Contains Group Ia (li, Na, K, Rb, Cs, Fr) Or Group Iia (be, Mg, Ca, Sr, Ba, Ra) Elemental Metal Or Compound Thereof Patents (Class 525/366)
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Patent number: 5321093Abstract: A process for preparing bifunctional living polymers which are able to forth bifunctional telechelic polymers or block copolymers with at least 3 blocks of conjugated dienes and/or vinylaromatics with molecular weights of from 1,500 to 500,000, by bifunctional initiators whose anionic centers are aliphatic carbon atoms which are substituted by lithium and an aliphatic hydrocarbon radical as well as by either 2 aryl radicals or by one aryl radical and one hydrogen radical, where one of the aryl radicals can also be part of the two anionic centers, in a first stage being reacted in the presence of not more than 2.5 moles of an aliphatic ether or a tertiary amine per mole of lithium and not less than 2 mol/l of a conjugated diene at from -40.degree. to +35.degree. C. with not less than two moles of diene, resulting in the formation of low molecular weight diene oligomers which in turn act as bifunctional initiators, and using the latter in a second reaction stage in a conventional manner at above 40.degree. C.Type: GrantFiled: September 24, 1991Date of Patent: June 14, 1994Assignee: BASF AktiengesellschaftInventors: Klaus Bronstert, Konrad Knoll, Erich Haedicke
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Patent number: 5319036Abstract: Compositions containing polyacrylate rubbers having dual curing sites are cured using an improved curing system comprising an alkali metal of a long chain carboxylic acid, a tertiary amine having a two methyl groups and a longer chain alkyl group, and a disubstituted urea. The compositions are shelf stable, have a high degree of scorch safety and cure rapidly at curing temperatures without adversely affecting the compression set of the cured article.Type: GrantFiled: June 23, 1993Date of Patent: June 7, 1994Assignee: Zeon Chemicals U.S.A., Inc.Inventor: Robert D. DeMarco
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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: 5314952Abstract: The processes for producing highly water absorptive resins of the present invention comprise the following steps: (A) suspending an aqueous solution of partially neutralized alkali metal acrylate and optionally partially neutralized acrylamido alkane sulfonate in a hydrocarbon solvent containing a surfactant having a HLB value of 3.apprxeq.6 or 8.apprxeq.Type: GrantFiled: April 22, 1991Date of Patent: May 24, 1994Assignee: Lucky, Ltd.Inventors: Su B. Choi, Huyng M. Lee, Myung J. Kim, Tae H. Jang
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Patent number: 5314967Abstract: A process for producing isomerized partially hydrogenated diene polymers containing unsaturation in endo and exo trisubstituted chain configurations while substantially eliminating the unsaturation in the 1,4-trans configuration remaining after hydrogenation, by isomerizing the unsaturation in the presence of a phosphine, borane, or alkali alkoxide isomerizing agent.Type: GrantFiled: August 24, 1993Date of Patent: May 24, 1994Assignee: Bridgestone/Firestone, Inc.Inventors: William L. Hergenrother, John M. Doshak
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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: 5308701Abstract: A method for encapsulating biologically-labile materials such as proteins, liposomes, bacteria and eucaryotic cells within a synthetic polymeric capsule, and the product thereof, are disclosed. The method is based on the use of a water-soluble polymer with charged side chains that are crosslinked with multivalent ions of the opposite charge to form a gel encapsulating biological material, that is optionally further stabilized by interactions with multivalent polyions of the same charge as those used to form the gel. In the preferred embodiment, hydrolytically stable polyphosphazenes are formed of monomers having carboxylic acid side groups that are crosslinked by divalent or trivalent cations such as Ca.sup.2+ or Al.sup.3+, then stabilized with a polycation such as poly-L-lysine. A variety of different compositions can be formed from the crosslinked polymer.Type: GrantFiled: May 8, 1992Date of Patent: May 3, 1994Inventors: Smadar Cohen, Carmen Bano, Karyn B. Visscher, Marie B. Chow, Harry R. Allcock, Robert S. Langer
