From Reactant Having A Nitrogen Atom Directly Bonded To The Carbon Atom Of A Carbonyl Group, I.e., N-c(=o)- Patents (Class 528/367)
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Patent number: 5874521Abstract: A reactive, powdered polymeric material, the polymeric material comprising polymer particles (i) having an average particle size less than about 1000 .mu.m; (ii) which are made up of a plurality of smaller particles; and (iii) having energy stored therein. A process for producing the powdered polymeric material is described. The process comprises the steps of: (i) placing polymeric material in a milling chamber equipped with impact means; (ii) accelerating the impact means to at least about 50 ml/s.sup.2 ; (iii) impacting the polymeric material with the impact means; (iv) repeatedly welding and fracturing the polymeric material; and (v) repeating Steps (ii), (iii) and (iv) until a powdered polymeric material is produced having an average particle size less than about 1000 .mu.m. During Steps (iii) and (iv), the temperature of the milling chamber is maintained below the glass transition temperature of the polymeric material.Type: GrantFiled: November 21, 1994Date of Patent: February 23, 1999Assignee: University Technologies International Inc.Inventor: William J.D. Shaw
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Patent number: 5854378Abstract: This invention an aspartic acid copolymer obtained by copolymerizing a monomer mixture comprising (1) aspartic acid, maleamic acid and/or a reaction product of maleic acid and ammonia as a main monomer, (2) fumaric acid, and (3) succinic acid and containing 0.005 to 3% by weight, based on the total monomers, of ammonia in the form of an ammonium salt and hydrolyzing the resulting copolymer partially or completely; and a process for producing the same.Type: GrantFiled: December 12, 1996Date of Patent: December 29, 1998Assignee: Mitsubishi Chemical CorporationInventors: Masayuki Tomida, Masako Yoshikawa, Takeshi Nakato
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Patent number: 5852160Abstract: This invention relates to methods for preparing novel, solid-phase transfer reagents, specifically phosgenated oxime resins and non-symmetrical ureas, that are useful as supports in combinatorial synthesis for the creation of libraries of compounds for lead identification.Type: GrantFiled: August 19, 1997Date of Patent: December 22, 1998Assignee: E. I. du Pont de Nemours and CompanyInventor: Mark Andrew Scialdone
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Patent number: 5849861Abstract: New polyquinazoline polymers are provided by reacting novel monomers. The polymers incorporate repeat units that have at least one quinazoline nucleus and at least one ether linkage at the quinazoline 2 or 4 position. The quinazoline polymers are prepared by treating a monomer which comprises a quinazolone nucleus having one activated halide group with a base in a dipolar solvent to thereby form the polyquinazoline polymer.Type: GrantFiled: June 25, 1997Date of Patent: December 15, 1998Assignee: Hitachi Chemical Co., Ltd.Inventor: Virgil J. Lee
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Patent number: 5830948Abstract: Polyoxazolines having the structural formula: ##STR1## wherein R is phenylene or alkylene containing 2 to 18 carbon atoms, R.sup.2 is C.sub.1-4 alkyl and R.sub.1 is selected from the group consisting of C.sub.1-12 alkyl, vinyl, isopropylidene, pentafluoroethyl, phenyl, hydroxyphenyl which is optionally interrupted by up to 20 ethylene oxide groups, C.sub.1-2 -alkoxyphenyl which is optionally interrupted by up to 20 ethylene oxide groups and .paren open-st.CH.sub.2 CH.sub.2 --O.paren close-st..sub.r CH.sub.3 in which r ranges from 1-20, X is NH.sub.2 or OH, n ranges from 2 to 50 and m ranges from 0 to 50, wherein R.sub.1 is hydroxyphenyl optionally interrupted by up to 20 ethylene oxide groups only when X is NH.sub.2, are polymerizable to form hyperbranched polymers which have a number average molecular weight ranging from 5,000 to 150,000, a weight average molecular weight ranging from 5,500 to 5,000,000 and a polydispersity ranging from 1.Type: GrantFiled: February 28, 1997Date of Patent: November 3, 1998Assignee: Cornell Research Foundation, Inc.Inventors: Jean J.M. Frechet, Koji Yui
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Patent number: 5817736Abstract: Epoxy resin mixtures to produce prepregs and composites contain the following components:a phosphorus-modified epoxy resin with an epoxy value of 0.02 to 1 mol/100 g, made up of structural units derived from(a) polyepoxy compounds with at least two epoxy groups per molecule and(b) phosphinic acid anhydrides, phosphonic acid anhydrides or phosphonic acid half-esters;dicyandiamide and/or an aminobenzoic acid derivative as the hardener;an amino hardening accelerator.Type: GrantFiled: March 10, 1997Date of Patent: October 6, 1998Assignee: Siemens AktiengesellschaftInventors: Wolfgang von Gentzkow, Jurgen Huber
