Elemental Metal Or Inorganic Compound Thereof Patents (Class 525/371)
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Patent number: 5502131Abstract: An anionic polymerization initiator includes the C-lithio reaction product of an organolithium compound and a tertiary-amino allyllithium or a tertiary-amino xylyllithium. When used in an anionic polymerization, a functional group from the initiator is incorporated onto the head of the growing polymer and a lithium atom is incorporated at the "living" end of the polymer chain prior to quenching. The initiator may be used to polymerize a monomer(s) including diolefin monomers, monovinyl aromatic monomers and trienes, and the living ends of the polymers are effectively maintained even at temperatures of up to 300.degree. F. and higher. Such polymers exhibit an increased efficiency in coupling termination reactions, and products prepared from such polymers exhibit improved hysteresis characteristics. Products such as tires and the like can be prepared from such polymers and from vulcanizable elastomer compositions employing the polymers.Type: GrantFiled: June 6, 1995Date of Patent: March 26, 1996Assignee: Bridgestone CorporationInventors: Thomas A. Antkowiak, James E. Hall, David F. Lawson, John R. Schreffler, Mark L. Stayer, Jr.
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Patent number: 5498785Abstract: A continuous process for the aminolysis of polymers produced from ethylenically unsaturated structural units comprising contacting, in a reaction vessel,(a) a molten polymer containing structural units produced from alpha-olefins having from 2 to 8 carbons atoms, and esters of of .alpha.,.beta.-ethylenically-unsaturated carboxylic acids in a reaction vessel; and(b) a liquid phase comprising an amine-containing compound, e.g., an alkylamine having an alkyl group containing 1-30 carbon atoms, ammonia, or derivatives thereof, in the presence of(c) a catalytically effective amount of a catalyst, which is preferably a metal-containing solution, for a period of time effective to produce a polymer containing acrylamide structural units, wherein the period of time is less than about 1 hour.This process is performed continuously in a reaction vessel, preferably in at least one reactive extruder, under conditions effective to provide an ethylene co-polymer containing acrylamide structural units.Type: GrantFiled: January 14, 1994Date of Patent: March 12, 1996Assignee: Chevron Chemical CompanyInventors: James H. Wang, Victor P. Kurkov, Leslie P. Theard, David Rosendale
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Patent number: 5496860Abstract: An antibacterial fiber includes an ion exchange fiber and an antibacterial metal ion entrapped within the ion exchange fiber through an ion exchange reaction. The invention also discloses antibacterial textiles and water-treating element using the fibers.Type: GrantFiled: December 28, 1993Date of Patent: March 5, 1996Assignees: Suntory Limited, Takuma Co., Ltd., Nitivy Company LimitedInventors: Nobuya Matsumoto, Shinichi Kunisaki, Goro Fujiwara, Mitsunobu Masuda, Hiroshi Horie, Asaichi Kawanaka
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Patent number: 5491199Abstract: Salt-free poly(vinylamine) and vinylamine copolymers are formed by heating N-vinylformamide or N-vinylformamide copolymers to a temperature from about 50.degree. to 225.degree. C. in an aqueous medium in the presence of a catalyst comprising a transition metal which is a member of either the first transition series or of Group VIII.Type: GrantFiled: February 22, 1995Date of Patent: February 13, 1996Assignee: Air Products and Chemicals, Inc.Inventors: Michael E. Ford, John N. Armor
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Patent number: 5484849Abstract: An air curing polymer composition is disclosed which contains acetoacetate functional polymer and an autoxidizable material. The composition cures on exposure to oxygen. One pack stable ambient curing compositions and a method of stabilizing acetoacetate functional groups to prevent hydrolysis are also disclosed.Type: GrantFiled: December 30, 1994Date of Patent: January 16, 1996Assignee: Rohm and Haas CompanyInventors: Daniel A. Bors, Alvin C. Lavoie, William D. Emmons
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Patent number: 5466755Abstract: Disclosed herein is an optical filter comprising: a resin material obtained by copolymerizing a monomer represented by the following formula (I) and a monomer copolymerizable therewith; and a metallic compound mainly composed of a copper compound;PO(OH).sub.n R.sub.3-n (I)wherein R represents ##STR1## (wherein X represents a hydrogen atom or a methyl group, and m is an integer of 0 to 5), and n is 1 or 2.Type: GrantFiled: March 14, 1994Date of Patent: November 14, 1995Assignee: Kureha, Kagaku Kogyo Kabushiki KaishaInventors: Teruo Sakagami, Takeo Ogihara, Yasufumi Fujii, Hiroki Katono
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Patent number: 5439984Abstract: Surfaces of fine polystyrene (PS) and polymethyl methacrylate (PMMA) powders were modified by exposure to the downstream products of a nitrogen or oxygen microwave plasma. The effects of nitrogen and indium incorporation in the powder surface were studied with emphasis on variations in the triboelectric properties of the powder. X-ray photoelectron spectroscopy (XPS) was utilized to determine the changes in surface elemental composition. After nitrogen plasma treatment, the C 1s peak profiles suggested the formation of amines in the case of PS, and the formation of imines and amides in the case of PMMA. Oxygen plasma treatment suggested the formation of hydroxyl and carbonyl groups on the surfaces of both PS and PMMA. After treatment with a nitrogen or oxygen plasma, the charge-to-mass ratio (Q/M) of PS and PMMA powders in contact with carrier particles was measured using the cage blowoff method. The surface charge density (Q/A) was calculated from Q/M.Type: GrantFiled: December 22, 1993Date of Patent: August 8, 1995Inventors: Jun Kodama, Renate Foerch, N. Stewart McIntyre, George S. P. Castle
