Patents Issued in April 1, 2003
  • Patent number: 6541548
    Abstract: There is provided an aromatic polycarbonate resin composition which exhibits high flame retardancy without sacrificing melt-molding stability or melt fluidity when molding the resin composition. The flame retardant aromatic polycarbonate resin composition comprises a resin component (a) comprising an aromatic polycarbonate and optionally a styrene polymer, the resin composition having an aromatic polycarbonate content of 20% by weight or more; and 0.1 to 50 parts by weight of an organopolysiloxane (b) comprising a linear organopolysiloxane (b)i and a cyclic organopolysiloxane (b)ii, component (b)ii present in an amount of from 5 to 95% by weight based on the total weight of components (b)i and (b)ii.
    Type: Grant
    Filed: August 2, 2001
    Date of Patent: April 1, 2003
    Assignees: Wacker-Chemie GmbH, Asahi Kasei Kabushiki Kaisha
    Inventors: Richard Weidner, Hiroji Oda
  • Patent number: 6541549
    Abstract: A non-xenoestrogenic phosphorus-containing stabilizer for organic materials is disclosed wherein the stabilizer is selected from the group consisting of phosphorus-containing compounds of the structures wherein y in an integer of from 6 to 20, and where Z is a linking group, m is 0 or 1, n is an integer of at least 2, the asterisks are independently selected terminal groups, R1, R2, R3, R4, R5, R6, R7, and R8 are independently selected from the group consisting of hydrogen, alkyl groups, aralkyl groups, or halogen groups and Q is selected from the group consisting of where R11 is alkyl or aralkyl, and
    Type: Grant
    Filed: November 1, 1999
    Date of Patent: April 1, 2003
    Assignee: Crompton Corporation
    Inventors: Scott R. Archibald, Tracy L. Coffin-Werner
  • Patent number: 6541550
    Abstract: The invention provides low temperature thermally activatable water-dispersed adhesive compositions and adhesives made from the compositions by removing water. The adhesive compositions of the invention comprise a mixture of low modulus crystallizing polyester polyurethane, acrylic ester copolymer, one or more hydrophobically-modified associative polyurethanes, and a stabilizer system comprising a combination of carbodiimide and branched primary amino alcohol.
    Type: Grant
    Filed: April 5, 2000
    Date of Patent: April 1, 2003
    Assignee: 3M Innovative Properties Company
    Inventors: Arianne E. McCarthy, Terry J. Rayner
  • Patent number: 6541551
    Abstract: A vulcanizable rubber composition and method for making the same are disclosed. The rubber composition comprises a rubber component mixed with a methylene donor and methylene acceptor; the methylene acceptor is 3-hydroxydiphenylamine.
    Type: Grant
    Filed: December 21, 2000
    Date of Patent: April 1, 2003
    Assignee: Indspec Chemical Corporation
    Inventors: Raj B. Durairaj, Alex Peterson, Jr.
  • Patent number: 6541552
    Abstract: To provide the aqueous-dispersing composition of synthetic resin which is excellent in stain-proofing property, weather resistance and storage stability and is capable of forming a coating film having a high gloss. The aqueous-dispersing composition of synthetic resin comprises an aqueous dispersion of synthetic resin and a condensate of tetrafunctional silicate compound represented by the formula (I): wherein R comprises R1 (R1 is methyl and/or ethyl) and R2 (R2 is at least one linear or branched alkyl group having 3 to 10 carbon atoms), n is 2 to 15, and contains the condensate of tetrafunctional silicate compound in an amount of 1 to 100 parts by weight on the basis of 100 parts by weight of solid content in the aqueous dispersion of synthetic resin.
    Type: Grant
    Filed: May 16, 2000
    Date of Patent: April 1, 2003
    Assignee: Daikin Industries, Ltd.
    Inventors: Nobuhiko Tsuda, Katsuhiko Imoto, Nobuo Mitsuhata, Masaru Nagato
  • Patent number: 6541553
    Abstract: This invention relates to curable strippable adhesive and coating films, and also to improved high performance pressure sensitive adhesives. The adhesive comprises: (a) from 10 to 90 percent by weight of a crosslinkable epoxidized diene polymer, (b) from 0 to 70 percent by weight of a diene mono-ol polymer, with the condition that the mono-ol polymer not exceed three times the weight of the epoxidized polymer, (c) from 5 to 40 weight percent of a block copolymer of a vinyl aromatic hydrocarbon and a diene having, on average, more than one vinyl aromatic hydrocarbon block per molecule, and wherein the block copolymer can be functionalized by grafting onto it from 0.1 to 5% by weight of a carboxylic acid or anhydride, preferably maleic anhydride, (d) from 0 to 65% percent by weight of a tackifying resin, and (e) from 0.01 to 3 percent by weight of a photoinitiator.
