Metal Hydroxide Patents (Class 525/369)
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Patent number: 5519093Abstract: Amine functional polymers are prepared by polymerization of vinylamides with vinyl ester monomers. The resultant polymers are hydrolyzed under acid conditions and subsequently at least partially basified to the free-base amine. Byproduct salts are removed by precipitation or by extraction into an immiscible phase. The polymers made by this method are crosslinkable through reaction of the amine groups and are useful in high performance coatings, adhesives, binders and the like.Type: GrantFiled: May 11, 1994Date of Patent: May 21, 1996Assignee: Air Products and Chemicals, Inc.Inventors: Robert K. Pinschmidt, Jr., Khalil Yacoub
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Patent number: 5516853Abstract: The present invention relates to a process for the production of oxidatively crosslinkable, water-dilutable binders bya) forming a copolymer having intramolecular carboxylic anhydride groups by copolymerizing anhydride-functional compounds, other olefinically unsaturated monomers and 5 to 50% by weight, based on the weight of the olefinically unsaturated monomers used for the production of the copolymers a), of monomers which cannot be homopolymerized under the reaction conditions,b) subsequently reacting by ring-opening esterification at least 50% of the anhydride groups present in the copolymer with one or more unsaturated monohydric alcohols,c) reacting by ring-opening esterification up to 50% of the anhydride groups with monohydric saturated alcohols having a molecular weight of 32 to 200 either before, during or after step b),d) optionally reacting 1 to 70% of the carboxyl groups formed in steps b) and c) with organic epoxide compounds ande) neutralizing at least a portion of the carboxyl groups formed iType: GrantFiled: April 19, 1995Date of Patent: May 14, 1996Assignee: Bayer AktiengesellschaftInventors: Volker Schneider, Eberhard Arning, Harald Blum, Christian Wamprecht
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Patent number: 5504162Abstract: Salts of copolymers of ethylenically unsaturated carboxylic acids and ethylenically unsaturated fatty acid derivatives.Type: GrantFiled: January 4, 1994Date of Patent: April 2, 1996Assignee: Hoechst AktiengesellschaftInventors: Herbert Friedrich, Bernhard Mees, Richard Gruber
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Patent number: 5498674Abstract: A process for forming dielectric particles includes admixing a vinyl halide monomer and a crosslinker in a liquid dispersion medium to form a first mixture. A second mixture of an initiator and a stabilizer is prepared and added to the first mixture to form a third mixture in which the monomer polymerizes to form white crystalline polymer particles which are sonified for uniformity. The particles may be stained by exposure to a dehydrohalegenation reagent and dispersed in an electrophoretic fluid for use in an electrophoretic display.Type: GrantFiled: May 11, 1994Date of Patent: March 12, 1996Assignee: Copytele, Inc.Inventors: Wei-Hsin Hou, Thomas B. Lloyd, Frederic E. Schubert
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Patent number: 5496890Abstract: A process for the production of super-absorbent polymers with a swelling capacity in water-containing liquids of up to 1,000 g/g in which aqueous emulsions of particularly high molecular weight polymers of acrylonitrile are partly hydrolyzed by reaction with aqueous solutions of alkali metal and/or alkaline earth metal hydroxides, the polymers are precipitated in powder form by addition of water-miscible organic solvents, separated off, dried and then optionally heated for a short time. The super-absorbent polymers are used as water-storing materials, for example in sanitary articles, in agriculture or in the sheathing of electrical cables.Type: GrantFiled: February 21, 1995Date of Patent: March 5, 1996Assignee: Bayer AktiengesellschaftInventors: Gu/ nter Sackmann, Rolf-Volker Meyer, Siegfried Korte, Sergej Schapowalow
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Patent number: 5492977Abstract: Amino terminated polyacrylic acids and polyacrylic acrylates are prepared by free radical polymerization of the acid or acrylate monomers with t-Boc-aminoethanethiol as a chain transfer control agent followed by acid removal of the t-Boc group. The acids and their acrylates are precursors to form dispersants and to modify dyes.Type: GrantFiled: December 21, 1994Date of Patent: February 20, 1996Assignee: Lexmark International, Inc.Inventors: Bradley L. Beach, Anna M. Pearson, Jing X. Sun
