Two Or More Sulfur Atoms; Or At Least One Atom Other Than S, O, H, Or A Metal Patents (Class 524/419)
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Patent number: 11834537Abstract: A latex composition for dip molding includes a carboxylic acid-modified nitrile-based copolymer latex having pKa of 9.5 to 10.2 and satisfying General Formulas 1 and 2. 0.85?P?1.0, P=CVD/CV0??[General Formula 1] 5?M?20, M=m1×m2??[General Formula 2] wherein CV0 represents a capillary viscosity which is measured in a swollen in a methyl ethyl ketone solvent, CVD represents a capillary viscosity in a deswollen state, m1 represents an insolubility of a dried film in the methyl ethyl ketone solvent, and m2 represents a swelling index of the dried film in the methyl ethyl ketone solvent, wherein a carboxylic acid-modified nitrile-based copolymer of carboxylic acid-modified nitrile-based copolymer latex includes: a conjugated diene-based monomer-derived unit, an ethylenic unsaturated nitrile-based monomer-derived unit, and an ethylenic unsaturated acid monomer-derived unit.Type: GrantFiled: February 8, 2021Date of Patent: December 5, 2023Inventors: Ji Young Lee, Jung Eun Kim, Won Sang Kwon, Seung Uk Yeu, Myung Su Jang
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Patent number: 11345795Abstract: A cup lump natural rubber devoid of impurities with a size of greater than 0.5 mm and having a plasticity retention index of greater than 80 is provided. The use of such a natural rubber in a line for manufacturing a semi-finished product based on natural rubber makes it possible to ensure an improved compromise of performances which are the productivity of a line for manufacturing semi-finished products and the quality of the semi-finished products resulting from this production line.Type: GrantFiled: November 15, 2018Date of Patent: May 31, 2022Assignee: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELINInventors: Françoise Granet, Denis Bernard, Jérôme Dussillols
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Patent number: 10745539Abstract: To provide a transparent plastic substrate having a high cut rate of blue light, a plastic lens and a transparent plastic member. A transparent plastic substrate containing a benzotriazole compound represented by the formula (1), a plastic lens containing the transparent plastic substrate, and a transparent plastic member containing a benzotriazole compound represented by the formula (1).Type: GrantFiled: December 17, 2018Date of Patent: August 18, 2020Assignee: HOYA LENS THAILAND LTD.Inventors: Masahisa Kousaka, Natsumi Tasaki
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Patent number: 9650514Abstract: The present invention relates to electrostatic dissipative polycarbonate compositions that are prepared by combining an aromatic polycarbonate polymer with a thermoplastic polyurethane based inherently dissipative polymer and a compatibilizer component that comprises a second thermoplastic polyurethane. This second thermoplastic polyurethane is a reaction product of (a) at least one polyol intermediate, (b) at least one diisocyanate, and (c) at least one chain extender, wherein (a), the polyol intermediate comprises a polycaprolactone polyol, a polycarbonate polyol, or combinations thereof.Type: GrantFiled: April 19, 2012Date of Patent: May 16, 2017Assignee: Lubrizol Advanced Materials, Inc.Inventors: Qiwei Lu, Feina Cao
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Patent number: 9074072Abstract: The present invention relates to a large-sized vinyl chloride seed with an average particle size of 0.65 to 1.5 ?m, a vinyl chloride resin with improved low-viscosity properties, and preparation methods thereof. The preparation of the large-sized vinyl chloride seed includes adding a vinyl chloride monomer, an emulsifier, and a polymerization initiator to an aqueous medium; homogenizing the mixed solution using a rotor-stator type homogenizer; and subjecting the resultant monomer droplets to a polymerization reaction.Type: GrantFiled: July 31, 2014Date of Patent: July 7, 2015Assignee: LG Chem, Ltd.Inventors: Kyung Seog Youk, Hyun Jin Shin, Han Hong Kim
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Publication number: 20140249257Abstract: The invention relates to silicone resins comprising metallosiloxane which contains Si—O-Metal bonds or borosiloxane containing Si—O—B bonds and potentially Si—O—Si and/or B—O—B bonds and containing sulfur. It also relates to the preparation of such silicone resins and to their use in thermoplastic or thermosetting organic polymer or rubber or thermoplastic/rubber blends compositions to reduce the flammability or enhanced scratch and/or abrasion resistance of the organic polymer compositions. It further relates to coatings made of such silicone resins for scratch resistance enhancement or flame retardant properties.Type: ApplicationFiled: November 14, 2012Publication date: September 4, 2014Applicant: Dow Corning CorporationInventors: Vincent Rerat, David Pierre
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Patent number: 8822582Abstract: The invention relates to absorptive, crosslinked polymeric composition that are based on partly neutralized, monoethylenically unsaturated monomer carrying acid groups wherein the absorptive crosslinked polymer may be coated with a polymeric coating, and have improved properties, in particular in respect of their capacity for transportation of liquids in the swollen state, and which have a high capacity and a high gel bed permeability.Type: GrantFiled: July 30, 2013Date of Patent: September 2, 2014Assignee: Evonik CorporationInventors: Scott J. Smith, Stan McIntosh, David L. Bergman, Jr.