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Patent number: 5298571Abstract: Ionomers derived from ethylene/methacrylic acid or ethylene/acrylic acid copolymers, containing high levels of acid neutralized with lithium, zinc and sodium are blended in defined amounts to form compositions with very high resilience. The compositions are highly suitable for use as golf ball covers.Type: GrantFiled: June 30, 1993Date of Patent: March 29, 1994Assignee: E. I. Du Pont de Nemours and CompanyInventors: Robert J. Statz, John F. Hagman
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Patent number: 5298569Abstract: A bioactive substance control-releasing resinous composition comprising a resin having main chain and side chains, at least one side chain bearing at the end portion thereof an organic acid moiety having a biological activity, through a metal ester bonding. The resin is hydrolyzed in an ionic atmosphere at a controlled rate to generate a bioactive substance as well as metal ions and is useful in various fields and especially as a resinous vehicle for a coating composition.Type: GrantFiled: January 7, 1993Date of Patent: March 29, 1994Assignee: Nippon Paint Co.Inventors: Naoki Yamamori, Hiroharu Ohsugi, Yoshio Eguchi, Junji Yokoi
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Patent number: 5280095Abstract: A fine particulate crosslinked type N-vinylcarboxylic acid amide resin having an average particle size of 10 .mu.m or less comprising backbone chains of a homopolymer or copolymer comprising repeating units (A) or (A) and (B) of the formulae: ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 each independently represent a hydrogen atom or methyl group; X represents a group --COOY, wherein Y represents a hydrogen atom, an alkali metal, a C.sub.1 -C.sub.Type: GrantFiled: June 28, 1991Date of Patent: January 18, 1994Assignee: Showa Denko K.K.Inventors: Toshiyuki Aizawa, Hitoshi Nakamura, Tetsuhiko Yamaguchi
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Patent number: 5278248Abstract: Water-soluble polymers and/or copolymers possessing enhanced biodegradability, and their applications are disclosed.Acrylic and/or vinyl polymers and/or copolymers containing acid groups, in which 35% to 90% of the active acid sites are neutralized by magnesium ions, the specific viscosity is at most 25, and biodegradability is enhanced. Their decomposition after 36 days is greater than 50% as measured by the modified Sturm test.These polymers can be used in industries as varied as: paper-making, paints, plastics, petroleum, drilling fluids, water treatment, detergents, cosmetics, textiles, inks, leather, grinding and/or splitting of minerals in water.Type: GrantFiled: November 10, 1992Date of Patent: January 11, 1994Assignee: Coatex S.A.Inventors: Jean-Bernard Egraz, Georges Ravet, Jacky Rousset
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Patent number: 5276101Abstract: A process is provided to functionalize hydrogenated block copolymers of vinyl aromatics and conjugated diolefin in a melt phase. The functionality is predominantly grafted to vinyl aromatic blocks by this process. The process is preferably performed in an extruder.Type: GrantFiled: April 10, 1992Date of Patent: January 4, 1994Assignee: Shell Oil CompanyInventors: Linda R. Chamberlain, Philip A. DeFriend
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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: 5258468Abstract: Permanently antistatic polyacrylate resin articles, antistatic polyacrylate resin compositions, and process for making them are described. The antistatic articles and compositions are obtained by reacting pendant ester groups on the surface of polyacrylate resin articles or on the chains of the polyacrylate resin compositions with dialkanolamines. The dialkanolamines used are typically dialkanolamines with lower alkanol groups, i.e. groups containing 1 to 4 carbon atoms. A preferred polyacrylate resin composition is poly(methyl methacrylate). A preferred alkanolamine is diethanolamine.Type: GrantFiled: April 16, 1991Date of Patent: November 2, 1993Inventor: Raj Chakrabarti