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Patent number: 5478894Abstract: This invention is directed to a recurring polymeric moiety of the following formula: ##STR1## wherein R is independently selected from hydrogen and C.sub.1 to C.sub.4 alkyl; Y is independently selected from O and NH; and X is independently selected from Cl, F, Br, I, NO.sub.3, HSO.sub.4 and H.sub.2 PO.sub.4.Polymers of the above structure may be crosslinked by treating the polymer with a base and heating it.Type: GrantFiled: July 2, 1993Date of Patent: December 26, 1995Assignee: Hoechst Celanese CorporationInventors: William G. Chiang, Joy L. McCrickard
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Patent number: 5466757Abstract: A chlorinated ethylene-propylene copolymer having a chlorine content of 20 to 45% by weight and a Mooney viscosity (ML.sub.1+4, 100.degree. C.) of 10 to 150 is produced by chlorinating in two or three stages, by contact with chlorine gas in an aqueous suspension, an ethylene-propylene copolymer having a propylene content of 15 to 40% by weight, a melt flow index of 0.01 to 5.0 g/10 minutes, a melting peak as measured by differential scan calorimeter (DSC) of 80.degree. C. or more, a crystallinity as measured by X-rays of 3% or more, an index M.sub.W /M.sub.N of the distribution of molecular wieght, determined by gel permeation chromatography (GPC), of greater than 4, and a Mooney visocisty (ML.sub.1+4, 100.degree. C.) of 10 to 180.Type: GrantFiled: December 11, 1991Date of Patent: November 14, 1995Assignee: Showa Denko Kabushiki KaishaInventors: Naotoshi Watanabe, Tsuyoshi Masukawa, Kenji Ozaki, Noboru Moriwaki
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Patent number: 5453323Abstract: Super-absorbent polymers having superior dryness properties when incorporated into absorbent articles are made from acrylic acid and crosslinking agent polymerized under controlled conditions.Type: GrantFiled: June 9, 1993Date of Patent: September 26, 1995Assignee: Hoechst Celanese CorporationInventors: Douglas R. Chambers, Hubert H. Fowler, Jr., Yoji Fujiura, Fusayoshi Masuda
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Patent number: 5447979Abstract: Organophosphonic polymers of general formula (I) where Y is a methyl or ethyl group or hydrogen and Z is hydrogen, the ammonium group, an alcaline metal or an alcaline earth metal. A method for producing these polymers comprises three stages: production of a monomer by reacting a ketene with diethylphosphite in the presence of an acid catalyst; polymerization of the monomer in solution in a solvent by means of a free radical initiator; hydrolysis of the polymer obtained by means of a concentrated solution of inorganic or inorganic based acid. Aqueous solution of hydrogen peroxyde stabilized by means of said polymers.Type: GrantFiled: June 2, 1993Date of Patent: September 5, 1995Assignee: Interox (Societe Anonyme)Inventors: Dirck Van Hemelrijk, Jean-Marc Coisne, Aloysius Tinnemans
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Patent number: 5442014Abstract: Particulates of a superabsorbent partially, neutralized acrylic polymer, e.g., polyacrylic acid, having a mean particle size ranging from 100 to 500 .mu.m, essentially monodisperse and essentially devoid of fines having a particle size of less than 100 .mu.m, having a nonuniformly surfaced spheroidal particle morphology and containing less than 50 ppm of residual monomer, well suited for a variety of hygienic applications, are prepared by (i) polymerizing a suspension of an acrylic monomer charge I in an organic medium and producing a suspension of acrylic polymer gel particles, (ii) next absorbing a second acrylic monomer charge II into the gel particles, (iii) polymerizing in the gel particles the second acrylic monomer charge II, (iv) azeotropically dehydrating the acrylic polymer particulates thus obtained, (v) then treating the dehydrated particulates with hydrogen peroxide, and (vi) drying the superabsorbent particulates thus treated.Type: GrantFiled: September 13, 1994Date of Patent: August 15, 1995Assignee: Elf Atochem S.A.Inventors: Shu R. Rebre, Christian Collette, Sandrine Denie
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Patent number: 5430111Abstract: A uniquely treated bead of ethylene acrylic acid (EAA) capable of forming a high solids aqueous dispersion in excess of 38% solids wherein the EAA may be prepared by either batch or continuous processes wherein the EAA is substantially fully reacted with ammonia, sodium or potassium in little or substantial absence of water, followed by a separate aqueous dispersion step, resulting in a unique and quick-drying dispersion material highly useful in coating, adhesive, laminating, ink and similar processes, and wherein operating expense and environmental concerns are at a minimum as a consequence thereof.The treated EAA may be prepared in a substantially dry to merely moist state for incorporation into an aqueous dispersion with high percentages of EAA having either higher or lower molecular weight with low viscosities as compared to heretofore.Type: GrantFiled: July 21, 1993Date of Patent: July 4, 1995Assignee: Dominion Chemical CompanyInventors: Frank P. Recchia, Wilson M. Ferrell, W. Maclin Ferrell, Jr.