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Patent number: 8669305Abstract: Disclosed is a polyamideimide-based film coating composition free from any restricted substance or a substance which might possibly be a restricted one such as N-methyl pyrrolidone and N-ethyl pyrrolidone and capable of replacing a conventional coating composition using a solvent such as N-methyl pyrrolidone. The polyamideimide-based film coating composition of the present invention is a polyamideimide-based film coating composition comprising a polyamideimide resin and a solvent, the polyamideimide resin being dissolved as a binder in the solvent, wherein the solvent contains ?-butyrolactone and cyclopentanone, and a volume of ?-butyrolactone is 50% by volume or more compared to a total volume of ?-butyrolactone and cyclopentanone.Type: GrantFiled: September 13, 2011Date of Patent: March 11, 2014Assignee: Valeo Japan Co., Ltd.Inventors: Katsumi Fujimoto, Takao Hasegawa
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Patent number: 8647728Abstract: The present invention relates to a composition comprising a polyester, a copolyester ether, and an oxidation catalyst, wherein the copolyester ether comprises a zinc compound and at least one polyether segment selected from the group consisting of poly(tetramethylene ether) and poly(tetramethylene-co-alkylene ether). The present invention further relates to articles made from the composition and methods to make the composition and the articles.Type: GrantFiled: February 17, 2010Date of Patent: February 11, 2014Assignee: iNVISTA North America S.A.R.L.Inventors: Joseph Drbohlav, III, Zhongzhe Yuan
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Publication number: 20130340651Abstract: A chemically treated carbon black product is provided, which includes a pellet having an agglomerated mass of carbon black aggregates densified in a generally spheroidal form. The carbon black aggregates have polysulfide adsorbed on surfaces thereof. The polysulfide is thereby distributed throughout the pellet. Elastomeric compositions containing the chemically treated carbon black are also provided, and exhibit a reduction in hysteresis and equivalent or better abrasion resistance. A method for manufacturing the treated carbon black product is also disclosed.Type: ApplicationFiled: March 14, 2013Publication date: December 26, 2013Applicant: SID RICHARDSON CARBON & ENERGY CO.Inventors: Wesley Wampler, Borje Michael Jacobsson, Leszek Nikiel, Peter D. Cameron, Joel Neilsen
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Publication number: 20130261239Abstract: The invention concerns processes for forming a polymer comprising residues of 2-(4-amino phenyl)-5(6) amino phenyl benzimidazole (DAPBI), paraphenylene diamine (PPD), and terephthaloyl dichloride, comprising the steps of: (a) forming a solution of oligomers having amine end groups from two moles of DAPBI and one mole of terephthaloyl dichloride in a solvent system comprising an organic solvent and an inorganic salt; (b) adding PPD to the solution of oligomers; and (c) adding additional terephthaloyl dichloride to form a polymer.Type: ApplicationFiled: July 27, 2012Publication date: October 3, 2013Applicant: E.I. DU PONT DE NEMOURS AND COMPANYInventor: KIU-SEUNG LEE
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Patent number: 8519041Abstract: The invention relates to absorptive, crosslinked polymeric composition that are based on partly neutralized, monoethylenically unsaturated monomer carrying acid groups wherein the absorptive crosslinked polymer may be coated with a polymeric coating, and have improved properties, in particular in respect of their capacity for transportation of liquids in the swollen state, and which have a high capacity and a high gel bed permeability.Type: GrantFiled: June 15, 2012Date of Patent: August 27, 2013Assignee: Evonik Stockhausen, LLCInventors: Scott J. Smith, Stan McIntosh, David L. Bergman, Jr.