    Type: Grant
    Filed: October 17, 2000
    Date of Patent: April 1, 2003
    Assignee: Kraton Polymers U.S. LLC
    Inventors: James Robert Erickson, David Romme Hansen
  • Patent number: 6541554
    Abstract: This invention relates to improvements in preventing heat- and moisture-shrink problems in specific polypropylene fibers. Such fibers require the presence of certain compounds that quickly and effectively provide rigidity to the target polypropylene fiber after heat-setting. Generally, these compounds include any structure that nucleates polymer crystals within the target polypropylene after exposure to sufficient heat to melt the initial pelletized polymer and upon allowing such a melt to cool. The compounds must nucleate polymer crystals at a higher temperature than the target polypropylene without the nucleating agent during cooling. In such a manner, the “rigidifying” nucleator compounds provide nucleation sites for polypropylene crystal growth. After drawing the nucleated composition into fiber form, the fiber is then exposed to sufficient heat to grow the crystalline network, thus holding the fiber in a desired position.
    Type: Grant
    Filed: May 17, 2001
    Date of Patent: April 1, 2003
    Assignee: Milliken & Company
    Inventors: Brian G. Morin, Nathan A. Mehl, William S. Parks
  • Patent number: 6541555
    Abstract: High density, low epsilon ballast materials are disclosed. The materials comprise dielectric ceramic particles in a polymeric matrix. The composite material possesses higher density/dielectric ratios in comparison with conventional ballast materials.
    Type: Grant
    Filed: December 20, 1999
    Date of Patent: April 1, 2003
    Assignee: Lockheed Martin Corporation
    Inventor: Kirk T. Roetcisoender
  • Patent number: 6541556
    Abstract: A coating composition for the linerboard of corrugated paperboard provides water and grease resistance but is water vapor permeable, and thus permits a different mode of manufacture of corrugated paperboard when aqueous adhesives are employed in the assembly of the linerboards and corrugated medium; in particular the linerboards may be coated with the coating composition prior to assembly of the corrugated paperboard because the water vapor permeable coating permits escape of the water of the aqueous adhesive, during drying of the assembled components of the corrugated paperboard; the coating composition employs a styrene-acrylate copolymer and a C14-C18 fatty acid complex of a metal ion having an oxidation state of at least 3, such as chromium.
    Type: Grant
    Filed: September 14, 2000
    Date of Patent: April 1, 2003
    Assignee: Le Groupe Recherche I.D. Inc.
    Inventor: Serge Berube
  • Patent number: 6541557
    Abstract: A resin composite material which allows a polymer phase structure to be controlled is provided. The material comprises a particle 1 having a surface area of not less than 50 m2/g and two or more polymers 21 and 22 or a copolymer comprising two or more segments. The polymers or the copolymer form a phase structure 5 having an unit thickness (t) of 1 to 1000 nm and which is laminated on the surface of the particle. It is preferred that the particle has a needle-like, sheet-like, spherical or cylindrical shape and that the copolymer is a block copolymer or a graft copolymer comprising two or more segments.
    Type: Grant
    Filed: March 22, 2000
    Date of Patent: April 1, 2003
    Assignee: Kabushiki Kaisha Toyota Chuo Kenkyusho
    Inventors: Naoki Hasegawa, Arimitsu Usuki
  • Patent number: 6541558
    Abstract: A composition of matter formed by melt-blending certain thermoplastic polymers and from about 1.0 to about 7.5 wt. % of a fluorocarbon additive, the additive having a lower by surface energy than that of the polymer; the blending resulting in a cooled admixture having a concentration of fluorocarbon additive through a cross-section of the solid composition lower in the interior thereof and higher at the surfaces thereof.
    Type: Grant
    Filed: April 20, 2000
    Date of Patent: April 1, 2003
    Assignee: RES Development Corporation
    Inventors: Robert E. Sterling, Eugene P. Goldberg
  • Patent number: 6541559
    Abstract: A polyamide resin composition is provided, which has an excellent flowability upon molding and shows a high strength when subjected to various welding methods. The resin composition for use in molding comprises (A) 96 to 99.9% by weight of a crystalline polyamide resin and (B) 0.1 to 4% by weight of a non-crystalline, partially aromatic copolymerized polyamide resin containing at least two kinds of aromatic monomer components, with the total content of (A) and (B) being 100% by weight, or comprises (A), (B) and (C) 5 to 200 parts by weight of an inorganic filler per 100 parts by weight of sum of (A) and (B). The polyamide resin compositions show an excellent weld strength.
    Type: Grant
    Filed: May 11, 2001
    Date of Patent: April 1, 2003
    Assignee: UBE Industries, Ltd.