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Patent number: 5436299Abstract: Salt-free vinylamine copolymers are formed by heating the corresponding N-vinylformamide copolymer to a temperature from about 75.degree. to 225.degree. C. in non-aqueous media in the presence of a catalyst comprising a Group VIII metal.Type: GrantFiled: December 20, 1994Date of Patent: July 25, 1995Assignee: Air Products and Chemicals, Inc.Inventors: Michael E. Ford, John N. Armor
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Patent number: 5422403Abstract: The subject invention discloses a process for preparing a coupled styrene-isoprene-butadiene rubber which is particularly valuable for use in making automobile tire tread rubber compounds which comprises the steps of (1) solution terpolymerizing in an organic solvent from about 5 weight percent to about 40 weight percent styrene, from about 1 weight percent to about 10 weight percent isoprene, and from about 50 weight percent to about 94 weight percent 1,3-butadiene, based on total monomers, to a conversion of at least about 90% to produce a living styrene-isoprene-butadiene polymer, wherein the terpolymerization is initiated with an organolithium compound, and wherein the terpolymerization is conducted in the presence of a polar modifier at a molar ratio of the polar modifier to the organolithium compound, which is within the range of about 0.5:1 to about 5:1, and wherein the terpolymerization is conducted at a temperature which is within the range of about 20.degree. C. to about 150.degree. C.Type: GrantFiled: August 11, 1994Date of Patent: June 6, 1995Assignee: The Goodyear Tire & Rubber CompanyInventors: Wen-Liang Hsu, Adel F. Halasa, Barry A. Matrana, Scott M. Christian, Laurie E. Austin, Bill B. Gross
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Patent number: 5420195Abstract: A water-resistant, removable pressure sensitive adhesive for use with transparent film facestocks comprises an acrylic-based emulsion polymer composition comprising 85 to 97% by weight alkyl acrylate monomers, up to 3% by weight polar monomers, up to 1% by weight internal crosslinking agent and up to 2% by weight external crosslinking agent.Type: GrantFiled: January 10, 1992Date of Patent: May 30, 1995Assignee: Avery Dennison CorporationInventors: Andre Mayer, Paul Keller
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Patent number: 5387368Abstract: An oxygen scavenging composition comprising an intimate mixture of (A) a compound having a skeleton of the following formula (1), ##STR1## wherein R is a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, m is an integer of 3 to 5, and n is an integer of 1 to 3, provided that m+n equals 6,(B) a transition metal compound and (C) a phosphorus compound. This composition is useful in a variety of fields requiring prevention of rust formation on metal, prevention of oxidation and decay of an organic substance, preservation of foods, prevention of insects and prevention of mold.Type: GrantFiled: November 6, 1992Date of Patent: February 7, 1995Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Toshiaki Nishimura, Kazumi Tanaka, Masahiro Harada, Kiichiro Seki, Shuta Kihara
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Patent number: 5367031Abstract: An oxidizing resin for iodide conversion and retention is prepared from a metal chelating resin providing functional groups binding polyvalent metal ions. The oxidizing resin is formed by applying an alcohol solution of zirconium peroxide to the chelating resin granules. The resulting oxidizing resin will convert iodide to iodine in aqueous solution, and will retain the converted iodine within the resin granules. When the oxidative capacity has been reduced by treating large amounts of iodide, it can be easily regenerated by contacting the zirconium-containing resin with hydrogen peroxide.Type: GrantFiled: January 25, 1994Date of Patent: November 22, 1994Assignee: Kansas State University Research FoundationInventors: George L. Marchin, Jack L. Lambert
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Patent number: 5354822Abstract: An anionic polymerization initiator comprising the reaction product of a functionalizing agent selected from the group consisting of substituted aldimines, ketimines and secondary amines and, an organolithium compound. Elastomeric polymers prepared with these initiators have functional sites incorporated at the initiator end of the polymer chain and provide vulcanizable rubber compounds exhibiting reduced hysteresis. Articles such as tires, produced with low hysteresis elastomeric polymers have lower rolling resistance. Methods are also provided for preparing the initiators, functionalized polymers and vulcanizable elastomeric compounds having reduced hysteresis.Type: GrantFiled: September 8, 1992Date of Patent: October 11, 1994Assignee: Bridgestone/Firestone, Inc.Inventors: Thomas A. Antkowiak, David F. Lawson, Russell W. Koch, Mark L. Stayer, Jr.