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Patent number: 8501267Abstract: Methods for preparing nanocomposites with electrical properties modified by powder size below 100 nanometers. Both low-loaded and highly-loaded nanocomposites are included. Nanoscale coated, un-coated, whisker type fillers are taught. Electrical nanocomposite layers may be prepared on substrates.Type: GrantFiled: February 28, 2011Date of Patent: August 6, 2013Assignee: PPG Industries Ohio, Inc.Inventors: Tapesh Yadav, Clayton Kostelecky, Evan Franke, Bijan Miremadi, Ming Au, Anthony Vigliotti
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Patent number: 8501044Abstract: An antistatic composition containing various types of polymers such as a polyamide, an aliphatic polyester, an elastomer thereof and a polyurethane elastomer, and a metal salt in specific amounts, and preferably, an antistatic composition in which an additive component such as an organic compound which has an —{O(AO)n}— group (A represents an alkylene group having 2 to 4 carbon atoms, and n represents an integer of 1 to 7) and all molecular chain terminals of which are CH3 and/or CH2 groups is compounded as needed.Type: GrantFiled: April 20, 2006Date of Patent: August 6, 2013Assignees: Sanko Chemical Industry Co., Ltd., Riken Technos CorporationInventors: Noriaki Fujihana, Yoshiharu Tatsukami, Masaki Enomoto, Ikuo Ohkoshi
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Patent number: 8389671Abstract: The present invention can provide a composition for optical members, which contains (a) a compound having one or more of any group selected from the group consisting of an acryloyl group, a methacryloyl group, an allyl group and a vinyl group and one or more ?-epithiopropyl groups in a molecule. In a preferable embodiment of the present invention, the composition for optical members further contains at least one compound selected from (b) a compound having one or more ?-epithiopropyl groups in a molecule while having no polymerizable unsaturated bond group, (c) an inorganic compound having a sulfur atom and/or a selenium atom, (d) a compound having one or more thiol groups in a molecule, (e) a compound having one or more amino groups in a molecule while having no heterocyclic ring, and (f) a compound having one or more of at least one group selected from the group consisting of a vinyl group, an acryloyl group, a methacryloyl group and an allyl group in a molecule.Type: GrantFiled: March 11, 2008Date of Patent: March 5, 2013Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Motoharu Takeuchi, Hiroshi Horikoshi, Hiroaki Tanaka, Hirohito Ishizuka
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Patent number: 8236884Abstract: The invention relates to absorptive, crosslinked polymeric composition that are based on partly neutralized, monoethylenically unsaturated monomer carrying acid groups wherein the absorptive crosslinked polymer may be coated with a polymeric coating, and have improved properties, in particular in respect of their capacity for transportation of liquids in the swollen state, and which have a high capacity and a high gel bed permeability.Type: GrantFiled: March 23, 2007Date of Patent: August 7, 2012Assignee: Evonik Stockhausen, LLCInventors: Scott J. Smith, Stan McIntosh, David L. Bergman, Jr.
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Publication number: 20120189853Abstract: The anti-corrosion coating material contains corrosion inhibiting inorganic constituents, or a combination of inorganic and organic corrosion inhibiting constituents, suspended in a polymeric resin. The corrosion resistant composition includes a salt of inorganic constituents, and alkaline Poly(3-ammoniumpropylalkoxysiloxane)Carboxylic Acid Salt (PCAS) as a corrosion inhibitor, suspended in a polymeric resin remainder. The coating material may be applied to metal parts but not limited to aircraft fasteners, such as aircraft fastener parts, including nuts and bolts, screws, rivets, and sleeved systems.Type: ApplicationFiled: March 12, 2010Publication date: July 26, 2012Inventors: Johan Stephan, Jeffrey Hayes
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Patent number: 8053512Abstract: A backbone modified polymer comprising the reaction product of an elastomeric polymer and a sulfide modifier represented by Formula 1: AS—Y-Zm (Formula 1), and wherein Y is (C12-C100) aralkyl, (C12-C100) aryl, (C12-C100) alkyl, or (C12-C100) dialkylether (alkyl-O-alkyl), and wherein each may be optionally substituted with (C1-C4alkyl, (C1-C4alkoxy, (C7-C16aryl, (C7-C16 aralkyl, nitrile, amine, NO2, alkoxy, or thioalkyl; S is sulfur; A is hydrogen, —(S)p—R1 or -MR2R3R4; Z is —SH, —S-MR5R6R7, —S—(S)p—R8, —NR9R10, —NR11COR12, —O—CO—R13, —NCO, or —COOR14; M is silicon or tin; N is nitrogen; O is oxygen; m is the number one, two or three; p is the number one, two, three, four or five; R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13 and R14 are the same or different, and are each, independently, selected from hydrogen (H), (C1-C16) alkyl, (C6-C16) aryl, (C7-C16) aralkyl or (C3-C30) tri(hydrocarbyl)silyl, and wherein the hydrocarbyl groups are each independently selected from (C1-C16) alkyl, (C6-C16) aryl, orType: GrantFiled: December 14, 2007Date of Patent: November 8, 2011Assignee: Styron Europe GmbHInventors: Sven K. H. Thiele, Joachim Kiesekamp