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Patent number: 5239010Abstract: A thermoplastic polymer which possesses excellent mechanical properties at both room and elevated temperatures is obtained by reacting an acyl sulfate with a block copolymer composed of at least one conjugated diene block and one alkenyl arene block. The block copolymer is first selectively hydrogenated and thereafter modified by grafting sulfonic acid functional groups primarily in the alkenyl arene blocks. The mechanical properties may be varied and controlled by varying the degree of functionalization (amount of sulfonation), and the degree of neutralization of the sulfonic acid groups to metal sulfonate salts.Type: GrantFiled: January 10, 1992Date of Patent: August 24, 1993Assignee: Shell Oil CompanyInventors: Jaroslav G. Balas, William P. Gergen, Carl L. Willis, Lorelle A. Pottick, Richard Gelles, Robert A. Weiss
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Patent number: 5237017Abstract: Copolymerization is started by reacts in and acrylamide represented by the general formula ##STR1## wherein R.sub.1 represents a hydrogen atom or a methyl group and R.sub.2 represents a hydrogen atom, an alkyl group, an aryl group or an aralkyl group, with an amount of methyl methacrylate in pure methanol or methanol containing Water in an amount of not more than 30% by weight based on the total weight of methanol and water, and, an additional amount of the methyl methacrylate is added at periods during proceeding of the polymerization. The obtained copolymer is heated at 80.degree. to 150.degree. C. in the same solvent and in the presence of an alkaline catalyst, to an imidized acrylic resin containing glutarimide groups.The imidized acrylic resins obtained by the process of the present invention have excellent thermal stability, transparency and color shade, and contain little acid or acid anhydride.Type: GrantFiled: December 27, 1990Date of Patent: August 17, 1993Assignee: Kuraray Co., Ltd.Inventors: Kazuhiko Akiyama, Yoshihiro Itagaki, Yoshifumi Murata
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Patent number: 5237024Abstract: A process which comprises reacting maleic anhydride and a primary or secondary C.sub.1 -C.sub.18 alcohol to form a maleic half ester, and then polymerizing the half ester and monoalkenyl aromatic monomer in ester solvent in the presence of a catalyst to form a solution of monoalkenyl aromatic monomer-maleic half ester copolymer having a weight average molecular weight of at least 110,000 Daltons. After formation of the copolymer, the reaction solution is neutralized to form a mixture of an alkaline salt solution of the copolymer and solvent and then the solvent is removed from the mixture.Type: GrantFiled: June 11, 1992Date of Patent: August 17, 1993Assignee: Monsanto CompanyInventors: David E. Allberry, Kang I. Lee
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Patent number: 5231140Abstract: The invention relates to a process for the preparation of (meth)acrylate polymers with side-chain, non-linear optical chromophores and molecular weights of from 5000 to 5000000, which comprises reacting polymers of (meth)acryloyl chloride in solution with D-.omega.-hydroxyalkyl chromophores of the formula (I) or the alcoholates thereof ##STR1## where D is an electron donor,A is an electron acceptor,X is CH and/or N, and m is from 2 to 11.The polymers can be used in optical components.Type: GrantFiled: May 22, 1992Date of Patent: July 27, 1993Assignee: BASF AktiengesellschaftInventors: Heike Kilburg, Karl-Heinz Etzbach, Karin H. Beck, Peter Strohriegl, Harry Mueller, Oskar Nuyken
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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: 5218033Abstract: A salt of a fatty acid is provided as a plasticizer for functionalized block copolymers of vinyl aromatics and conjugated diolefins wherein the functionalization comprises salt functionality. When this functionalized block copolymer is plasticized with the salt of a fatty acid the resulting composition will have higher tensile strengths than the raw polymer at and below the melting point of the additive and will have improved processability.Type: GrantFiled: November 25, 1991Date of Patent: June 8, 1993Assignee: Shell Oil CompanyInventors: Lorelle A. Pottick, Carl L. Willis