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Patent number: 5340879Abstract: The invention relates to polymer resins which are dispersible or soluble in water, wherein the resin is an amorphous, chlorinated, chemically modified copolymer or terpolymer prepared from polyethylene, polybutene and/or polypropylene and having an amorphous polypropylene content of at least 50% by weight, an average molecular weight Mw of 10,000 to 100,000 g/mol, a non-uniformity of 1.0 to 6.5, a chlorine content of 2.5 to 50% by weight, an anionic or cationic salt group content of 5 to 250 milliequivalents per 100 g of polymer resin and a content of polyoxyalkylene units of 0 to 40% by weight, the proportion of oxyethylene units being at least 30% by weight of the oxyalkylene units.Type: GrantFiled: March 12, 1993Date of Patent: August 23, 1994Assignees: Bayer Aktiengesellschaft, Bayer Antwerpen N.V.Inventors: Raymond Audenaert, Stephan Kirchmeyer, Kirkor Sirinyan, Wolfgang Henning
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Patent number: 5320905Abstract: Novel ionomers of normally solid, thermo-plastic, orientable, copolymers of ethylene and at least one alpha,beta-ethylenically-unsaturated carboxylic acid having a relatively high content of the carboxylic acid are prepared under conditions whereby the copolymers are essentially solubilized in a strong base and contacted with at least one compound which contains ionomer-forming cations. One of the preferred polymers is an ethylene/acrylic acid copolymer. The so-formed ionomers are useful as materials for constructing various items and articles.Type: GrantFiled: February 27, 1992Date of Patent: June 14, 1994Assignee: The Dow Chemical CompanyInventors: Walter L. Vaughn, Thomas J. McKeand, Jr,
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Patent number: 5319018Abstract: Acid-functional polymer is reacted with a transition metal compound at a temperature above the T.sub.g of the polymer to produce crosslinked polymer. The process produces a liquid polymer product that dries to a crosslinked film without the required presence of volatile ligands. Improved coating such as floor polishes are also disclosed.Type: GrantFiled: June 19, 1992Date of Patent: June 7, 1994Assignee: Rohm and Haas CompanyInventors: Joseph M. Owens, Richard T. Gray
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Patent number: 5310786Abstract: The invention relates to polymer conjugates which are reversibly precipitable from aqueous solution and are composed of a carrier polymer which is soluble in aqueous medium and of a catalytically active compound which is chemically bonded thereto. The invention also relates to a process for the preparation of polymer conjugates of this type, and to the use thereof in homogeneous catalysis, especially biocatalysis.Type: GrantFiled: August 16, 1993Date of Patent: May 10, 1994Assignee: Hoechst AktiengesellschaftInventors: Klaus-Dieter Vorlop, Kerstin Steinke, Dieter Wullbrandt, Merten Schlingmann
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Patent number: 5302430Abstract: These compositions comprise a polyamide (PA) resulting from the polycondensation of an aliphatic .alpha.,.omega.-dicarboxylic acid with xylylenediamines and a salt of a metal chosen from the transition metals of group VIIIA of the Periodic Table of the elements, manganese, zinc and copper; the polyamide (PA) contains less than 150 ppm of phosphorus.These compositions may be made into packaging materials, such as containers (bottles).Type: GrantFiled: January 3, 1992Date of Patent: April 12, 1994Assignee: Solvay (Societe Anonyme)Inventors: Momtaz Ardechir, Gauthy Fernand, Churin Esteban, Michel Claude
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Patent number: 5292794Abstract: A water washable protective coating composition for application to surfaces subjected to contact with airborne paints which composition comprises an ionomer of a copolymer of an acrylic acid and an alpha-olefin. The composition forms a protective, clear low-slip coating layer upon surfaces, and is readily removable with heated water.Type: GrantFiled: July 1, 1991Date of Patent: March 8, 1994Assignee: AlliedSignal Inc.Inventor: Michael A. Maginnis
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Patent number: 5292822Abstract: High-moisture absorbing and releasing fibers which have moisture-absorbing properties and moisture-releasing properties, are resistant to repetitive use, and have both flame resistance and antibacterial properties and a process for producing the same are provided.Acrylic fibers in which increase in nitrogen content by hydrazine cross-linking, an amount of salt type carboxyl groups and amido groups by modification of nitrile groups, tensile strength, LOI and sterilization rate are specifically adjusted. Such the fibers are obtained by hydrazine cross-linking treatment, hydrolysis treatment and conversion of the carboxyl groups to the salt type.High-moisture absorbing and releasing fibers having excellent processability in addition to flame resistance and antibacterial properties are obtained. Such the fibers can also be used repeatedly.Type: GrantFiled: November 10, 1992Date of Patent: March 8, 1994Assignee: Toyo Boseki Kabushiki KaishaInventors: Koji Tanaka, Kazutoshi Muta