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Patent number: 5422401Abstract: A modified .alpha.-olefin polymer whose side chain has tertiary carbon, obtained by melt-reacting 100 parts by weight of (A) an .alpha.-olefin polymer whose side chain has tertiary carbon with (B) 0.05 to 10 parts by weight of metal methacrylate or metal acrylate of the formula (1), ##STR1## wherein R is a hydrogen atom or a methyl group, M is a metal cation, X is an anion, m is an integer of at least 2, and n is an integer of at least 2, with a proviso of m.gtoreq.n; and a stretched film thereof.Type: GrantFiled: March 17, 1994Date of Patent: June 6, 1995Assignee: Mitsui Petrochemical Industries, Ltd.Inventors: Kojiro Kan, Katsumi Noritomi
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Patent number: 5399624Abstract: A treatment method for polyene resins used in thiol-ene formulations, especially norbornene resins, significantly stabilizes thiol-ene compositions made from batches of polyene resin which otherwise give compositions with poor dark stability. The treatment comprises contacting the polyene with an amphoteric treating agent selected from the group consisting of silicated magnesium oxide, basic aluminum oxide, silica gel, magnesium oxide, magnesium hydroxide, calcium oxide, calcium hydroxide, barium oxide, and barium hydroxide, and then separating the resin from the treating agent prior to mixture with a polythiol to form a thiol-ene composition. The treatment method significantly reduces ionic content in polyene resins, particularly chloride ion but also sodium and potassium ions. Consequently, treatment is also beneficial with polyene resins which do not produce substantial dark stability problems.Type: GrantFiled: April 30, 1993Date of Patent: March 21, 1995Assignee: Loctite CorporationInventors: David M. Glaser, Anthony F. Jacobine, Paul J. Grabek
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Patent number: 5393845Abstract: The invention relates to a process for the continuous production of polyacrylonitrile hydrolyzates and to their use as dispersion and grinding aids for pigments and fillers, such as for example kaolin, CaCO.sub.3 or gypsum.Type: GrantFiled: December 16, 1993Date of Patent: February 28, 1995Assignee: Wolff Walsrode AGInventors: Siegfried Korte, Heinrich Alberts, Branislav Bohmer, Werner Karstens, Wolfgang Koch, Hans-Gunter Poersch-Panke, Klaus Szablikowski
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Patent number: 5387635Abstract: Aqueous dispersions of ethylene/.alpha.,.beta.-unsaturated carboxylic acid interpolymers (e.g., random ethylene/acrylic acid interpolymers) are formed using a mixture of bases at a concentration of at least 0.2 equivalents of base per mole of .alpha.,.beta.-unsaturated carboxylic acid. The dispersions have at least 10 weight percent dispersed solids and not more than 1 weight percent of the initial polymer in non-dispersed form. Preferred bases for use in forming the dispersions are ammonium hydroxide and/or alkali metal hydroxides. A mixture of ammonium hydroxide and potassium hydroxide is especially preferred for forming the dispersions with ethylene/acrylic acid interpolymers at an ammonium hydroxide:acrylic acid molar ratio of 1:1 and a potassium hydroxide:acrylic acid molar ratio in the range of 0.6-0.8:1. The dispersions are particularly useful in forming thin coatings of adhesive on substrates, such as paper and metal foil, using conventional techniques.Type: GrantFiled: August 27, 1992Date of Patent: February 7, 1995Assignee: The Dow Chemical CompanyInventors: Michael E. Rowland, Kenneth E. Springs
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Patent number: 5374687Abstract: A pourable, liquid antisettling composition comprises at least one low molecular weight copolymer of ethylene and an alpha, beta-ethylenically unsaturated carboxylic acid that has been neutralized with a neutralizing agent and water. The composition can be an additive in aqueous coating compositions and provides excellent pigment suspension and rheological properties to aqueous based coating and ink compositions.Type: GrantFiled: December 28, 1993Date of Patent: December 20, 1994Assignee: Rheox, Inc.Inventors: Murray C. Cooperman, William W. Reichert