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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: 5166277Abstract: Complete hydrogenation of residual unsaturation in low molecular weight polymers containing conjugated dienes is enhanced by removal of strong lithium bases by filtering or decanting the polymer solution prior to hydrogenation.Type: GrantFiled: October 31, 1991Date of Patent: November 24, 1992Assignee: Shell Oil CompanyInventors: Daniel E. Goodwin, Carl L. Willis
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Patent number: 5155174Abstract: A surface-modified fibrillated fiber composition is disclosed herein which comprises polyacrylonitrile homopolymer or copolymer and a surface of pendant N-haloamide groups. Also disclosed is a process for the production of said composition.Type: GrantFiled: July 13, 1990Date of Patent: October 13, 1992Assignee: American Cyanamid CompanyInventors: Laurence W. Chang, Larry S. Anderson, David A. Ley
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Patent number: 5149745Abstract: Acid-functional polymer is reacted with a transition metal compound at a temperature above a 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 coatings such as floor polishes are also disclosed.Type: GrantFiled: April 23, 1991Date of Patent: September 22, 1992Assignee: Rohm and Haas CompanyInventors: Joseph M. Owens, Richard T. Gray
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Patent number: 5120789Abstract: Hot melt adhesive compositions having longer pot lives and comprising adhesive thermoplastic compositions having high cohesion and low flowability based on copolymers A) composed of ethylenically unsaturated monomers containing chelating metal compounds B) and, if desired, other conventional additives C), these hot melt adhesive compositions additionally containing an alkylphenolic resin or an arylphenolic resin in amounts of up to 20% by weight, relative to copolymer A), as crosslinking regulator in order to extend the pot life and to improve their processibility like a thermoplastic, and processes for preparing hot melt adhesive compositions by mixing the starting components.Type: GrantFiled: January 15, 1991Date of Patent: June 9, 1992Assignee: Hoechst AGInventors: Heinz Schmelzer, Manfred Kuechler
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Patent number: 5112457Abstract: The present invention is directed to a process for synthesizing hydroxylated plasma-polymerized films, as well as the hydroxylated plasma-polymerized films produced by the process of the invention. In addition, the present invention is directed to the use of hydroxylated plasma-polymerized films produced by the process of the invention for enhancing the compatibility and/or implantability of biomedical implants and/or devices.Type: GrantFiled: July 23, 1990Date of Patent: May 12, 1992Assignee: Case Western Reserve UniversityInventor: Roger E. Marchant
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Patent number: 5100970Abstract: Dye-containing polymers wherein the dyes are organic in nature are incorporated into glasses produced by a sol-gel technique. The glasses may be inorganic or organic-modified metal oxide heteropolycondensates. The dye-containing polymers are covalently bonded to the glass through a linking group. The products of this invention can be used to make optically clear colored films which can be employed in the imaging, optical, solar heat energy and related arts.Type: GrantFiled: December 4, 1990Date of Patent: March 31, 1992Assignee: Eastman Kodak CompanyInventors: Michael R. Roberts, Bradley K. Coltrain, Sharon M. Melpolder
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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
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Patent number: 5084522Abstract: Novel styrene derivatives are disclosed of the formula: ##STR1## wherein R.sub.1 and R.sub.2 are the same or different and each represents a saturated aliphatic hydrocarbon group or an aromatic hydrocarbon group, and R.sub.3 is --OH, Cl, or a group of the formula --OR.sub.4 or ##STR2## wherein R.sub.4 represents a saturated aliphatic hydrocarbon group or an aromatic hydrocarbon group. The functionalized styrene monomers I as well as polymers and copolymers incorporating such monomer units are useful as initiators, or precursors thereof, for the polymerization of isobutylene under cationic conditions to give graft copolymers containing both styrenic and isobutylenic units. These copolymers have commercial applications such as rubbers, coatings, and lubricants.Type: GrantFiled: February 5, 1988Date of Patent: January 28, 1992Assignee: University of OttawaInventor: Jean M. J. Frechet