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Patent number: 5292826Abstract: A process for preparing a resin having a low iodine value, comprising treating a resin having a residual unsaturated bond with a cationic polymerization catalyst. According to the process, a resin in which residual unsaturated bonds are decreased can be prepared, and the obtained resin having a low iodine value can be suitably used as raw materials for flame retarders, adhesives and the like.Type: GrantFiled: March 24, 1993Date of Patent: March 8, 1994Assignee: Arakawa Kagaku Kogyo Kabushiki KaishaInventors: Yoshiteru Manabe, Kiyoshi Sato, Toshihiko Izumi
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Patent number: 5290878Abstract: An elastomeric butadiene copolymer prepared by a process which comprises copolymerizing butadiene, a polyvinyl aromatic compound and optionally styrene in a hydrocarbon solvent in the presence of an organolithium polymerization initiator and subjecting the resulting copolymer having lithium at the polymer end or ends to a coupling reaction with a trifunctional or tetrafunctional coupling agent, said butadiene copolymer satisfying the following conditions: (a) the content of styrene is at most 50% by weight, (b) the content of vinyl bonds in the butadiene portion is from 10 to 90% by weight, (c) the molecular weight distribution curve obtained by a high performance liquid chromatography has at least three peaks, and 5 to 60% by weight of all the polymer chains have a molecular weight which is at least 5 times the molecular weight in terms of standard polystyrene corresponding to the peak appearing on the lowest molecular weight side of the high performance liquid chromatogram, and (d) the Mooney viscosity (ML.Type: GrantFiled: June 7, 1993Date of Patent: March 1, 1994Assignee: Sumitomo Chemical Company, LimitedInventors: Keisaku Yamamoto, Kizuku Wakatsuki, Mitsuji Tsuji, Yuichi Saito
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Patent number: 5281360Abstract: Blends of polymers, such as aromatic condensation polymers including formable polyesters and polycarbonates with an oxygen barrier material such as aromatic or aliphatic nylon, an amorphous nylon or EVOH, which have been oriented and which contain a transition metal catalyst, exhibit the improved barrier properties and oxygen absorption properties of the present invention.Type: GrantFiled: January 31, 1990Date of Patent: January 25, 1994Assignee: American National Can CompanyInventors: Kuo-Zong Hong, Yong J. Kim, Stephen W. Cornell
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Patent number: 5276094Abstract: An elastomeric polymer composition that exhibits improved processability and green strength comprises: from about 95 to about 70 parts by weight of one rubbery polymer selected from the group consisting of butyl rubber, chlorinated butyl rubber and brominated butyl rubber and from about 5 to about 30 parts by weight of a block copolymer having an elastomeric polyisobutylene midblock and two plastomeric endblocks of polymerized monovinylidene aromatic monomers and star-shaped block copolymers having from three to six arms wherein the inner elastomeric blocks are polyisobutylene and the outer plastomeric blocs are polymerized monovinylidene aromatic monmers for a total of 100 parts by weight of the rubbery polymer and the block copolymer. Vulcanizates of the composition that exhibit reduced permeability to gases and improved tear strength are provided together with a process for their production.Type: GrantFiled: November 12, 1992Date of Patent: January 4, 1994Assignee: Polysar Rubber Corp.Inventors: Gabor Kaszas, Judit E. Puskas
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Patent number: 5274175Abstract: A method for producing 4-acetoxystyrene by heating 4-acetoxyphenylmethylcarbinol, with an acid catalyst, at a temperature of from about 85.degree. C. to about 300.degree. C. under a pressure of from about 0.1 mm HgA to about 760 mm HgA for from about 0.2 minutes to about 10 minutes. The process also provides for the solventless (neat) hydrogenation of 4-acetoxyacetophenone to produce 4-acetoxyphenylmethylcarbinol. The reaction proceeds by heating at 54.degree. C. to 120.degree. C. with an excess of hydrogen in the presence of a Pd/C or activated nickel such as Raney Nickel catalyst in the absence of a solvent. The 4-acetoxyphenylmethylcarbinol may then be dehydrated to 4-acetoxystyrene. The later may be polymerized to poly(4-acetoxystyrene) and hydrolyzed to poly(4-hydroxystyrene).Type: GrantFiled: June 10, 1993Date of Patent: December 28, 1993Assignee: Hoechst Celanese CorporationInventors: Bakulesh N. Shah, Dung Q. Tran, Donna L. Keene