    Inventors: Ken Nakamura, Akio Miyamoto
  • Patent number: 6541560
    Abstract: Volatile organic compounds containing carbonyl groups can be released by lithographic printing materials including inks, fountain solutions and printed materials. Volatile organic compounds containing carbonyl groups can also have a serious negative impact on the taste or odor of staple materials such as foodstuffs. The volatile materials can be retained in the lithographic compositions and printed materials can be trapped in the printed materials using an improved reactive technology involving a chemically reactive trap for such volatile carbonyl containing compounds.
    Type: Grant
    Filed: March 15, 2000
    Date of Patent: April 1, 2003
    Assignees: Graphic Packaging Corporation, Cellresin Technologies, LLC
    Inventors: Boris Vasilyevich Rozynov, William J. Coyle, Willard E. Wood, Neil J. Beaverson
  • Patent number: 6541561
    Abstract: A method is disclosed of making a polymerizable printing ink which comprises mixing a powdered polymer with a liquid composition comprising at least one polymerizable monomer or oligomer, said oligomer or monomer being polymerizable and the powdered polymer being soluble in said liquid composition at elevated temperature.
    Type: Grant
    Filed: May 18, 2000
    Date of Patent: April 1, 2003
    Assignee: Trip Industries Holding, B.V.
    Inventor: Alan Lennox Lythgoe
  • Patent number: 6541562
    Abstract: An aqueous paint composition comprising: (i) an aqueous dispersion obtained by neutralizing with a neutralizing agent a hydrolytic condensation reaction product of (a) 100 parts by weight of an organosilane of the formula (1) R1nSi(OR2)4-n, wherein R1 is a C1-8 organic group, R2 is a C1-5 alkyl group, and n is 1 or 2, and/or its partially hydrolyzed condensate, with (b) from 5 to 200 parts by weight of a silyl group-containing vinyl resin having hydrolyzable silyl groups or silyl groups having silicon atoms bonded to hydroxyl groups and having an acid value of from 20 to 150 mgKOH/g, and adding water thereto, (ii) an amino group-containing alkoxysilane compound, and (iii) an epoxy group-containing compound.
    Type: Grant
    Filed: October 3, 2000
    Date of Patent: April 1, 2003
    Assignee: Dai Nippon Toryo Co., Ltd.
    Inventors: Ryuichi Aoki, Tadashi Hatakeyama, Hiroharu Sasaki, Kazuyoshi Tsuneta
  • Patent number: 6541563
    Abstract: The invention concerns a method for producing fluoroalkyl-functionalized hybrid polymer coatings with low surface energy and low tendency to become soiled. Organically modified silanes, metal compounds of formula AlR3 or MR4 and at least partially fluorinated organic modified silane serve as components of the coating composition.
    Type: Grant
    Filed: October 4, 2001
    Date of Patent: April 1, 2003
    Assignee: Fraunhofer-Gesellschaft zur Forderung der angewandten Forschung e.V.
    Inventors: Johanna Kron, Karl Deichmann, Gerhard Schottner
  • Patent number: 6541564
    Abstract: In a process for the metal-catalyzed preparation of copolymers of carbon monoxide and an olefinically unsaturated compound having from 2 to 20 carbon atoms in an aqueous medium, the copolymerization is carried out in the presence of a water-soluble macromolecular host compound which has a hydrophobic cavity and a hydrophilic shell.
    Type: Grant
    Filed: April 23, 2002
    Date of Patent: April 1, 2003
    Assignee: BASF Aktiengesellschaft
    Inventors: Markus Schmid, Reinhold J. Leyrer, Mubarik Mahmood Chowdhry, Marc Oliver Kristen
  • Patent number: 6541565
    Abstract: A system for delivering an active material includes (1) a stable, aqueous polymeric composition of (a) a water-soluble polymer having (b) in situ-formed, substantially water-insoluble resinous particles of said polymer substantially uniformly dispersed therein, and (c) water; and (2) an active material dispersed in said composition.
    Type: Grant
    Filed: June 15, 2001
    Date of Patent: April 1, 2003
    Assignee: ISP Investments Inc.
    Inventors: David K. Hood, Stephen L. Kopolow, Michael Tallon, Yoon Tae Kwak, Laurence Senak, Drupesh Patel, John Mc Kittrick
  • Patent number: 6541566
    Abstract: A pressure sensitive adhesive which is prepared by emulsion polymerizing an ethylenically unsaturated monomer and 0.01 to 2 pphm of a sterically hindered alkoxylated silane monomer. The silane crosslinks during film formation to provide the adhesive with increased shear strength without the disadvantage of decreased loop tack. The sterically hindered alkoxylated silane monomer has the structure R1—Si—(OR2)n(R3)3−n wherein R1 is selected from the group consisting of an alkylene, arylene, and aralkylene group; R2 is independently a sterically hindered alkyl group having 3 to 10 carbon atoms in a straight or branched chain configuration; R3 is a monovalent alkyl group having 1 to 10 carbon atoms; and n is an integer of from 1 to 3.
