubrizol CorporationInventors: Daniel C. Visger, Richard M. Lange
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Patent number: 6362280Abstract: An emulsible polyolefin wax having sufficient functionality to be emulsible in an aqueous medium, a melt viscosity of less than 1,000 cps at 190° C., and an emulsion light transmittance of at least 10% at 525 nm with a 20 mm light pathlength.Type: GrantFiled: April 27, 1998Date of Patent: March 26, 2002Assignee: Honeywell International Inc.Inventors: Charles F. Lences, Peter F. Romeo, Manfred Seven
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Publication number: 20020035211Abstract: A golf ball comprising a core and a cover layer wherein the cover is formed of a polyurethane composition comprising a prepolymer comprising a saturated diisocyanate and a curing agent, and an optical brightener.Type: ApplicationFiled: September 19, 2001Publication date: March 21, 2002Inventor: Shenshen Wu
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Publication number: 20020010267Abstract: Block copolymers are disclosed having at least one polymer segment characterized by a high degree of control over molecular weight, particle size, polydispersity and polymer composition and architecture. The block copolymers feature at least on polymer segment produced using a controlled free radical polymerization process in an emulsion. Additional polymer segments can be generated using the controlled free radical emulsion process or any other polymerization process. The block copolymers include polymers having unique structure, such as stars, grafts, telechelics and macromonomers. Block copolymers having hard/soft and amphiphilic characteristics are also disclosed. The block copolymers may also include adducts with nitroxide control agents capable of free radical re-initiation.Type: ApplicationFiled: July 2, 1999Publication date: January 24, 2002Applicant: Symyx Technologies, Inc., a Delaware corporationInventors: GERRIT KLAERNER, ADAM SAFIR, RALPH B. NIELSEN, BERND JANDELEIT, PETER HUEFNER
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Patent number: 6331595Abstract: A method for the grafting of a monomer onto a polyolefin in the presence of an organic peroxide is disclosed. The polyolefin is a polyolefin that, when molten, undergoes cross-linking in the presence of the organic peroxide. The method comprises: (a) admixing the polyolefin in an extruder with 25 to 6000 ppm, based on the weight of the polyolefin, of an organic peroxide coated onto a carrier polymer and up to 5%, by weight of the polyolefin, of a grafting monomer capable of being grafted onto the polyolefin in the presence of the organic peroxide. The admixture is heated to a temperature above the melting point of both the polyolefin and the carrier polymer under admixing conditions to effect grafting of said grafting monomer onto the polyolefin, said carrier polymer undergoing chain scission in preference to cross-linking in the presence of the organic peroxide at said temperature. Grafted polyolefin is extruded from the extruder.Type: GrantFiled: April 28, 1994Date of Patent: December 18, 2001Assignee: DuPont Canada Inc.Inventors: David John Mitchell, Peter Yates Kelly
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Publication number: 20010049418Abstract: The melt of polyvinyl aromatic polymers comprising from 10 to 45 weight % of star branched polymer prepared using a combination of thermal and tetra functional peroxide initiation has an improved melt strength permitting better foam formation for extrusion foam blown with conventional blowing agents and inert gases including CO2 and an improved tensile strength for oriented polystyrene (OPS) articles, e.g. blown film or extruded sheet.Type: ApplicationFiled: March 6, 2001Publication date: December 6, 2001Applicant: NOVA Chemicals Inc.Inventors: Steven M. Krupinski, Robert J. Gorka
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Publication number: 20010044497Abstract: Safety stabilized solid, free-flowing compositions based on t-butyl peroxy maleic acid as well as processes for their preparation and use are disclosed.Type: ApplicationFiled: March 13, 2001Publication date: November 22, 2001Inventor: Terry Ned Myers
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Patent number: 6313228Abstract: A process peroxidically treats olefin polymers with di-tert-butyl peroxide in an extruder. The olefin polymers together with di-tert-butyl peroxide under an inert gas are fed to an extruder. The olefin polymers are used in a finely divided form at from 55 to 110° C. The use of peroxidically treated olefin polymers for producing moldings, fibers, films or nonwoven spunbond fabrics is described, as is a process for producing moldings, fibers, films or nonwoven spunbond fabrics.Type: GrantFiled: November 17, 1999Date of Patent: November 6, 2001Assignee: Basell Polyolefine GmbHInventors: Karl Huber, Jürgen Schwind, Klaus Lehr, Hermann Elser, Horst Klassen, Karl-Heinz Kagerbauer