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Patent number: 5272220Abstract: The subject invention discloses a styrene-isoprene-butadiene rubber which is particularly valuable for use in making truck tire treads, said rubber being comprised of repeat units which are derived from about 5 weight percent to about 20 weight percent styrene, from about 7 weight percent to about 35 weight percent isoprene, and from about 55 weight percent to about 88 weight percent 1,3-butadiene, wherein the repeat units derived from styrene, isoprene and 1,3-butadiene are in essentially random order, wherein from about 25% to about 40% of the repeat units derived from the 1,3-butadiene are of the cis-microstructure, wherein from about 40% to about 60% of the repeat units derived from the 1,3-butadiene are of the trans-microstructure, wherein from about 5% to about 25% of the repeat units derived from the 1,3-butadiene are of the vinyl-microstructure, wherein from about 75% to about 90% of the repeat units derived from the isoprene are of the 1,4-microstructure, wherein from about 10% to about 25% of the reType: GrantFiled: September 14, 1992Date of Patent: December 21, 1993Assignee: The Goodyear Tire & Rubber CompanyInventors: Michael B. Rodgers, Stanley M. Mezynski, Adel F. Halasa, Wen-Liang Hsu, Barry A. Matrana, Joel L. Cox
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Patent number: 5247009Abstract: A rubber composition comprising a rubbery polymer and a modified liquid polymer. The modified liquid polymer is obtained by reacting a liquid polymer having at least one carbon-carbon double bond in the molecule with an organic compound having the group --CH.dbd.N-- and an organic acid halide having the group --COX where X is halogen, in the presence of a Friedel-Crafts catalyst.Type: GrantFiled: March 13, 1989Date of Patent: September 21, 1993Assignee: Nippon Zeon Co., Ltd.Inventor: Shizuo Kitahara
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Patent number: 5244929Abstract: Molded bodies in the form of packing bodies comprising a macroporous strongly acid or basic ion exchange resin having a voids fraction of 5-95 vol % of the macro shape without pores, a BET surface area of 0.1-1,000 sq m/g, and an ion exchange capacity of 0.05-10 meq/g.Type: GrantFiled: May 11, 1992Date of Patent: September 14, 1993Assignee: Veba Oel AktiengesellschaftInventors: Klaus Gottlieb, Wilfried Graf, Kuno Schadlich, Ulrich Hoffmann, Alwin Rehfinger, Jorg Flato
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Patent number: 5239016Abstract: A process for the production of a wall for a package including producing a preform of the wall and stretching the preform of the wall where the preform includes a layer containing a polymer and having oxygen-scavenging properties. The preform and the stretching ratios applied are chosen (i) so that the time (t.sub.I) which the permeance of the wall for oxygen would take to rise to 1/5 of the value it would have in the absence of oxygen scavenging would be at least 10 days and (ii) if the preform were stretched at that time (t.sub.I) after the preform were produced, the time (t.sub.D) which the permeance of the wall for oxygen would take to rise 1/5 of the value it would have in the absence of scavenging would be at least 1/4 of the time (t.sub.I). The time between completion of step (A) and the commencement of step (B) is at least 10 days.Type: GrantFiled: January 16, 1990Date of Patent: August 24, 1993Assignee: CMB Packaging (UK) LimitedInventors: Michael A. Cochran, Rickworth Folland, James W. Nicholas, Melvin E. R. Robinson
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Patent number: 5218004Abstract: Highly crosslinked styrenic copolymers are treated to enhance their surface area by reacting residual vinyl groups in the copolymers in the presence of water or other non-swelling liquid and a Lewis-acid catalyst at elevated temperatureType: GrantFiled: August 16, 1990Date of Patent: June 8, 1993Assignee: Rohm and Haas CompanyInventor: Thomas E. Meteyer