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Patent number: 5369185Abstract: Resins which comprise polymers which contain multiple acetal groups have been developed which are useful for crosslinking and adhesion promotion in coating and adhesive applications. The polymers which make up these resins are prepared by the addition of aminoacetals to polymers containing anhydride functionality. The polymers are modified by titration with a tertiary amine or alkali base.Type: GrantFiled: December 23, 1993Date of Patent: November 29, 1994Assignee: Air Products and Chemicals, Inc.Inventors: William F. Burgoyne, Jr., Jeremiah P. Casey, Thomas A. Manuel, Joel E. Goldstein
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Patent number: 5369188Abstract: A process comprising the direct addition of a halogenated carboxylic acid to an olefin-containing compound is disclosed, as well as the resulting adduct and saponified adduct.Type: GrantFiled: February 11, 1993Date of Patent: November 29, 1994Assignee: E. I. Du Pont de Nemours and CompanyInventor: Young H. Kim
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Patent number: 5369132Abstract: A method for producing an acrylonitrile crosslinked copolymer, which comprises copolymerizing, as polymerizable monomers, acrylonitrile, an alkyl ester of acrylic acid or methacrylic acid, an aliphatic or alicyclic crosslinkable unsaturated monomer having at least two allyl groups, and an aromatic crosslinkable polyunsaturated monomer, in the presence of from 10 to 45% by weight, based on the total amount of the polymerizable monomers, of an inert organic solvent having a specific gravity of at least 1.0.Type: GrantFiled: February 9, 1994Date of Patent: November 29, 1994Assignee: Mitsubishi Kasei CorporationInventors: Tsuyoshi Ito, Junya Watanabe, Shintaro Sawada
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Patent number: 5360689Abstract: A process for forming dielectric particles includes admixing a vinyl halide monomer and a crosslinker in a liquid dispersion medium to form a first mixture. A second mixture of an initiator and a stabilizer is prepared and added to the first mixture to form a third mixture in which the monomer polymerizes to form white crystalline polymer particles which are sonified for uniformity. The particles may be stained by exposure to a dehydrohalegenation reagent and dispersed in an electrophoretic fluid for use in an electrophoretic display.Type: GrantFiled: May 21, 1993Date of Patent: November 1, 1994Assignee: Copytele, Inc.Inventors: Wei-Hsin Hou, Thomas B. Lloyd, Frederic E. Schubert
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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: 5319025Abstract: Fluorocarbon elastomer gum is compounded with curing agent comprising a polyhydroxy compound and a salt thereof with a salt-forming heterocyclic amine, the resulting compound gum is shaped and heated to form a cured shaped article such as automotive fuel line hose or O ring.Type: GrantFiled: January 15, 1993Date of Patent: June 7, 1994Assignee: Minnesota Mining and Manufacturing CompanyInventor: Jeffrey D. Weigelt
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Patent number: 5317063Abstract: A water-soluble polymer sensitive to salts is a copolymer of (A) 10 to 90% of acrylic acid and/or methacrylic acid; and (B) 90 to 10% of a vinyl monomer of Formula (I): ##STR1## (wherein R represents a hydrogen atom or a methyl group; and R.sup.1 represents an aryl group or a cycloalkyl group); or the foregoing component (A); (B) 2 to 70% of a vinyl monomer of Formula (II): ##STR2## (wherein R.sup.2 represents an alkyl group, an aryl group or a cycloalkyl group); and (C) 2 to 40% of a vinyl monomer of Formula (III): ##STR3## (wherein R.sup.3 represents an aryl group), 2 to 70 mole % of the repeating units derived from the acrylic acid and/or methacrylic acid being in the form of a salt. It is soluble in tap water, but insoluble in an aqueous solution containing not less than 0.5% of an inorganic salt of a monovalent ion.Type: GrantFiled: February 19, 1991Date of Patent: May 31, 1994Assignee: Lion CorporationInventors: Masanori Komatsu, Yasuo Iida