    Type: Grant
    Filed: October 5, 1998
    Date of Patent: April 1, 2003
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Rajeev Farwaha, Douglas N. Boutillier, Lien Phan, Patrick J. Hayes, Arnold S. Baird
  • Patent number: 6541567
    Abstract: To provide a coating composition for forming an ink-receiving layer which is satisfactory in the fixability and water resistance of inks in ink-jet printing and is excellent in transparency and clearness of recorded images.
    Type: Grant
    Filed: December 21, 1999
    Date of Patent: April 1, 2003
    Assignee: Takamatsu Oil & Fat Co., Ltd.
    Inventors: Shuichiro Riku, Masaru Nakatani, Hayato Nishita, Sakae Murata
  • Patent number: 6541568
    Abstract: Thermoplastic polymer blends and formed articles made thereof which exhibit superior physical properties such as a combination of excellent scratch resistance, rigidity and impact toughness. The thermoplastic polyolefin blend includes from about 40 percent to about 80 percent of a base component of propylene-containing polymer; from about 5 percent to about 30 percent of a toughening component; and from about 3 percent to about 40 percent of a thermoplastic elastomer, preferably of a high styrene containing block or random copolymer. A preferred thermoplastic polyolefin blend includes between about 50 percent to about 70 percent of the base component; between about 10 percent to about 20 percent of the toughening component; and between about 5 percent to about 20 percent of the styrene block copolymer. Advantageously, the thermoplastic elastomer has greater than 50 percent by weight styrene monomer.
    Type: Grant
    Filed: June 1, 2000
    Date of Patent: April 1, 2003
    Assignee: Solvay Engineered Polymers
    Inventors: Ruidong Ding, Satchit Srinivasan, Edmund K. Lau
  • Patent number: 6541569
    Abstract: A polymer alloy and method of making same comprising a block copolymer thermoplastic elastomer comprising a microscopic porosity rapidly plasticized by environmental contaminants and a binder of a polymer or copolymer, the binder binding block copolymer particles while preserving the microscopic porosity and providing a macroscopic porosity to allow fluid penetration. The block copolymer preferably comprises styrene-butadiene-styrene (SBS) triblock copolymer, styrene-butadiene (SB) diblock copolymer, or styrene-isoprene-styrene (SIS) triblock copolymer, or a combination thereof, and the binder preferably comprises styrene-ethylene-butadiene (SEB) terpolymer, ethylene-propylene-diene monomer (EPDM) terpolymer, ethylene-propylene (EPR) copolymer, or styrene-butene butadiene (SBB) terpolymer, or a combination thereof. Most preferably the block copolymer comprises styrene-butadiene-styrene (SBS) triblock copolymer and the binder comprises ethylene-propylene-diene monomer (EPDM) terpolymer.
    Type: Grant
    Filed: April 7, 1998
    Date of Patent: April 1, 2003
    Assignee: Abtech Industries, Inc.
    Inventors: James F. Morris, Stephen C. Stelpstra
  • Patent number: 6541570
    Abstract: Semicrystalline polyolefin composition comprising copolymers a), b) and c) of prolylene with at least one comonomer selected from C4-C10&agr;-olefins, where the total content of recurring units from the said comonomer, referred to the composition, is equal to or higher than 6% and teh respective percentages representing the content of said recurring units in each one of the copolymers a), b) and c) are different from each other, said difference being of at least 1 unit.
    Type: Grant
    Filed: August 13, 2001
    Date of Patent: April 1, 2003
    Assignee: Basell Poliolefine Italia S.p.A.
    Inventors: Enrico Beccarini, Anteo Pelliconi
  • Patent number: 6541571
    Abstract: A process for compatibilizing at least two mutually incompatible polymers, and a blended resins thereof, wherein said process comprises: (i) adding to at least one of the polymers an effective amount of a compatibilizing dispersant, wherein said dispersant is the polymerization reaction product of a mixture of monomers consisting essentially of: (a) from about 10% to about 40% by weight styrene; and (b) from about 10% to about 55% by weight of at least one alkyl methacrylate monomer having 1 to 8 carbon atoms in the alkyl group; and (c) from about 10% to about 55% by weight of at least one alkyl methacrylate monomer having greater than 8 carbon atoms in the alkyl group; and (d) from about 5% to about 25% by weight of at least one alkyl acrylate monomer having from 1 to 18 carbon atoms in the alkyl group; and (e) from about 7% to about 25% by weight of at least one hydroxy-functional ethylenically unsaturated monomer having a molecular weight of less than 2000; and (f) from about 0.