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Publication number: 20110242201Abstract: Provided is a treatment liquid used for ink-jet recording including polyallylamine, water, and at least one acid selected from the group consisting of nitric acid, amidosulfonic acid, and itaconic acid.Type: ApplicationFiled: March 30, 2011Publication date: October 6, 2011Applicant: BROTHER KOGYO KABUSHIKI KAISHAInventors: Ryuji KATO, Hitomi SADOHARA, Noriaki SATOH, Chisato HAYASHI, Eiji KAWAMURA
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Patent number: 8025916Abstract: A composite stent and a method for making the same are provided.Type: GrantFiled: December 18, 2006Date of Patent: September 27, 2011Assignee: Abbott Cardiovascular Systems Inc.Inventors: Syed F. A. Hossainy, Orlando Padilla, Daryush Mirzaee, Fuh-Wei Tang
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Publication number: 20110174453Abstract: The invention relates to an aqueous polymer dispersion comprising an anionic water-soluble dispersion polymer comprising in polymerized form a monomer mixture comprising (i) one or more anionic monomers, (ii) a first non-ionic vinyl monomer which is acrylamide, and (iii) at least one second non-ionic vinyl monomer; a water-soluble salt and a stabilizer, wherein the water soluble salt is present in an amount of at least 2.0% by weight, based on the total weight of the dispersion. The invention further relates to a process for producing the aqueous polymer dispersion, use of the aqueous polymer dispersion as a flocculating agent in papermaking or for water purification, and a process for producing paper which comprises adding one or more drainage and retention aids comprising the aqueous polymer dispersion to an aqueous suspension containing cellulosic fibres and then dewatering the obtained suspension.Type: ApplicationFiled: August 19, 2009Publication date: July 21, 2011Applicants: AKZO NOBEL B.V., Fraunhofer-Gesellschaft zur Forderung der Angewandten Forschung E.V.Inventors: Christian Przybyla, Oliver Struck, André Laschewsky, Bernd-Reiner Paulke
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Publication number: 20100130661Abstract: The present invention can provide a composition for optical members, which contains (a) a compound having one or more of any group selected from the group consisting of an acryloyl group, a methacryloyl group, an allyl group and a vinyl group and one or more ?-epithiopropyl groups in a molecule. In a preferable embodiment of the present invention, the composition for optical members further contains at least one compound selected from (b) a compound having one or more ?-epithiopropyl groups in a molecule while having no polymerizable unsaturated bond group, (c) an inorganic compound having a sulfur atom and/or a selenium atom, (d) a compound having one or more thiol groups in a molecule, (e) a compound having one or more amino groups in a molecule while having no heterocyclic ring, and (f) a compound having one or more of at least one group selected from the group consisting of a vinyl group, an acryloyl group, a methacryloyl group and an allyl group in a molecule.Type: ApplicationFiled: March 11, 2008Publication date: May 27, 2010Inventors: Motoharu Takeuchi, Hiroshi Horikoshi, Hiroaki Tanaka, Hirohito Ishizuka
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Patent number: 7687569Abstract: The invention provides a radiation-curable adhesion-promoting composition comprising unsaturated amorphous polyesters and reactive diluents and a process for preparing it and also provides for the use of unsaturated amorphous polyesters in reactive diluents as adhesion-promoting additives.Type: GrantFiled: May 9, 2005Date of Patent: March 30, 2010Assignee: Evonik Degussa GmbHInventors: Patrick Glöckner, Andreas Wenning, Peter Denkinger, Erika Retzlaff
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Patent number: 7666942Abstract: A therapeutic exercise putty is provided which comprises a uniform mixture of a first mass of putty and modeling clay. The first mass of putty includes hydroxy-terminated polymethylsiloxane having a viscosity of about 20 to about 50,000 cps.Type: GrantFiled: May 26, 2009Date of Patent: February 23, 2010Inventors: Maurice Gregory Minuto, David W. Bean