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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: 5296562Abstract: New polymers are disclosed to be made in supported Ziegler-Natta systems. They include monomers exhibiting polar functionality such as through a hydroxyl group or other functional group protected during polymerization in the presence of highly active catalysts by the use of a protective alkyl silane group which is removed after polymerization to restore the functionality of the group. The typical polymer thus made is a polyolefin having functional groups on its backbone; the functional groups may be reacted with conventional dyes and/or may perform other functions and enter reactions with other reactive compounds.Type: GrantFiled: March 18, 1993Date of Patent: March 22, 1994Assignee: Aristech Chemical CorporationInventors: Andrew J. Sivak, Leonard A. Cullo
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Patent number: 5294679Abstract: New polymers are disclosed to be made in supported Ziegler-Natta systems. They include monomers exhibiting polar functionality such as through a hydroxyl group or other functional group protected during polymerization in the presence of highly active catalysts by the use of a protective alkyl silane group which is removed after polymerization to restore the functionality of the group. The typical polymer thus made is a polyolefin having functional groups on its backbone; the functional groups may be reacted with conventional dyes and/or may perform other functions and enter reactions with other reactive compounds.Type: GrantFiled: March 18, 1993Date of Patent: March 15, 1994Assignee: Aristech Chemical CorporationInventors: Andrew J. Sivak, Leonard A. Cullo
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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: 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: 5290880Abstract: N-vinylformamide is polymerized with or without other water-soluble monoethylenically unsaturated monomers and with or without water-insoluble monoethylenically unsaturated monomers in not less than 30% strength by weight aqueous monomer solutions in the presence of a polymerization initiator at not more than 150.degree. C. in a kneader by a method in which the polymerization is carried out to such an extent that the initially formed water-containing polymer gel disintegrates into fine particles and the finely divided polymer obtainable in this manner is hydrolyzed, preferably in the kneader, so that not less than 0.1 mol % of the N-vinylformamide units present in the polymer are converted into vinylamine units. The polymers obtainable in this manner dissolve readily in water. The aqueous solutions are used, for example, in papermaking and tertiary oil production.Type: GrantFiled: February 27, 1991Date of Patent: March 1, 1994Assignee: BASF AktiengesellschaftInventors: Dietmar Moench, Michael Kroener, Enrique Freudenberg, Heinrich Hartmann, Norbert Sendhoff
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Patent number: 5290867Abstract: A process for producing an emulsion graft copolymer, which comprises grafting a vinyl aromatic monomer and a comonomer onto a rubber latex in the presence of an iron (II) redox system as polymerization catalyst and coagulating the graft copolymer latex with an alkaline earth metal compound, characterized in that the pH of the coagulated slurry is adjusted to a value ranging from 8 to 12a) by addition of an alkali metal hydroxide to the obtained slurry after coagulation,b) by addition of an alkali metal hydroxide to the graft copolymer latex before coagulation, orc) by coagulating the graft copolymer latex with an alkaline earth metal hydroxide,with the proviso that the solidified product of the slurry obtained according to a), b) or c) is not washed with acidified water in a subsequent processing step.Graft copolymers are used e.g. for reinforcement of natural rubber, modification of rubber-based adhesives, in fibres, or in films.Type: GrantFiled: October 26, 1992Date of Patent: March 1, 1994Assignee: Ciba-Geigy CorporationInventors: Bernard Gilg, Kurt Stinsky