    Type: Grant
    Filed: August 1, 2001
    Date of Patent: April 1, 2003
    Assignee: The Sherwin-Williams Company
    Inventor: Gautam S. Haldankar
  • Patent number: 6541572
    Abstract: Disclosed is a two-step method of making soft, high refractive index, acrylic ophthalmic device materials. In the first step, a copolymer containing pendant oxirane groups is formed by copolymerizing one or more aryl acrylic hydrophobic monomers with one or more compounds of the formula wherein X is H or CH3; and n is 1-4. In the second step, the copolymer containing pendant oxirane groups formed in the first step is reacted with a compound of the formula W—T—H wherein W is H, CH3(CH2)a, or Z(OCH2CH2)b; a is 0-3; b is 1-5; Z is H, or CH3(CH2)p; p is 0-3; and T is O, NH, S; provided that if T≠O, then W≠H.
    Type: Grant
    Filed: September 17, 2001
    Date of Patent: April 1, 2003
    Assignee: Alcon Manufacturing, Ltd.
    Inventor: Albert R. LeBoeuf
  • Patent number: 6541573
    Abstract: A process for the elimination of formamide from polymers containing N-vinylformamide units involves treating formamide-containing polymers with from 1 to 2 mol-equivalents of an acid or a base, based on 1 mol-equivalent of formamide, under reaction conditions such that the N-vinylformamide units in the polymer undergo virtually no hydrolysis.
    Type: Grant
    Filed: February 7, 2001
    Date of Patent: April 1, 2003
    Assignee: BASF Aktiengesellschaft
    Inventors: Manfred Niessner, Martin Rübenacker, Norbert Mahr
  • Patent number: 6541574
    Abstract: A core is enveloped by a cover with trans 1,4-polyisoprene as the main component, including a super accelerator formed of dithiocarbamate and/or xanthate, and vulcanized at a temperature lower than the melting point of trans 1,4-polyisoprene to provide a golf ball having high impact resilience and spinning performance. Also, a core is enveloped by an inner layer cover having trans 1,4-polyisoprene as the main component, including a super accelerator formed of dithiocarbamate and/or xanthate, and the inner layer cover is surrounded by an outer layer cover with trans 1,4-polyisoprene as the main component, including a super accelerator of an amount larger than that in the inner layer cover to provide a golf ball having high impact resilience and spinning performance, and whose cover material is sufficiently anchored.
    Type: Grant
    Filed: May 19, 2000
    Date of Patent: April 1, 2003
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventors: Kohei Takemura, Kazuhisa Fushihara, Seigou Sakagami, Kaname Yamada
  • Patent number: 6541575
    Abstract: According to the present invention, provided is an industrially advantageous process for producing an epoxidized polymer, with safety and efficiency, wherein the epoxidation of a polymer having an olefinic carbon-carbon double bond is effected under the presence of substantially no alkali metal ion by adding an aqueous solution containing (i) ammonium tungstate and/or tungstophosphoric acid and (ii) phosphoric acid, in which the amount of (ii) phosphoric acid is not less than 0.25 moles relative to 1 gram atom of tungsten atom contained in the (i) ammonium tungstate and/or tungstophosphoric acid, and an aqueous hydrogen peroxide, separately to a solution of said polymer and a quaternary ammonium salt in an organic solvent immiscible with water.
    Type: Grant
    Filed: December 21, 2001
    Date of Patent: April 1, 2003
    Assignee: Kuraray Co., Ltd.
    Inventors: Taketoshi Okuno, Hideharu Iwasaki, Takuo Tsuruta
  • Patent number: 6541576
    Abstract: A catalyst curing system or hardener for resorcinolic resins, such as resorcinol-formaldehyde or phenol-resorcinol-formaldehyde resins including methylolurea. The methylolurea may be used in combination with oxazolidine in ratios ranging from 5:95 to 95:, by molar basis. The hardener crosslinks the resins which permits reduction or “fuming” of formaldehyde as well as control of gel times of the resulting adhesive. The hardener of the present invention if of particular utility in adhesives for use in the forest products industry.
    Type: Grant
    Filed: August 11, 1998
    Date of Patent: April 1, 2003
    Assignee: Borden Chemical, Inc.
    Inventors: Earl K. Phillips, Arthur J. Garwood, William D. Detlefsen
  • Patent number: 6541577
    Abstract: The instant invention provides carbamate functional polymers and/or oligomers and coating compositions containing such which have improved levels of nonvolatile solids yet demonstrate good sprayability and etch resistance. The carbamate functional polymers and/or oligomers of the invention comprise the polymerization reaction product of (a) a polymer or oligomer comprising a plurality of functional.
    Type: Grant
    Filed: December 6, 2000
    Date of Patent: April 1, 2003
    Assignee: BASF Corporation
    Inventors: Walter H Ohrbom, John W. Rehfuss
  • Patent number: 6541578
    Abstract: The space time yield of a gas phase reactor, particularly a polyethylene reactor may be increased by replacing at least 80 weight % of the ballast gas with a gas having a higher heat capacity than the ballast gas. Preferably the gas replacing the ballast gas is a stream of dilute ethylene having a high concentration of ethane.