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Publication number: 20100029156Abstract: A flame retardant synthetic fiber and a flame retardant fiber composite that satisfy high flame retardance and high fire resistance, a method for producing the flame retardant synthetic fiber and the flame retardant fiber composite, and a textile product are provided. The flame retardant synthetic fiber of the present invention includes a polymer (1) containing 30 to 70 parts by mass of acrylonitrile, 70 to 30 parts by mass of a halogen-containing vinylidene monomer and/or a halogen-containing vinyl monomer, and 0 to 10 parts by mass of a vinyl-based monomer copolymerizable therewith, based on 100 parts by mass of the polymer, and at least one kind of a metal compound (2) that accelerates a dehalogenation reaction of the polymer (1) during burning and a carbonization reaction of the polymer (1) during burning, wherein the flame retardant synthetic fiber has a shrinkage variation of 45% or less when a temperature is raised from 50° C. to 300° C. under a load of 0.0054 mN/dtex.Type: ApplicationFiled: July 21, 2009Publication date: February 4, 2010Applicant: KANEKA CORPORATIONInventors: Takeshi TANAKA, Hiroyasu HAGI, Toshiaki EBISU
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Publication number: 20090326129Abstract: A flame-retardant, optically clear thermoplastic molding composition is disclosed. The composition contains aromatic polycarbonate resin, a bromine-substituted carbonate oligomer, a phosphorous containing compound and an inorganic salt of perfluoroalkane sulfonic acid in amounts effective to impart to the composition flame resistance that in accordance with UL-94-5V standard is rated A at 3.00 mm and V-0 at 1.5 mm.Type: ApplicationFiled: June 30, 2008Publication date: December 31, 2009Inventors: Marina Rogunova, Nicolas Sunderland, Gerald A. DiBattista
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Patent number: 7550524Abstract: A filled elastomer composition comprises: a) at least one rubber component; b) at least one particulate filler; and, c) at least one mercaptofunctional silane of a particular structure.Type: GrantFiled: October 6, 2006Date of Patent: June 23, 2009Assignee: Momentive Performance Materials Inc.Inventors: Antonio Chaves, Eric Raymond Pohl, Richard W. Cruse, Daniel Gurovich
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Publication number: 20080303184Abstract: A composition of fluoropolymer and dispersed conductive particulate provides an electrically conductive polymeric material resistant to static charge buildup. Radiation curing, especially electron beam radiation curing, is favored for curing fluoroelastomer-based precursor articles into desired electrically conductive articles.Type: ApplicationFiled: May 20, 2008Publication date: December 11, 2008Applicant: Freudenberg-NOK General PartnershipInventor: Edward Hosung PARK
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Publication number: 20080234420Abstract: The invention relates to absorptive, crosslinked polymeric composition that are based on partly neutralized, monoethylenically unsaturated monomer carrying acid groups wherein the absorptive crosslinked polymer may be coated with a polymeric coating, and have improved properties, in particular in respect of their capacity for transportation of liquids in the swollen state, and which have a high capacity and a high gel bed permeability.Type: ApplicationFiled: March 23, 2007Publication date: September 25, 2008Inventors: Scott J. Smith, Stan McIntosh, David L. Bergman
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Publication number: 20080161453Abstract: A polyphenylene sulfide resin composition and a plastic mold produced using the same is disclosed. The composition includes a base resin including about 60 to about 95% by weight of a polyphenylene sulfide resin and about 5 to about 40% by weight of a polyphenylene ether resin, and about 0.01 to about 5.0 parts by weight of a disulfide compound based on 100 parts by weight of the base resin.Type: ApplicationFiled: December 18, 2007Publication date: July 3, 2008Applicant: CHEIL INDUSTRIES INC.Inventors: Eun Joo LEE, Chang Min HONG
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Publication number: 20080153955Abstract: A process for the preparation of a fluoroolefin polymer from an azeotropic mixture of monomers having a constant composition, the process including the step of: contacting in a reaction zone: (i) an initiator; and (ii) an azeotropic mixture of monomers including at least one fluoroolefin and, optionally, at least one ethylenically unsaturated comonomer capable of copolymerizing therewith; wherein the contacting is carried out at a temperature, pressure and length of time sufficient to produce the fluoroolefin polymer.Type: ApplicationFiled: December 20, 2007Publication date: June 26, 2008Inventors: George J. Samuels, Gregory J. Shafer, Hang T. Pham
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Patent number: 7361711Abstract: A golf ball including a core and at least one layer disposed about the core, wherein the core or the layer is formed from a composition including a base polymer, a crosslink initiator, and an additive, wherein the additive is both an inorganic-sulfur compound and a sulfuric acid amide.Type: GrantFiled: July 1, 2005Date of Patent: April 22, 2008Assignee: Acushnet CompanyInventors: David A. Bulpett, Brian Comeau, Derek A. Ladd