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Patent number: 5286806Abstract: Dispersions of finely divided high molecular weight polyacrylamide particles are formed and treated with a caustic material to hydrolyze the polymer without undesirable side chain reactions to form high molecular weight anionic acrylamide polymers. A preferred technique for forming these products comprises the formation of a stabilized water-in-oil emulsion of aqueous acrylamide monomer, polymerizing the monomer, reacting the polymer emulsion thus formed with a hydrolysis agent and inverting the resultant hydrolyzed polymers into solution. These materials are useful in a variety of industrial applications for removing particulates from effluent streams.Type: GrantFiled: May 14, 1993Date of Patent: February 15, 1994Assignee: American Cyanamid CompanyInventors: Roger E. Neff, Roderick G. Ryles
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Patent number: 5280083Abstract: Calcium aluminum hexahydrate is a useful curative-stabilizer for halogenated rubbers such as chloronated polyethylene, chlorosulfonated polyethylene and polychloroprene as it can yield vulcanizates free of leachable lead. Also, these vulcanizates with about 1 to about 30 or more parts with about 3 to about 15 parts calcium aluminum hexahydrate being highly desirable give satisfactory to improved heat ageing properties as well as oil ageing properties.Type: GrantFiled: August 3, 1992Date of Patent: January 18, 1994Assignee: The Goodyear Tire & Rubber CompanyInventors: Carol L. Forste, Mervin V. Pilkington
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Patent number: 5274041Abstract: A golf ball having excellent impact resilience and good flying performance comprises a core and a cover for covering the core, wherein the cover contains an ionomer resin as a main material and the ionomer resin has the first peak at 85.degree. to 95.degree. C. and the second peak at 70.degree. to 80.degree. C. in its crystal melting behavior attended with the measurement by a differential scanning calorimeter. A process for producing the above golf ball is also disclosed.Type: GrantFiled: October 17, 1991Date of Patent: December 28, 1993Assignee: Sumitomo Rubber Industries, Ltd.Inventor: Mikio Yamada
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Patent number: 5266653Abstract: Poisoning or deactivation of conventional homogeneous catalysts to be used in hydrogenation of the backbone unsaturation in liquid monofunctional and difunctional-terminated conjugated diene polymers, is prevented by reacting a blocking agent compound with the functional end groups present in these polymers. More specifically, subsequent to formation of a selected starting material monofunctional or difunctional-terminated conjugated diene polymer, a suitable blocking agent is reacted with the functional end groups of the polymer enabling relatively inexpensive titanium, iron, cobalt, or nickel-based homogeneous catalysts to be used in hydrogenating the backbone unsaturation of the polymer to a high degree. Subsequent to hydrogenation, the polymer is subjected to conventional hydrolysis using a mineral acid or base to remove the blocking groups and return the hydrogenated conjugated diene polymer to its original functionality.Type: GrantFiled: June 5, 1991Date of Patent: November 30, 1993Assignee: The B. F. Goodrich CompanyInventor: Tonson Abraham
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Patent number: 5256737Abstract: Solid salts of cross-linked acrylic acid polymers or copolymers with alkali or aliphatic amines, useful as thickening agents, a process for the preparation thereof and the use thereof in the chemical, pharmaceutical, cosmetic, textile, paper industries.Type: GrantFiled: October 29, 1991Date of Patent: October 26, 1993Assignee: Sigma Prodotti Chimici S.p.A.Inventor: Massimo Barzaghi
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Patent number: 5254636Abstract: This invention relates to a process which significantly reduces the time for hydrolyzing a crosslinked maleic anhydride/lower alkyl vinyl ether copolymer to a clear gel which comprises suspending or dispersing fine granules of the crosslinked copolymer in deionized water and agitating the resulting dispersion or suspension for a period of between about 15 and about 130 minutes at a temperature of from about 60.degree. to about 90.degree. C. and then cooling the hydrolyzed mixture before introducing a basic neutralizing agent at a temperature of from about 15.degree. to about 85.degree. C. to produce a clear, homogeneous hydrolyzed gel having a Brookfield viscosity of from 5,000 to 250,000 cps.Type: GrantFiled: May 28, 1992Date of Patent: October 19, 1993Assignee: ISP Investments Inc.Inventors: Yoon T. Kwak, Stephen L. Kopolow