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Patent number: 6303704Abstract: Disclosed herein is a game ball and method for making the same. The game ball has a non-ionomeric cover which has been crosslinked by incorporating a dialkyl peroxide in the polymer mix prior to molding. The game ball cover is superior in at least one of cut resistance and scuff resistance to a conventional cover that does not have covalent crosslinks but is otherwise substantially identical in composition. The game ball cover of the invention is particularly useful for improving the durability of golf balls to be struck with sharp-grooved clubs. The peroxide may be omitted and the cover crosslinked using post formation irradiation.Type: GrantFiled: November 22, 1999Date of Patent: October 16, 2001Assignee: Spalding Sports Worldwide, Inc.Inventor: R. Dennis Nesbitt
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Patent number: 6294614Abstract: Modified polymers containing a poly(2-hydroxyethyl(meth)acrylate) chain as the hydrophilic polymer segment in which a hydrophobic polymer chain or a lipid residue of a sterol is bound to either end of the poly(2-hydroxyethyl(meth)acrylate) chain through a covalent bond or in which the poly(2-hydroxyethyl(meth)acrylate) chain is grafted onto the backbone chain at either end thereof. These modified polymers are excellent in compatibility with liquid or a living body, thus being advantageously usable particularly in medical fields.Type: GrantFiled: January 27, 1999Date of Patent: September 25, 2001Assignee: K. K. VayuInventors: Kazunori Kataoka, Masao Kato, Yukio Nagasaki, Hotaka Ito, Teiji Tsuruta, Yasuhisa Sakurai, Teruo Okano, Ken Suzuki
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Patent number: 6291617Abstract: Compositions for the polymer curing, comprising: a) one or more organic peroxides and b) 3,7-Dimethyl-1,3,6-Octatriene (OCIMENE).Type: GrantFiled: December 14, 1999Date of Patent: September 18, 2001Assignee: Elf Atochem Italia S.r.l.Inventors: Luciano Abrigo, Carla Beretta, Ezio Montessoro, Michele Merenda
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Publication number: 20010018496Abstract: A golf ball comprising a core and a cover layer wherein the cover is formed of a polyurethane composition comprising a saturated prepolymer comprising an initiated polycaprolactone and a saturated diisocyanate, and a curing agent.Type: ApplicationFiled: March 20, 2001Publication date: August 30, 2001Applicant: Acushnet CompanyInventor: Shenshen Wu
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Publication number: 20010016628Abstract: Structurally isomeric poly(alkyl ethylenes) with H and Y structures, polymeric bridging segments and a &PSgr; index of 2×10−3 to 8×10−3 (kJ/mole/degree), have decreased instability in the melt and more advantageous processing properties.Type: ApplicationFiled: January 27, 1997Publication date: August 23, 2001Inventors: MANFRED RAETZSCH, ACHIM HESSE, HARTMUT BUCKA, NORBERT REICHELT, ULF PANZER, KONRAD BUEHLER
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Patent number: 6262182Abstract: The invention enables solution modification of a polyolefin with an unsaturated anhydride, unsaturated acid, or unsaturated ester, with high efficiency without the formation of undesirable impurities resulting from the competing reaction of the solvent with the unsaturated anhydride, unsaturated acid, or unsaturated ester. The process entails combining a polyolefin; a solvent; an unsaturated anhydride, unsaturated acid or unsaturated ester and a free-radical initiator to form a reaction mixture. The solvent is selected from the group consisting of substituted aromatic solvents which do not contain benzylic hydrogens and mixtures thereof. This reaction mixture is reacted under suitable conditions to produce a modified polyolefin.Type: GrantFiled: March 14, 2000Date of Patent: July 17, 2001Assignee: Eastman Chemical Co., Ltd.Inventors: Robert Lee Eagan, Lisa Kay Templeton
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Patent number: 6252004Abstract: A process for preparing emulsion polymer particles comprising: (a) providing an aqueous emulsion of a multistage core-shell polymer with a hydrophilic core, (b) adding one or more inhibitors to substantially stop any polymerization, (c) adding monomer to the emulsion polymer, (d) adding swelling agent and (e) reducing the level of monomer by at least fifty percent. The process produces multistage polymers having low dry-bulk density useful in coating compositions such paints and paper coatings.Type: GrantFiled: October 14, 1999Date of Patent: June 26, 2001Assignee: Rohm and Haas CompanyInventors: Robert Mitchell Blankenship, James Keith Bardman