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Patent number: 5194514Abstract: A process for increasing the molecular weight of a polymer, comprising subjecting said polymer to electromagnetic radiation in the presence of a paramagnetic metallic catalyst for a sufficient period of time to significantly increase the molecular weight of the polymer, said polymer being either in solution or in a molten state and said radiation having a frequency in the range of about 0.9 to 10 GHz. The preferred paramagnetic catalysts are metallic nickel, iron or cobalt. The preferred polymers are polyamides and polyolefins.Type: GrantFiled: August 10, 1990Date of Patent: March 16, 1993Assignee: Du Pont Canada Inc.Inventors: Jeffrey K. Wan, Mary C. Depwe, Howard C. Ng
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Patent number: 5191029Abstract: Polymer compositions comprising a) one or more polymer(s) containing pendant and/or terminal phosphorus groups and b) one or more water-soluble polyvalent metal compound(s) functioning as a crosslinking agent are useful in coatings to give improved solvent resistance, chemical resistance, print resistance, corrosion resistance and adhesion to metal.Type: GrantFiled: August 19, 1991Date of Patent: March 2, 1993Inventor: Theodore A. DelDonno
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Patent number: 5189113Abstract: Ionically crosslinked ethylene copolymers are prepared by reacting the corresponding ethylene copolymer in a mixing zone of a twin-screw extruder with a solid metal compound and subsequently pumping in water, and are used as adhesion promoters, laminating films, injection molded articles or cable sheathing.Type: GrantFiled: June 14, 1989Date of Patent: February 23, 1993Assignee: BASF AktiengesellschaftInventors: Thomas Muehlenbernd, Norbert Hasenbein, Gernot Koehler, Lothar Schlemmer
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Patent number: 5171785Abstract: A pellicle film comprised of a resin prepared by reducing a polyvinyl acetal of the formula: ##STR1## wherein R is a C1-3 alkyl group and the vinyl acetate content "y/(x+y+z)" is not larger than 0.1 and the degree of acetalization "z/(x+y+z)" is at least 0.6. This pellicle film exhibits a reduced UV absorption in the vicinity of 365 nm and is durable against irradiation with UV rays, especially i-line of a mercury arc light.Type: GrantFiled: June 10, 1991Date of Patent: December 15, 1992Assignee: Tosoh CorporationInventors: Takashi Yamamoto, Katsuya Shibata, Tatsuki Suzuki, Toru Seita
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Patent number: 5149743Abstract: Novel halostyrene telechelic polymers having from 2 to about 6 terminal halogens, halostyrene-polyether, block copolymers having ABA type structures in star type structures, depending on the number of halogen terminii in the starting halostyrene block, and a process for their formation is described. The halostyrene polymers are formed by the initiator transfer agent or inifer polymerization method; while the polyether block is polymerized by silver catalysis of monomers such as tetrahydrofuran. The polymers and copolymers have good flame resistance.Type: GrantFiled: February 15, 1990Date of Patent: September 22, 1992Assignee: The University of AkronInventors: Joseph P. Kennedy, Miklos I. Zsuga
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Patent number: 5143985Abstract: Described are blends of a crystalline poly(aryl ether ketone) and a polyarylate and/or a liquid crystalline polyarylate. These blends exhibit improved mechanical properties and environmental stress rupture resistance.Type: GrantFiled: February 8, 1991Date of Patent: September 1, 1992Assignee: Amoco CorporationInventors: Lloyd M. Robeson, James E. Harris
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Patent number: 5137926Abstract: Polyaromatic fibers or microbeads which are swollen with solvent and crosslinked while swollen in such a way that the expanded, or macronet, structure of the swollen fiber or microbead is stabilized and retained even after drying exhibit high surface area and significant adsorptive capacity.Type: GrantFiled: May 8, 1991Date of Patent: August 11, 1992Assignee: Rohm and Haas CompanyInventors: Stephen G. Maroldo, Richard M. Kopchik, Eric J. Langenmayr
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Patent number: 5114709Abstract: The invention is concerned with a metal ion coordinated polyamine resin in which a non-toxic, pharmaceutically acceptable chelating metal ion is coordinated with a cross-linked and non-digestible polymeric amine selected from the group consisting of: (a) polyamine resins with a hydrophilic backbone, of the formula: ##STR1## wherein P represents a hydrophilic, cross-linked and non-digestible homopolymer backbone, m is an integer varying from 1 to 10 inclusive, and n, o and p are, independently, integers varying from 2 to 12 inclusive; (b) polyamine resins with a hydrophobic backbone, of the formula:P'--[NH(CH.sub.2).sub.n ].sub.m NH.sub.2 (II)wherein P' represents a hydrophobic, cross-linked and non-digestible homopolymer backbone, m is an integer varying from 0 to 6 inclusive and n is an integer varying from 2 to 12 inclusive; and (c) cross-linked copolymers of a polyethylenepolyamine containing from 2 to 6 ethylene units and epichlorohydrin.Type: GrantFiled: June 12, 1991Date of Patent: May 19, 1992Assignee: Lowchol Scientific Inc.Inventors: Leon E. St. Pierre, George R. Brown, Gaoming Wu, Youlu Yu