    Type: Grant
    Filed: March 22, 2001
    Date of Patent: April 1, 2003
    Assignee: Nova Chemicals (International) S.A.
    Inventor: Fou Pon
  • Patent number: 6541579
    Abstract: An aqueous phase inhibitor for quenching free radical polymerization comprising a free radical quenching agent having a hydrophilic tail is disclosed, as well as a coating and related methods. In one embodiment, the free radical quenching agent can either be an N-hydroxylamine or an N-nitrosonamine, the hydrophilic tail can be a polyhydric alcohol tail and the inhibitor can be a concentrate in a liquid medium such as water, alcohol and mixture thereof.
    Type: Grant
    Filed: November 28, 2001
    Date of Patent: April 1, 2003
    Assignee: Sun Drilling Products Corporation
    Inventor: Robert Albright
  • Patent number: 6541580
    Abstract: A process for ATRP polymerization and coupling of molecules by radical processes is provided, wherein improvements are provided by selection of various ligands, counterions, transition metal compounds and/or zero oxidation state transition metals to give improved control over molecular weight, molecular weight distribution and compositions of the products formed.
    Type: Grant
    Filed: August 6, 1999
    Date of Patent: April 1, 2003
    Assignee: Carnegie Mellon University
    Inventors: Krzysztof Matyjaszewski, Scott G. Gaynor, Simion Coca
  • Patent number: 6541581
    Abstract: A polyethylene produced by the homopolymerisation of ethylene or copolymerisation of ethylene with &agr;-olefins in the presence of a catalyst, characterized in that the fraction of low molecular weight polymers having MW<5000 g/mole is lower than 12% by weight of the produced polymer, and that the produced polyethylene has a measured melt strength expressed by a haul-off (HO) value satisfying the expression: HO>K1·&eegr;0.05+K2, wherein K1 is 9.10−5 and K2 is 0.4.
    Type: Grant
    Filed: November 29, 2000
    Date of Patent: April 1, 2003
    Assignee: Borealis Technology Oy
    Inventors: Arild Follestad, Vidar Almquist, Espen Ommundsen, Tore Dreng
  • Patent number: 6541582
    Abstract: A solid catalyst component for the polymerization of olefins CH2═CHR, in which R is hydrogen or a hydrocarbon radical having 1-12 carbon atoms, the solid catalyst component including Mg, Ti, halogen and an electron donor selected from &bgr;-substituted glutarates other than diisopropyl &bgr;-methyl glutarate and which are not alpha-substituted. The catalyst component, when used in the polymerization of olefins, and in particular polypropylene, is capable of providing polymers in high yield and with a high isotactic index expressed in terms of high xylene insolubility.
    Type: Grant
    Filed: November 14, 2000
    Date of Patent: April 1, 2003
    Assignee: Basell Poliolefine Italia S.p.A.
    Inventors: Giampiero Morini, Giulio Balbontin
  • Patent number: 6541583
    Abstract: A propylene polymerization process is disclosed. The process gives polypropylene having isotactic and atactic stereoblock sequences. The process is performed in the presence of a non-bridged bisindenoindol-based single-site catalyst. The polypropylene produced has an isotactic pentad (mmmm) content within the range of about 10 mole % to about 70 mole %.
    Type: Grant
    Filed: May 17, 2001
    Date of Patent: April 1, 2003
    Assignee: Equistar Chemicals, LP
    Inventors: Craig C. Meverden, Sandor Nagy
  • Patent number: 6541584
    Abstract: A new class of bridged bis(tetrahydro-indenyl)metallocenes of formula (I), wherein M is Zr or Hf; X are monoanionic sigma ligands; (ZR1i)j is a divalent group bridging the two tetrahydro-indenyl residues; R2 and R3 are halogen, alkyl, cycloalkyl, aryl, alklyaryl or arylalkyl radicals; p is 0-3; i is 1 or 2; j is 1-4; m is 1-2; and n is 0-8. Furthermore, catalysts systems for olefin polymerization containing them are described.
    Type: Grant
    Filed: July 14, 2000
    Date of Patent: April 1, 2003
    Assignee: Basell Poliolefine Italia S.p.A.
    Inventor: Luigi Resconi
  • Patent number: 6541585
    Abstract: Polymers are produced using transition metal complexes that have sites capable of binding a Lewis acid in close proximity to the metal center.
    Type: Grant
    Filed: May 31, 2001
    Date of Patent: April 1, 2003
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Lynda Kaye Johnson, Alison Margaret Anne Bennett, Kerwin D. Dobbs, Alex Sergey Ionkin, Steven Dale Ittel, Ying Wang, Catherine E. Radzewich, Lin Wang, Elisabeth Hauptman
  • Patent number: 6541586
    Abstract: The invention relates to a method of forming carbon monoxide-containing polymers from multi-component syngas feeds and at least one vinyl comonomer. Feeds useful in the practice of the invention comprise ethylene in an amount ranging from about 5 to about 40 mole %, carbon monoxide is an amount ranging from about 1 to about 40 mole %, hydrogen in an amount ranging from about 4 to about 55 mole %, carbon dioxide in an amount ranging from about 3 to about 10 mole %, and methane in an amount ranging from about 4 to about 85 mole %. The feed may also include acetylene in an amount ranging up to about 10 mole %. The feed may contain at least one free radical-polymerizable vinyl comonomer, or a cofeed containing such a comonomer can be used.