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Patent number: 5081194Abstract: A no-post-cure method of curing polyacrylates having dual cure sites is accomplished with a two-part curing system or a combined one-part curing system. The two-part curing system consists of one or more metallic acid salts and an ammonium and/or phosphonium quaternary salt. The one-part curing system consists of an ammonium or phosphonium quaternary acid salt. The polyacrylate rubber must have both a halogen and a carboxyl cure site. The method consists of blending the curative with the polyacrylate rubber and heating the resultant composition until the composition cures. Because the mixed composition is shelf stable, it is not necessary to immediately heat the composition to cure it. The method may optionally include the step of storing the mixed composition until it is desired to cure it.Type: GrantFiled: April 15, 1991Date of Patent: January 14, 1992Assignee: Zeon Chemicals U.S.A., Inc.Inventor: Fred R. Wolf
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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: 5073604Abstract: Disclosed are stabilizer compositions comprising specific mixed partial salts of a lower alkyl vinyl ether-maleic acid copolymer wherein said partial salts contain as the cationic salt function:(a) from about 10% to about 65% zinc or strontium cations; and(b) from about 10% to about 75% calcium cationsof the total initial carboxyl groups reacted. Also disclosed are denture stabilizing compositions comprising these mixed partial salts, as well as denture stabilizing compositions comprising a safe and adhesively effective amount of two or more denture adhesive components wherein one of said denture adhesive components is the mixed partial salt(s) of the present invention.Type: GrantFiled: March 5, 1990Date of Patent: December 17, 1991Assignee: Richardson-Vicks, Inc.Inventors: Kenneth T. Holeva, Michael C. Gounaris
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Patent number: 5068291Abstract: This invention is a method of providing a pressure sensitive adhesive having a rapid or fast curing rate along with other suitable adhesive properties and comprises forming the adhesive by reaction of an interpolymer of an alkyl acrylate, ethylenically unsaturated monomer containing one or more carboxylic acid groups and vinyl acetate, with the interpolymer being formed by the slow addition of a uniform mixture of the components and then being reacted with a chelated metal alkoxide.Type: GrantFiled: March 22, 1990Date of Patent: November 26, 1991Assignee: National Starch and Chemical Investment Holding CorporationInventors: George L. Gallaway, Paul B. Foreman
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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: 5008345Abstract: A no-post-cure method of curing polyacrylates having dual cure sites is accomplished with a two-part curing system or a combined one-part curing system. The two-part curing system consists of one of more metallic acid salts and an ammonium and/or phosphonium quaternary salt. The one-part curing system consists of an ammonium or phosphonium quaternary acid salt. The polyacrylate rubber must have both a halogen and a carboxyl cure site. The method consists of blending the curative with the polyacrylate rubber and heating the resultant composition until the composition cures. Because the mixed composition is shelf stable, it is not necessary to immediately heat the composition to cure it. The method may optionally include the step of storing the mixed composition until it is desired to cure it.Type: GrantFiled: May 18, 1990Date of Patent: April 16, 1991Assignee: Zeon Chemical USA, Inc.Inventor: Fred R. Wolf
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Patent number: 5003010Abstract: Block polymers of vinylaromatics and conjugated dienes which posses acidic terminal groups and are in the form of salts which contain divalent or polyvalent metal cations or cation complexes. A process for the preparation of such salts of block polymers containing acid groups, and the use of these polymers as thermoplastic materials, as thermoplastic elastomers, for modifying thermoplastic materials, as viscosity index improvers in lubricating oils or as components in hot melt adhesives.Type: GrantFiled: October 12, 1989Date of Patent: March 26, 1991Assignee: BASF AktiengesellschaftInventors: Klaus Bronstert, Wolfgang F. Mueller