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Patent number: 5231145Abstract: Copolymers suitable for use as temporary surface protection for two- or three-dimensional structures and as sizing agents are based on C.sub.1 -C.sub.8 -alkyl acrylates and/or methacrylates and are obtainable by free radical emulsion or solution polymerization ofA) from 50 to 95% by weight of a C.sub.1 -C.sub.8 -alkyl acrylate or methacrylate,B) from 5 to 20% by weight of an unsaturated carboxylic acid or anhydride,C) from 0 to 20% by weight of further water-soluble comonomer, andD) from 0 to 10% by weight of other comonomer in the presence ofE) from 2 to 60 parts by weight of a polyvinyl alcohol per 100 parts by weight of the monomer mixture of A) to D).Type: GrantFiled: April 2, 1991Date of Patent: July 27, 1993Assignee: BASF AktiengesellschaftInventors: Ralf Brueckmann, Holger Schoepke, Thomas Wirth, Juergen Hartmann
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Patent number: 5227390Abstract: A polyvinyl halide ionomer which contains in the polymer backbone at least one vinyl halide monomer in polymerized form or at least one vinyl halide monomer and at least one other monomer copolymerizable with vinyl chloride and less than 50% by weight of the ionomer a comonomer containing at least one ester group and at least one neutralized carboxyl group. The ionomer is prepared by neutralizing, preferably in a molten state, a functionalized vinyl halide copolymer containing pendant carboxyl groups. The ionomer has outstanding adhesion to metals and its glass transition temperature is higher than the carboxyl vinyl halide copolymer.Type: GrantFiled: July 16, 1990Date of Patent: July 13, 1993Assignee: The B. F. Goodrich CompanyInventors: Zaev Sharaby, Murali Rajagopalan
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Patent number: 5218057Abstract: Disclosed is a method for saponifying an ethylene-alkyl acrylate copolymer comprising mixing together an ethylene-alkyl acrylate copolymer and an aqueous solution of an inorganic alkali metal base at a temperature sufficient for saponification to take place and at which the ethylene-alkyl acrylate copolymer undergoes a phase change.Type: GrantFiled: July 10, 1991Date of Patent: June 8, 1993Assignee: Chevron Research and Technology CompanyInventors: Victor P. Kurkov, Leslie P. Theard
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Patent number: 5216082Abstract: A clear impact resistant molding compound which does not become cloudy under either the influence of heat or moisture or on weathering and is composed according to the invention of:A) 10 to 90 percent by weight of a continuous rigid phase, essentially of methyl methacrylate, having a glass transition temperature greater than 70.degree. C. andB) 90 to 10 percent by weight of an elastomeric phase, distributed in the rigid phase and partly bound thereto, having a glass transition temperature below -10.degree. C., an average particle size of the elastomeric phase below 130 nm, and an inhomogeneity, U, of the elastomeric phase particle size of less than 0.5, comprising at least 50 percent by weight of B) of a lower alkyl acrylate and 0.5-5 percent by weight of a graft cross linking agent or an at least trifunctional cross linking agent,C) not more than 0.05 percent by weight of water soluble components,where U=D.sub.w.sup.3 /D.sub.n.sup.3- 1D.sub.w and D.sub.Type: GrantFiled: December 27, 1991Date of Patent: June 1, 1993Assignee: Rohm GmbHInventors: Ernst Heil, Uwe Numrich, Walter Schellhaas, Barbara Geppart, Thomas Rhein
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Patent number: 5206279Abstract: Aqueous dispersions of ethylene/.alpha.,.beta.-unsaturated carboxylic acid interpolymers (e.g., random ethylene/acrylic acid interpolymers) are formed using a mixture of bases at a concentration of at least about 0.2 equivalents of base per mole of .alpha.,.beta.-unsaturated carboxylic acid. The dispersions have at least about 10 weight percent dispersed solids and not more than about 1 weight percent of the initial polymer in non-dispersed form. Preferred bases for use in forming the dispersions are ammonium hydroxide and/or alkali metal hydroxides. A mixture of ammonium hydroxide and potassium hydroxide is especially preferred for forming the dispersions with ethylene/acrylic acid interpolymers at an ammonium hydroxide:acrylic acid molar ratio of about 1:1 and a potassium hydroxide:acrylic acid molar ratio in the range of about 0.6-0.8:1. The dispersions are particularly useful in forming thin coatings of adhesive on substrates, such as paper and metal foil, using conventional techniques.Type: GrantFiled: January 25, 1991Date of Patent: April 27, 1993Assignee: The Dow Chemical CompanyInventors: Michael E. Rowland, Kenneth E. Springs