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Patent number: 5093434Abstract: This invention relates to compositions comprising an elastomeric material based on a styrene-butadiene-alkyl (meth) acrylate copolymer also including an ethylenically unsaturated carboxylic acid.The compositions are used for forming a sealing gasket for a container that contains an organic solvent, by crosslinking with a polyvalent metal crosslinking agent, and preferably also a vulcanizing crosslinking agent.The preferred ethylenically unsaturated carboxylic acid is itaconic acid.Type: GrantFiled: April 11, 1990Date of Patent: March 3, 1992Assignee: W. R. Grace & Co.-Conn.Inventor: Pierre-Marie Bernard
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Patent number: 5084533Abstract: A process for the solventless (neat) hydrogenation of 4-acetoxyacetophenone to produce 4-acetoxyphenyl methylcarbinol. The reaction proceeds by heating at 54.degree. C. to 120.degree. C. with an excess of hydrogen in the presence of a Pd/C or activated nickel such as Raney Nickel catalyst in the absence of a solvent. The 4-acetoxyphenyl methylcarbinol may then be dehydrated to 4-acetoxystyrene. The later may be polymerized to poly(4-acetoxystyrene) and hydrolyzed to poly(4-hydroxystyrene).Type: GrantFiled: July 25, 1990Date of Patent: January 28, 1992Assignee: Hoechst Celanese CorporationInventors: Bakulesh N. Shah, Donna L. Keene
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Patent number: 5077344Abstract: Method for modifying polymers with pendant carboxyl groups through reaction with nucleophilic reagent, e.g., sulfide, selenide, cyanide, to produce a carrier on which biologically active materials such as enzymes may be immobilized.Type: GrantFiled: July 20, 1987Date of Patent: December 31, 1991Inventors: Ole Buchardt, Henrik F. Hansen, Roald B. Jensen
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Patent number: 5049624Abstract: The present invention provides a wall for a package comprising: (a) an outer set of one or more layers (1-4) and (b) an inner set of one or more layers (5-6) which layer or the outermost of which layers (5) comprises a composition comprising a polymer and having oxygen-scavenging properties, wherein (i) the outer set of layers would have, if separate from the inner set and in the absence of any oxygen-scavenging properties in any of the layers or the layer constituting the set, a permeance, for oxygen, of not more than 1.5 cm.sup.3 /(m.sup.2 atm day); (ii) the inner set of layers would have, if separate from the outer set and in the absence of oxygen-scavenging properties in any of the layers or the layer constituting the set, a permeance, for oxygen, of at least 2.0 cm.sup.3 /(m.sup.2 atm day); and (iii) the inner set of layers would have, if separate from the outer set, a permeance, for oxygen, less than the permeance specified in (ii) by at least 1.0 cm.sup.3 /(m.sup.Type: GrantFiled: November 1, 1989Date of Patent: September 17, 1991Assignee: CMB Foodcan plcInventors: John F. Adams, Michael A. Cochran, Rickworth Folland, James W. Nicholas, Melvin E. R. Robinson
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Patent number: 5043395Abstract: There is disclosed an optical material comprising a cyclization product of a conjugated diene polymer having a cyclization ratio of not less than 80% or a hydrogenated product thereof.Type: GrantFiled: November 21, 1989Date of Patent: August 27, 1991Assignee: Nippon Zeon Co., Ltd.Inventors: Masayoshi Oshima, Tadao Natsuume
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Patent number: 5039757Abstract: This invention provides cationic acrylamide polymers which are highly effective as paper strength agents, drainage agents and suspension flocculants, and which do not show much temporal deterioration; it also provides a method of manufacturing said polymers wherein the manufacturing equipment is compact and can be installed on site, and the cationicity of the polymers can be modified in a short time.This invention comprises a method of manufacturing cationic acrylamide polymers by reaction, with a hypohalogenite, of a (meth)acrylamide homopolymer, a copolymer of (meth)acrylamide and acrylonitrile, a copolymer of (meth)acrylamide and N,N-dimethylacrylamide, in a high temperature range of 50.degree.-110.degree. C. for a short time; the polymers manufactured by said process; and paper strength agents, drainage agents and flocculants having these polymers as their principal constituent.Type: GrantFiled: December 21, 1989Date of Patent: August 13, 1991Assignee: Mitsui Toatsu Chemicals, Inc.Inventors: Toshihiko Takaki, Kenji Tsuboi, Hiroshi Itoh, Atsuhiko Nitta