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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: 5003012Abstract: The present invention concerns an improved process for producing an ionomer from an acid group containing polymer. Production of the ionomer requires neutralization of an acid functionality or reaction of anhydride functional groups with a metal ion source to produce a salt. It has been found that metal hydrocarbyls or metal hydrides can be used as the source of metal ions for neutralizing the acid or anhydride functionalities. The reaction can occur in a solvent or in a melt, but is most preferably performed in a solvent.Type: GrantFiled: June 18, 1990Date of Patent: March 26, 1991Assignee: Shell Oil CompanyInventors: Linda R. Chamberlain, Carl L. Willis
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Patent number: 4987186Abstract: This invention provides a pressure sensitive adhesive composition comprising an acrylic copolymer component (A) which is at least in part an acetoacetyl group-containing acrylic copolymer and at least one curing component (B) selected from the class consisting of isocyanate compounds, epoxy compounds, aldehyde compounds, non-amino resin amine compounds, metal salts, metal alkoxides, metal chelate compounds, ammonium salts and hydrazine compounds.This adhesive composition is well-balanced in the triad of tack, adhesion, cohesion in adhesion technology and can be advantageously used in various applications such as adhesive tapes and labels.Type: GrantFiled: December 21, 1988Date of Patent: January 22, 1991Assignee: Nippon Gohsei Kagaku Kogyo Kabushiki KaishaInventors: Mamoru Akiyama, Takeshi Matsuyama, Yoshiyuki Yanagida, Akira Yamashita
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Patent number: 4985514Abstract: The present invention is a method for the production of a water absorbent resin, which comprises preparing a monomer component possessing an ability to form a cross-linked structure and convert itself into a hydrated gel polymer during the course of aqueous solution polymerization, possessing an acid group-containing monomer content of at least 50 mol %, and having 10 to 50 mol % of said acid group-containing monomer neutralized and subjecting said monomer component to aqueous solution polymerization within a reaction vessel having a plurality of rotary shafts each fitted with stirring blades.Type: GrantFiled: August 9, 1988Date of Patent: January 15, 1991Assignee: Nippon Shokubai Kagaku Kogyo Co., Ltd.Inventors: Kazumasa Kimura, Takumi Hatsuda, Yoshio Irie, Tadao Shimomura
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Patent number: 4959419Abstract: Polycarboxylic acids and their salts corresponding to the following general formula[X]--(NHOC--Y--COO M).sub.n (I)in whichX is the residue of a hydrophobic, linear or branched vinyl oligomer having an average molecular weight M.sub.n of from 200 to 5000 and preferably from 300 to 3000,Y is the 1,2-vinylene, 1,2-ethylene, 1,3-propylene, 1,2-phenylene, 1,2-cyclohexen-4-ylene or 1,2-cyclohexylene group,n is a number of from 1.4 to 3.0 and preferably from 1.6 to 2.3 andM is hydrogen, an alkali metal, an ammonium, C.sub.1 -C.sub.4 alkylammonium or C.sub.2 -C.sub.3 hydroxyalkylammonium group, which are useful as surfactants and emulsifiers in aqueous systems.Type: GrantFiled: December 16, 1987Date of Patent: September 25, 1990Assignee: Bayer AktiengesellschaftInventors: Adolf Schmidt, Udo W. Hendricks, Bruno Bomer, Karl H. Ott, Herbert Eichenauer, Alfred Pischtschan
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Patent number: 4952634Abstract: Curable carboxylated compositions are disclosed containing as a crosslinking agent a linear polymeric hindered polyvalent salt of an aromatic polycarboxylic acid. The salt is heat stable at crosslinking temperatures of the curable composition. Polyvalent metals include calcium, magnesium, cadmium, zinc, lead, cobalt, strontium, barium, nickel, copper, tin, aluminum, cerium, indium, iron, and chromium ions. Aromatic polycarboxylic acids of the salt include terephthalic, trimellitic, pyromellitic and trimesic.Type: GrantFiled: August 12, 1988Date of Patent: August 28, 1990Assignee: Synthetic Products CompanyInventor: Richard F. Grossman