    Type: Grant
    Filed: January 19, 1999
    Date of Patent: April 1, 2003
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Abhimanyu O. Patil, Donald N. Schulz, Raymond A. Cook, Michael G. Matturro
  • Patent number: 6541587
    Abstract: It is disclosed that a saccharide-derived monomer in which polymerizable functional group is introduced into hydroxyl group or other functional group contained in a saccharide or a saccharide derivative compound and cyanoethyl group is introduced into all of or a part of the remaining hydroxyl group or other functional group.
    Type: Grant
    Filed: August 18, 2000
    Date of Patent: April 1, 2003
    Assignee: Japan Exlan Company Limited
    Inventors: Ryosuke Nishida, Hiroshi Ono, Motoyasu Fukukawa
  • Patent number: 6541588
    Abstract: A tetrafluoroethylene/hexafluoropropylene copolymer with high drawability is provided. Also provided is a process employing the polymer and an article coated with the polymer.
    Type: Grant
    Filed: January 26, 2000
    Date of Patent: April 1, 2003
    Assignee: 3M Innovative Properties Company
    Inventors: Ralph Kaulbach, Albert Killich, Friedrich Kloos, Gernot Loehr, Ludwig Mayer, Erik Peters, Thomas J. Blong, Denis Duchesne
  • Patent number: 6541589
    Abstract: A polymerization process for producing a copolymer of tetrafluoroethylene and perfluorobutylethylene, prepared by an aqueous dispersion polymerization technique, and the resin produced thereby, are provided. This copolymer contains a relatively small amount, between about 0.02 weight percent and about 0.6 weight percent, of comonomer polymerization units. The copolymer is believed to be comprised of a core-shell structure wherein the polymerized comonomer units reside primarily within the core. The primary particle size of the copolymer ranges from 0.175 microns to and including 0.203 microns and the standard specific gravity is less than 2.143. This copolymer possesses a unique combination of very small particle size coupled with high molecular weight, a combination not heretofore achieved in tetra-fluoroethylene polymers of the dispersion or fine powder type.
    Type: Grant
    Filed: October 15, 2001
    Date of Patent: April 1, 2003
    Assignee: Gore Enterprise Holdings, Inc.
    Inventor: Richard L. Baillie
  • Patent number: 6541590
    Abstract: An emulsion-polymerized addition copolymer formed from a monomer mixture comprising ethylenically unsaturated monomers including from more than 4 to 15 wt % based on the weight of said mixture of at least one ethylenically unsaturated carboxylic acid functional monomer, and from 0.05 to 5 wt % based on the weight of said mixture of at least one polymerizable surfactant monomer comprising hydrophobic and hydrophilic functional groups, wherein said hydrophobic functional group comprises a polymerizable group within it, is useful as a binder in an ink jet ink having improved print quality.
    Type: Grant
    Filed: November 22, 2000
    Date of Patent: April 1, 2003
    Assignee: Rohm and Haas Company
    Inventors: Eric Alvin Johnson, Carl Michael Hesler, Robert David Solomon, Michael Paul Hallden-Abberton
  • Patent number: 6541591
    Abstract: A polymerizable composition that includes a monomer of the formula wherein X is hydrogen or one or more of methyl, chlorine, bromine or iodine, R1 is a straight or branched alkyl linking group of 2 to 12 carbon atoms, R2 is hydrogen or methyl, and n is 1 to 3; and a monomer of the formula wherein X1 and X2 are each independently hydrogen or one or more of methyl, chlorine, bromine or iodine, and R2 is hydrogen or methyl is described having a high index of refraction and being suitable for use in forming an optical product.
    Type: Grant
    Filed: December 21, 2000
    Date of Patent: April 1, 2003
    Assignee: 3M Innovative Properties Company
    Inventors: David B. Olson, Richard J. Pokorny, Bettie C. Fong
  • Patent number: 6541592
    Abstract: A thermoplastic elastomer composition comprising 5 to 95 wt % of the following (A) and 5 to 95 wt % of the following (B), wherein the flowability index I according to a test for flow properties with a capillary rheometer is 1.35 or more: (A) an ethylene-&agr;-olefin copolymer having a tensile stress M100 measured according to JIS-K-6251 of 2.5 MPa or less, (B) a polyolefin-based resin having a tensile stress M100 measured according to JIS-K-6251 of 2.5 MPa or more.