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Patent number: 5032646Abstract: Substantially homogeneous (meth)acrylic acid/itaconic acid copolymers of number average molecular weight of 500 to 7000 are prepared by copolymerizing in aqueous solution 5 to 90 mole percent acrylic or methacrylic acid monomer with 95 to 10 mole percent itaconic acid monomer at 80.degree. to 120.degree. C. in the presence of a polymerization initiator, the acrylic or methacrylic acid monomer and at least half of the initiator being added separately and continuously to the itaconic acid monomer throughout the polymerization period. The copolymers are employed at a level of from about 0.1 to 100 ppm for prevention of alkaline calcium and magnesium scale formation, such as during seawater evaporative desalination.Type: GrantFiled: September 28, 1984Date of Patent: July 16, 1991Assignee: Pfizer Inc.Inventor: Stanley W. Walinsky
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Patent number: 5026783Abstract: A precursor route to the synthesis of polyacetylene and other conductive polymers is provided by the formation of high energy polymers by ring opening metathesis polymerization. In particular, the high energy polymers having the following general formula are formed from monomers as shown: ##STR1## In the formula, A is an organic structure that is relieved of strain upon the ring opening polymerization and B is an organic structure with strain energy.gtoreq.20 kcal/mole. Such high energy polymers are also found to be spontaneously decomposable with heat or mechanical stress. Consequently, the high energy polymers formed in accordance with the invention may find use in explosives or other sources of high energy.Type: GrantFiled: October 24, 1988Date of Patent: June 25, 1991Assignee: California Institute of TechnologyInventors: Robert H. Grubbs, Dennis A. Dougherty, Timothy M. Swager, Eric J. Ginsburg
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Patent number: 5021515Abstract: The present invention provides a wall for a package, which wall comprises, or includes a layer comprising, a composition comprising a polymer and capable of scavenging oxygen through the metal-catalysed oxidation of an oxidisable organic component thereof. The oxidisable organic component is preferably itself a polymer, and may be the only polymer in the composition. Preferred compositions include a blend of 96% polyethylene terephthalate and 4% poly (m-xylyleneadipamide) containing 200 ppm cobalt as catalyst, with good permeance-versus-time performance (3) when formed into a bottle.Type: GrantFiled: March 23, 1989Date of Patent: June 4, 1991Assignee: CMB Foodcan plcInventors: Michael A. Cochran, Rickworth Folland, James W. Nicholas, Melvin E. R. Robinson
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Patent number: 5011894Abstract: Described are blends of a crystalline poly(aryl ether ketone) and a polyarylate and/or a liquid crystalline polyarylate. These blends exhibit improved mechanical properties and environmental stress rupture resistance.Type: GrantFiled: August 22, 1989Date of Patent: April 30, 1991Assignee: Amoco CorporationInventors: Lloyd M. Robeson, James E. Harris
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Patent number: 5003001Abstract: Ionically crosslinked ethylene copolymers prepared by mixing a carboxyl-containing copolymer with an aqueous metal salt solution in the reaction zone of a twin-screw extruder and transferring the product to a devolatilization zone, and are used as adhesion promoters, injection molded articles or laminating films.Type: GrantFiled: June 14, 1989Date of Patent: March 26, 1991Assignee: BASF AktiengesellschaftInventors: Norbert Hasenbein, Lothar Schlemmer, Thomas Muehlenbernd, Gernot Koehler
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Patent number: 5002986Abstract: This invention relates to fluid absorbent polymer compositions having the ability to absorb aqueous ionic fluids and water rapidly and efficiently. These fluid absorbent polymer compositions are prepared from fine base polymer particles which are ionically surface crosslinked and agglomerated into larger particles by the use of high energy mixing conditions. The fluid absorbent compositions of the invention find application in the preparation of absorbent articles such as diapers, sanitary napkins and incontinent devices.Type: GrantFiled: February 28, 1989Date of Patent: March 26, 1991Assignee: Hoechst Celanese CorporationInventors: Yoji Fujiura, Takashi Sumiya