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Patent number: 7342068Abstract: Aqueous polyurethane dispersions comprising polyurethane polymer and methods for making and using same are disclosed herein. In one aspect of the present invention, aqueous polyurethane dispersions, comprising a polyurethane polymer having a weight average molecular weight ranging from 20,000 to 80,000, are prepared by controlling the weight average molecular weight of the polymer by reacting the isocyanate terminated prepolymer with at least one chain terminating agent; and/or maintaining a N/COOH molar ratio of amine in the neutralizing agent to acid functional group in the isocyanate reactive compound to from about 0.5:1 to about 1:1.Type: GrantFiled: November 18, 2003Date of Patent: March 11, 2008Assignee: Air Products and Chemicals, Inc.Inventors: Eric Howard Klingenberg, Shafiq Nisarali Fazel
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Patent number: 7226551Abstract: It is an object of the present invention to provide a conductive member for use in OA equipment which shows very stable conductivity in the volume resistivity range of 105 to 1012 ?·cm, the conductivity of which is less dependent on the voltage applied and varies only slightly during continuous energization and upon changes in environmental factors such as temperature and humidity and which will not stain photoconductors due to bleeding or blooming. The present invention provides a conductive member for OA equipment, which is obtainable by molding a composition comprising a non-ether-based polyurethane and bis(trifluoromethanesulfonyl)imidolithium.Type: GrantFiled: April 22, 2002Date of Patent: June 5, 2007Assignee: Bando Chemical Industries, Ltd.Inventors: Takahiko Okazaki, Makoto Hasegawa, Takashi Miki, Takayuki Nagase, Hiroyuki Inai
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Patent number: 7041724Abstract: The present invention provides a resol-type phenol resin composition which can be cured even in a low temperature range, using a curing accelerator which has no adverse effect on other materials or substances with which the resulting cured article is in contact, or a curing accelerator which requires a small amount of an additive. The composition comprises a resol-type phenol resin (A), an alkali earth metal oxide and/or an alkali earth metal hydroxide (B) (e.g. magnesium oxide, calcium hydroxide, barium hydroxide, etc.), and a salt (C) of a sulfur atom-containing oxo acid and a nitrogen atom-containing base (e.g. ammonium thiosulfate, etc.). This composition is cured at 10 to 110° C.Type: GrantFiled: June 28, 2001Date of Patent: May 9, 2006Assignee: Dainippon Ink and Chemicals, Inc.Inventors: Kenichi Sameshima, Kunio Mori, Tadashi Inoue
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Publication number: 20040176512Abstract: The invention is the manipulation of the zinc oxide content and sulfur content of nitrile butadiene rubbers and selected vulcanization conditions that can be achieved economically with common production facilities. The manipulation of these components affects the relaxation property of gloves formed by this material. Produced are gloves that have a relaxation property, higher than 50%, and a low modulus (approximately 3 Mpa). The glove maintains decent ultimate tensile strength (>20 Mpa) and elongation (>500%). The glove is produced by a vulcanization process, which lasts from 5 to 60 minutes at temperatures ranging from 300° F. to 400° F. The tensile strength and elongation are well above the ASTM requirements for medical gloves. The current ASTM requirements are ASTM D412-92. Thanks to sufficient vulcanization, the films produced provide satisfactory protection from viral penetration. The tearing strength is also better because of the lower modulus.Type: ApplicationFiled: January 13, 2004Publication date: September 9, 2004Inventor: Jian Tao
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Patent number: 6767949Abstract: The invention relates to a composition comprising, a) at least one oligomer, cooligomer, polymer or copolymer or blends thereof, containing a stable free nitroxyl radical (1); and b) a reducing agent; with the proviso that the composition is essentially free of a polymerizable monomer.Type: GrantFiled: May 22, 2002Date of Patent: July 27, 2004Assignee: Ciba Specialty Chemicals CorporationInventors: Rudolf Pfaendner, Michael Roth, Wiebke Wunderlich
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Patent number: 6617376Abstract: A flexible wood composition comprising at least one cellulosic filler and a material selected from the group consisting of thermoplastic elastomers and melt-processible rubbers. Additionally, the composition may include other ingredients including, but not limited to, a stabilizer, a lubricant, and a fatty acid. The composition can be used to make a variety of components such as flooring, gaskets, stair treads, weather stripping, hinges, sound absorption components, trim, seals, grips, surface treatment for various surfaces, bumpers, toys, buttons, and tubing.Type: GrantFiled: March 30, 2001Date of Patent: September 9, 2003Assignee: Crane Plastics Company LLCInventor: Arthur F. Korney, Jr.