    Type: Grant
    Filed: August 9, 2000
    Date of Patent: April 1, 2003
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Katsunari Inagaki, Tadaaki Nishiyama
  • Patent number: 6541593
    Abstract: A process for producing a reactive silicon group-containing polyether oligomer, which comprises reacting (a) a polyether oligomer the backbone chain of which comprises a polyether and which contains in a side chain or at a terminus of its molecule at least one unsaturated group of the following general formula (1): H2C═C(R1)—R2—O—  (1) (wherein R1 represents a hydrocarbon group of not more than 10 carbon atoms; R2 represents a divalent organic group of 1 to 20 carbon atoms which contains in a side chain or at a terminus of its molecule at least one atomic species selected from the group consisting of hydrogen, oxygen and nitrogen as its constituent atom or atoms) or the general formula (2): HC(R1)═CH—R2—O—  (2) (wherein R1 represents a hydrocarbon group of not more than 10 carbon atoms; R2 represents a divalent organic group of 1 to 20 carbon atoms which contains at least one atomic species selected from the group consisting of hydrogen, ox
    Type: Grant
    Filed: June 14, 2000
    Date of Patent: April 1, 2003
    Assignee: Kaneka Corporation
    Inventors: Hideharu Jyono, Hidetoshi Odaka, Hiroshi Ando, Hiroshi Iwakiri, Hiroshi Ito, Fumio Kawakubo
  • Patent number: 6541594
    Abstract: The invention provides coating compositions comprising a reactive component (a) which is substantially free of any heteratoms and is a not a crystalline solid at room temperature and which comprises from (i) 12 to 72 carbon atoms, and (ii) at least two functional groups, and (b) a crosslinking agent comprising a plurality of functional groups (iii) reactive with the functional groups (ii) of compound (a), wherein functional groups (ii) and (iii) are selected such that reaction there between produces a thermally irreversible chemical linkage. The coating compositions of the invention provide improved solids, chip resistance, flexibility and/or scratch & mar resistance while maintaining desirable and/or improved performance characteristics with regard to environmental etch, relative humidity, QCT, chip resistance, thermoshock resistance, cold crack resistance, adhesion and the like.
    Type: Grant
    Filed: December 19, 2000
    Date of Patent: April 1, 2003
    Assignee: BASF Corporation
    Inventors: Walter H. Ohrbom, John A. Gilbert, Patricia A. Herrel, Marvin L. Green, Joanne Casale, Thomas G. Savino
  • Patent number: 6541595
    Abstract: The present invention relates to powder coating compositions which can be cured at low temperatures. The powder coating composition of the invention include a unique combination of a branched oligoester polyol and uretdione crosslinking agent which when cured results in a coating binder with desirable hardness, flexibility, solvent resistance, corrosion resistance, weatherability and gloss.
    Type: Grant
    Filed: May 29, 2001
    Date of Patent: April 1, 2003
    Assignee: McWhorter Technologies Inc.
    Inventors: Kamlesh Pai Panandiker, John Michael Bronk, Franklin Paul Spitler
  • Patent number: 6541596
    Abstract: There is disclosed a crystallizable poly(2,5-di-substituted-1,4-phenylene oxide), which exhibits an exothermic peak for crystallization of not less than 5 J/g at 150° C. or over when cooled after melting, and/or an endothermic peak, at the time of melting of crystals thereof, of not less than 5 J/g at 150° C. or over when re-heated after cooling of the melt, and which comprises a recurring unit of the following formula (I), and a method of preparing the same by polymerization of a 2,5-di-substituted-phenol of the following formula (II) by use of a copper complex catalyst made of a tridentate ligand of which nitrogen atoms coordinate to a copper atom in coexistence with oxygen: wherein R1's independently represent a hydrocarbon group or a substituted hydrocarbon group, and they may be the same or different. The crystallizable poly(2,5-di-substituted-1,4-phenylene oxide) is able to provide a melt molding which has a reduced degree of coloration and good heat resistance.
    Type: Grant
    Filed: February 1, 2000
    Date of Patent: April 1, 2003
    Assignees: Secretary of Agency of Industrial Science and Technology, Japan Chemical Innovation Institute
    Inventors: Hideyuki Higashimura, Kiyoshi Fujisawa, Yoshihiko Moro-oka, Shiro Kobayashi
  • Patent number: 6541597
    Abstract: According to the present invention, a resist resin having in its structure a specific bridged-bond-containing aliphatic ring, and a resist composition comprising the same are provided. By using this resist composition, a resist pattern excellent in both transparency against short-wavelength light and dry-etching resistance can be formed by alkali development with high resolution.
    Type: Grant
    Filed: June 21, 2001
    Date of Patent: April 1, 2003
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Takeshi Okino, Koji Asakawa, Naomi Shida, Toru Ushirogouchi, Satoshi Saito