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Patent number: 5194512Abstract: A composition is disclosed herein which comprises a core of a polyacrylonitrile homopolymer or copolymer and a surface of N-haloamides. Also disclosed is a process for the production of said composition.Type: GrantFiled: July 1, 1991Date of Patent: March 16, 1993Assignee: American Cyanamid CompanyInventors: Laurence Wu-Kwang Chang, Larry S. Anderson, David A. Ley
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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: 5175193Abstract: The invention relates to an environment-friendly process for the preparation of weakly acid cation exchange resins by hydrolysis of crosslinked acrylonitrile bead polymers with an alkaline hydrolizing agent at elevated temperature, according to which the bead polymer and alkaline hydrolizing agent are brought together at elevated temperature only.Type: GrantFiled: January 7, 1991Date of Patent: December 29, 1992Assignee: Bayer AktiengesellschaftInventors: Harold Heller, Friedrich Werner, Alfred Mitschker, Herbert V. Diehl, Axel Schafer
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Patent number: 5137975Abstract: A method for the treatment of melt-grafted polypropylene to improve adhesive properties thereof is disclosed. Molten grafted polypropylene, formed by melt grafting polypropylene with an alpha,beta unsaturated carboxylic acid or anhydride, is treated in melt processing apparatus with a minor amount of an aqueous solution of an alkaline material e.g. an aqueous solution of sodium hydroxide. The thus treated grafted polypropylene is separated from the aqueous solution and recovered e.g. in the form of pellets. The melt-grafted polypropylene may be formed in the melt processing apparatus prior to treatment with the aqueous solution or polypropylene that has been grafted in a previous operation may be fed to the apparatus. The treated polymer may be used in adhesive formulations.Type: GrantFiled: November 17, 1989Date of Patent: August 11, 1992Assignee: Du Pont Canada Inc.Inventor: Eric C. Kelusky
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Patent number: 5100971Abstract: For the preparation of acrylate and/or methacrylate polymers containing carbazolyl side groups, polymers of acryloyl chloride and/or of methacryloxyl chloride are subjected to a polymer-analogous reaction in solution with alcoholates of N-(.omega.-hydroxyalkyl)-carbazoles. The poly(meth)acrylates containing carbazolyl side groups and prepared in this manner have good photoconductor properties and can advantageously be used in electrophotographic recording elements.Type: GrantFiled: February 8, 1990Date of Patent: March 31, 1992Assignee: BASF AktiengesellschaftInventors: Reinhold J. Leyrer, Harald Lauke, Peter Strohriegl, Dietrich Haarer
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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: 5093433Abstract: A process for preparing a functionalized petroleum resin which comprises the steps of: dissolving a petroleum resin having a norbornene moiety with a double bond in a solvent to form a solution; adding to the solution a borane compound having the formula: ##STR1## wherein R.sub.1 and R.sub.2 are alkyl or cycloalkyl groups having about 1 to about 10 carbonations; reacting said petroleum resin with said borane compound at about room temperature for a sufficient period of time to form a borane intermediate; and reacting said borane intermediate with a chemical agent to convert said borane intermediate into said functionalized petroleum resin.Type: GrantFiled: March 19, 1990Date of Patent: March 3, 1992Assignee: Exxon Research and Engineering CompanyInventors: Tze-Chiang Chung, Encok Berluche, Jan Bock, Rodney V. Kastrup