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Patent number: 4950721Abstract: A method for preparing functionalized polymers formed by anionic polymerization, e.g., polystyrene, polyisoprene, etc., generally comprising the steps of conducting anionic polymerization, contacting the polymer so formed with CO.sub.2 in the presence of a polar diluent, then conducting an ion-exchange reaction between the carbonated polymer product and a hydrocarbon soluble salt.Type: GrantFiled: October 3, 1989Date of Patent: August 21, 1990Assignee: Exxon Chemical Patents Inc.Inventors: Anthony J. Dias, Joseph A. Olkusz
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Patent number: 4943618Abstract: A method is disclosed for preparing polyacrylonitrile copolymers by Heterogeneous reaction of polyacrylonitrile aquagel. Generally, the method includes the steps of preparing a solution of polyacrylonitrile by dissolving the polyacrylonitrile in a water-miscible solvent which is capable of dissolving the polyacrylonitrile but incapable of hydrolyzing the nitrile groups of the polyacrylonitrile under the dissolution conditions. Coagulating the polyacrylonitrile solution by replacing the solvent with a coagulating fluid such as water or a water-miscible fluid incapable of dissolving polyacrylonitrile at temperatures below 80.degree. C. and incapable of reacting with the nitrile groups of the polyacrylonitrile, thus obtaining the polymer in the aquagel state. Replacing the coagulating fluid with a fluid reagent capable of reacting with the nitrile groups of the polyacrylonitrile aquagel but incapable of dissolving the polyacrylonitrile aquagel at the selected reaction temperature.Type: GrantFiled: December 18, 1987Date of Patent: July 24, 1990Assignee: Kingston Technologies Limited PartnershipInventors: Vladimir A. Stoy, George P. Stoy, Jan Lovy
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Patent number: 4929690Abstract: Metal salts of carboxyl-containing polymers are prepared by suspending carboxyl and/or carboxylic anhydride group-containing polymers in an inert solvent, reacting with a pulverulent basic metal compound, and then working up the suspension.Type: GrantFiled: October 28, 1988Date of Patent: May 29, 1990Assignee: BASF AktiengesellschaftInventors: Hans-Helmut Goertz, Walter Denzinger, Hans-Juergen Raubenheimer
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Patent number: 4912170Abstract: This invention relates to a p-methyl styrene polymer represented by the following formula: ##STR1## Z denotes a group such as a functional group. Poly p-methylstyrene (PPMS) is lithiated by reaction with n-butyllithium. The lithiated PPMS is used to prepare polymers containing functional groups. As an example, a solution of PPMS (MW 260,000), 1.0 g in 20 ml of cyclohexane, was reacted with n-butyllithium, 8.5 mmol, and tetramethylethylenediamine, 8.7 mmol, for 20 hours to obtain a precipitate. The precipitate was dissolved in THF, and CO.sub.2 was blown into the solution. The solution was washed with an aqueous solution of HCl and dropped into methanol to obtain a solid polymer having carboxyl group functionality.Type: GrantFiled: December 22, 1988Date of Patent: March 27, 1990Assignee: Toa Nenryo Kogyo K.K.Inventors: Tadashi Niwa, Masayuki Kato, Yoshio Taguchi, Chihiro Imai, Tokuo Makishima, deceased, by Nobuko Makishima, legal representative
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Patent number: 4906705Abstract: A method of treating a hydrocarbon containing a tertiary chloroalkyl groups to convert it to an allylic lithium by dehydrochlorinating the above either simultaneously or sequentially, to first dehydrochlorinate the compound to form a terminal unsaturation and then converting it to an allylic lithium derivative. Alkyl lithium is used to generate the allylic lithium derivative alone or with a complexing agent. The complexing agents are ethers, such as tetrahydrofuran, diamines with diethyldiamino ethane being a preferred one, and t-buOK. The solvents used are tetrahydrofuran, the cycloalkanes such a cyclohexane and the alkanes such as hexanes, pentanes and heptanes.Type: GrantFiled: April 4, 1988Date of Patent: March 6, 1990Assignee: The University of AkronInventors: Kuo L. Peng, Joseph P. Kennedy