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Publication number: 20030144399Abstract: A water soluble copolymer useful as an inorganic pigment dispersant is comprised of a polymerized (1) monomer which is an ethylenically unsaturated organic phosphate or phosphonate and (2) an ethylenically unsaturated carboxylated monomer, wherein the amount of the ethylenically unsaturated carboxylated monomer is sufficient to permit the copolymer to associate with an inorganic pigment in an aqueous medium in a manner which disperses the inorganic pigment in the aqueous medium to form a stable aqueous dispersion of the inorganic pigment. The pigment dispersants according to the invention are particularly useful for dispersing concentrated ZnO slurries having a ZnO content of up to about 70% and in slurries containing ZnO in the presence of TiO2.Type: ApplicationFiled: October 2, 2002Publication date: July 31, 2003Inventors: Bruce L. Matta, Ronald W. Broadbent, Grannis S. Johnson, Michael S. Wiggins
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Patent number: 6548707Abstract: Halogen-containing polymer compositions comprising a latent mercaptan-containing heat stabilizer composition substantially free from the offensive odor typically associated with mercaptans are protected during processing by the degradation products of the latent (i.e., blocked) mercaptan which include a free mercaptan. Other products of the degradation are believed to include carbocations of the blocking moiety which are stabilized by a molecular structure in which the electron deficiency is shared by several groups. The latent mercaptan may be the sole heat stabilizer additive but the free mercaptan released during processing may also synergize the activity of metal-based heat stabilizers such as metal salts and organometallic stabilizers such as organotin carboxylates and mercaptides in the polymer composition. The odor of primary mercaptan-containing heat stabilizers in halogenated polymer compositions is masked by a small amount of a latent mercaptan.Type: GrantFiled: August 4, 1999Date of Patent: April 15, 2003Assignee: Rohm and Haas CompanyInventors: Tod C. Duvall, Paul B. Adams, Gene K. Norris
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Publication number: 20030054165Abstract: A stretched resin film comprises a uniaxially stretched film comprising a propylene-base polymer (A) in an amount of 30 to 79 wt %, polybutene-1 (B) in an amount of 3 to 25 wt %, a petroleum resin (C) and/or hydrogenated terpene resin (D) in an amount of 3 to 25 wt %, and an organic and/or inorganic fine powder (E) in an amount of 10 to 65 wt %. The stretched resin film is a white, opaque film having excellent heat shrinking properties, printability and stiffness, and does not contribute to environmental pollution when burned.Type: ApplicationFiled: May 24, 2002Publication date: March 20, 2003Applicant: YUPO CORPORATIONInventors: Masaaki Yamanaka, Kazuyuki Kimura
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Patent number: 6531532Abstract: Optical materials which are cured compositions of a mixture of (a) a compound comprising sulfur and (b) an inorganic compound comprising at least one atom selected from the group consisting of sulfur atom and selenium atom, the optical material being obtained by curing the compositions by polymerization. Optical materials having a large refractive index and a large Abbe number are obtained from the compositions.Type: GrantFiled: April 18, 2000Date of Patent: March 11, 2003Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Yuichi Yoshimura, Motoharu Takeuchi, Atsuki Niimi, Hiroshi Horikoshi
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Patent number: 6528558Abstract: Compositions are disclosed for the flame retardation of polymeric compositions including fillers such as glass fibers. The compositions contain a flame retarding effective additive of at least one polyphosphate, a sulfur containing compound, catalyst and a nitrogen containing compound such as melamine.Type: GrantFiled: July 19, 2001Date of Patent: March 4, 2003Inventor: Menachem Lewin
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Patent number: 6500880Abstract: The ink set of this invention comprises at least two inks, one of which contains a pH sensitive polymer and pigment colorant with dispersant. A second ink is provided which comprises incompatible inorganic or organic salts or has an appropriate pH. The polymer precipitates onto a medium upon contact with the second ink, thereby providing improved bleed control.Type: GrantFiled: October 26, 2000Date of Patent: December 31, 2002Assignee: Hewlett-Packard ComapnyInventor: Dennis P. Parazak