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Patent number: 6242525Abstract: Thermoplastic elastomers of high strength, high elasticity and good dyeability, the incorporated elastomeric particles of which have an average particle diameter of 0.05 to 5 &mgr;m, from propylene homopolymers and/or propylene copolymers, elastomeric C2 to C8 olefin copolymers and/or terpolymers and multifunctional, unsaturated monomers are formed by a method, for which mixtures of propylene homopolymers and/or propylene copolymers, elastomeric C2 to C8 olefin copolymers and/or terpolymers and readily volatile C4 to C7 dienes are reacted in the melt. The thermoplastic elastomers, as well as mixtures with conventional polyolefins, are suitable for use in the vehicle industry, in the domestic appliances industry, in the building sector and in medical technology.Type: GrantFiled: November 5, 1998Date of Patent: June 5, 2001Assignee: Borealis GmbHInventors: Manfred Raetzsch, Achim Hesse, Norbert Reichelt, Hartmut Bucka, Hermann Heinemann, Matthias Stolp, Hans-Joachim Radusch
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Patent number: 6239226Abstract: A block copolymer obtainable by reacting A) monomers selected from the group consisting of styrene, &agr;-methylstyrene, acrylonitrile, methacrylonitrile, methyl methacrylate and maleic anhydride to form blocks A having a glass transition temperature Tg of more than 0° C. and B) monomers selected from the group consisting of n-butyl acrylate, methyl acrylate and 2-ethylhexyl acrylate to form blocks B having a glass transition temperature Tg of less than 0° C. at from 100 to 160° C. in the presence of free-radical initiators and N-oxyl radicals.Type: GrantFiled: July 15, 1998Date of Patent: May 29, 2001Assignee: BASF AktiengesellshcaftInventors: Michael Fischer, Jürgen Koch
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Patent number: 6228942Abstract: Grafting a polymer at the surface of a carbonated material containing carboxyl amine and/or hydroxyl functions at its surface. This material is suspended in a solution comprising the polymer to be grafted, which includes a carboxyl amine and/or hydroxyl function, the solution also comprising a solvent of the polymer. This is followed by a treatment causing dehydration into a carboxyl function, an amide and/or hydroxyl function and the polymer is thus grafted on the carbonated material by means of ester or amide bonds. Utilization in the cathode or anode of an electrochemical generator, in a polymer material with low polarity, in an ink, and as a conductive deposit on flexible plastic used as electrical contact, electromagnetic protection and antistatic protection.Type: GrantFiled: December 2, 1998Date of Patent: May 8, 2001Assignees: Hydro-Quebec, Centre National de la Recherche ScientifiqueInventors: Christophe Michot, Michel Armand, Michel Gauthier, Yves Choquette
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Patent number: 6218476Abstract: A novel process for preparing functionalized polypropylenes entailing apportioned introduction of free radical initiator is described. Also described are novel functionalized polypropylenes having a yellowness index color of at least 77 and a Brookfield Thermosel viscosity of greater than 7000 cP at 190° C. Preferably, the functionalized polypropylenes are further characterized by having an acid number greater than 6 milligrams of KOH per gram of polymer.Type: GrantFiled: March 3, 1999Date of Patent: April 17, 2001Assignee: Eastman Chemical CompanyInventor: Stephen Wayne Coe
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Patent number: 6207776Abstract: Compositions for curing polymers comprising one or more organic peroxides and trans-stilbene.Type: GrantFiled: April 19, 1999Date of Patent: March 27, 2001Assignee: Elf Atochem Italia S.r.l.Inventors: Luciano Abrigo, Carla Beretta, Ezio Montessoro, Michele Merenda
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Patent number: 6191230Abstract: A masterbatch composition comprising: (a) a copolymer of ethylene and 1-octene prepared with a metallocene catalyst; (b) as a scorch inhibitor, a substituted hydroquinone; 4,4′-thiobis(2-methyl-6-t-butylphenol); 4,4′-thiobis(2-t-butyl-5-methylphenol); or mixtures thereof; (c) as a cure booster, triallyl trimellitate; 3,9-divinyl-2,4,8,10-tetra-oxaspiro[5.5]undecane; triallylcyanurate; triallyl isocyanurate; or mixtures thereof; and (d) an organic peroxide.Type: GrantFiled: July 22, 1999Date of Patent: February 20, 2001Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: Michael John Keogh, Jinder Jow