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Publication number: 20020193488Abstract: The invention is the manipulation of the zinc oxide content and sulfur content of nitrile butadiene rubbers and selected vulcanization conditions that can be achieved economically with common production facilities. The manipulation of these components affect the relaxation property of gloves formed by this material. Produced are gloves that have a relaxation property, higher than 50%, and a low modulus (approximately 3 Mpa). The glove maintains decent ultimate tensile strength (>20 Mpa) and elongation (>500%). The glove is produced by a vulcanization process which lasts from 5 to 60 minutes at temperatures ranging from 300° F. to 400° F. The tensile strength and elongation are well above the ASTM requirements for medical gloves. The current ASTM requirements are ASTM D412-92. Thanks to sufficient vulcanization, the films produced provide satisfactory protection from viral penetration. The tearing strength is also better because of the lower modulus.Type: ApplicationFiled: April 12, 2002Publication date: December 19, 2002Inventor: Jian Tao
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Patent number: 6492449Abstract: The present invention concerns polymers obtained by anionic initiation and bearing functions that can be activated by cationic initiations that are not reactive in the presence of anionic polymerization initiators. The presence of such cationic initiation functions allow an efficient cross-linking of the polymer after moulding, particularly in the form of a thin film. It is thus possible to obtain polymers with well-defined properties in terms of molecular weight and cross-linking density. The polymers of the present invention are capable of dissolving ionic compounds inducing a conductivity for the preparation of solid electrolytes.Type: GrantFiled: May 7, 2002Date of Patent: December 10, 2002Assignee: Hydro-QuebecInventors: Christophe Michot, Alain Vallée, Paul-Étienne Harvey, Michel Gauthier, Michel Armand
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Patent number: 6451893Abstract: A new formulation for producing nitrile gloves has been developed. The resulting glove shows following outstanding characteristics: stress at six minutes greater than 50% of its initial value; ultimate tensile strength and elongation well above ASTM requirements; and much lower modulus than almost all the nitrile gloves currently commercially available. The unique formulation is zinc oxide free and is vulcanized from 5 to 60 minutes at temperatures ranging from 300° F to 400° F.Type: GrantFiled: June 11, 2001Date of Patent: September 17, 2002Assignee: Microflex CorporationInventor: Jian Tao
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Patent number: 6417347Abstract: A method for producing a S-nitrosylated species is provided. The method comprises: (a) providing a deoxygenated, alkaline aqueous solution comprising a thiol and a nitrite-bearing species; (b) acidifying the solution by adding acid to the solution while concurrently mixing the solution (e.g., by vigorously stirring the solution) to produce the S-nitrosylated species; and (c) isolating the S-nitrosylated species. The nitrite-bearing species can be, for example, an inorganic nitrite, such as an alkali metal nitrite, or an organic nitrite, such as an alkyl nitrite (e.g., ethyl nitrite, amyl nitrite, isobutyl nitrite or t-butyl nitrite). The thiol is preferably a thiol-containing polysaccharide, a thiol-containing lipoprotein, a thiol-containing amino acid or a thiol-containing protein, and more preferably a thiol-containing polysaccharide such as thiolated cyclodextrin. In many preferred embodiments, the S-nitrosylated species is insoluble in the acidified solution, precipitating upon formation.Type: GrantFiled: August 24, 2000Date of Patent: July 9, 2002Assignee: Scimed Life Systems, Inc.Inventors: Robert A. Herrmann, David Knapp
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Publication number: 20020058745Abstract: Aqueous dispersions of cationic water-soluble polymers are provided, as well as processes for making and methods of using the same.Type: ApplicationFiled: September 4, 2001Publication date: May 16, 2002Inventors: Sun-Yi Huang, Louis Rosati, Joseph J. Kozakiewicz
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Patent number: 6359046Abstract: The present invention discloses novel hydrocarbon core polysulfide silanes and methods of preparing the hydrocarbon core polysulfide silanes. Preferably, the silanes of the present invention contain assemblies of a single unit of a hydrolyzable silane group, tethered to one end of a chain of sulfur atoms, and several of these assemblies are bound to a common central hydrophobic core via the other end of the sulfur atoms chain. The hydrocarbon core polysulfide silanes may be incorporated into filled elastomeric compositions providing improved dispersiblity of the filler materials. Mineral fillers may be pre-treated with the hydrocarbon core polysulfide silanes prior to use in elastomeric compositions.Type: GrantFiled: September 8, 2000Date of Patent: March 19, 2002Assignee: Crompton CorporationInventor: Richard W. Cruse