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Patent number: 5785963Abstract: The present invention relates to a class of novel polymeric hydantoin quaternary compounds, obtained either via a reaction of a hydantoin diamine and an organic dihalide or epichlorohydrin or via a reaction of hydantoin dichloride with an organic diamine. These polymeric hydantoin quaternary compounds have unexpected properties which make them very useful as low foaming biocidal, fungicidal and algicidal agents.Type: GrantFiled: March 27, 1996Date of Patent: July 28, 1998Assignee: Lonza, Inc.Inventor: Chuen-Ing J. Tseng
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Patent number: 5770684Abstract: A catalyst composition prepared by reacting together:(a) a source of a Group VIII metal,(b) a bidentate phosphine ligand having at least two phosphorous atoms joined by a bridging group of the formula --NR.sup.2 (CX)NR.sup.2 where X.dbd.O, S or Se, each R.sup.2 is the same or different and is a hydrogen or hydrocarbyl group, and(c) a promoteris disclosed. The catalyst composition is used for preparing polyketones.Type: GrantFiled: August 13, 1996Date of Patent: June 23, 1998Assignee: BP Chemicals LimitedInventors: Nevin John Stewart, Stephen John Dossett
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Patent number: 5770675Abstract: Disclosed herein are cyclic oligomers comprising substituted or unsubstituted m-phenylene isophthalamide, complexes of these oligomers with selected metal salts, novel methods for their preparation, and polymerization of the cyclic oligomers to linear aramids. The aramids are useful, for example, as fibers for fire resistant clothing. Amino-finctional cyclic oligomers may be reacted with polyfunctional acyl halides to produce polyamides.Type: GrantFiled: June 18, 1996Date of Patent: June 23, 1998Assignee: E. I. du Pont de Nemours and CompanyInventors: Young Hwan Kim, Wesley Memeger, Jr.
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Patent number: 5759690Abstract: Epoxy resin mixtures for the production of prepregs and composites contain the following components:a phosphorus-modified epoxy resin with an epoxy value of 0.02 to 1 mol/100 g, made up of structural units derived from(a) polyepoxy compounds with at least two epoxy groups per molecule, and(b) phosphinic acid anhydrides, phosphonic acid anhydrides, or phosphonic acid half-esters;an amine-substituted aromatic sulfonic acid amide or hydrazide as a hardener;an amino hardening accelerator.Type: GrantFiled: March 10, 1997Date of Patent: June 2, 1998Assignee: Siemens AktiengesellschaftInventors: Wolfgang von Gentzkow, Jurgen Huber, Heinrich Kapitza, Wolfgang Rogler
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Patent number: 5756646Abstract: An agent for improving surface quality of paper comrising an acrylamide resin composition obtained by hydrolyzing an acrylamide resin which is obtained by polymerizing an acrylamide monomer in the presence of a urea compound, or copolymerizing an acrylamide monomer and an acrylonitrile monomer; an acrylamide monomer and a cross-linking agent; or an acrylamide monomer, an acrylnitrile monomer and a cross-linking agent in the presence of a urea compound. This agent provides paper with excellent surface strength, tensile strength and internal strength far better than conventional paper quality improving agents.Type: GrantFiled: March 15, 1996Date of Patent: May 26, 1998Assignee: Japan PMC CorporationInventors: Kenji Nasu, Hiroharu Kawano, Satoshi Takizawa, Kiyoshi Iwai
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Patent number: 5750637Abstract: This invention provides a process for the preparation of a polycarbodiimide solution wherein the polycarbodiimide is synthesized by heating an organic diisocyanate (e.g., 2,4-tolylene diisocyanate or 2,6-tolylene diisocyanate) in the presence of a carbodiimidation catlayst characterized in that a non-chlorinated aromatic hydrocarbon is used as the solvent and the resulting polycarbodiimide has a number average molecular weight from about 3,000 to about 10,000; wherein the synthesis is performed in the temperature range of from about 100.degree. to about 120.degree. C.Type: GrantFiled: June 4, 1996Date of Patent: May 12, 1998Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Yasuyuki Takiguchi, Ken Yahata, Yasuyoshi Komoto, Akira Hayashida, Minoru Takamizawa
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Patent number: 5734003Abstract: A charge transporting polymer represented by formula ##STR1## wherein R represents a hydrogen atom, an alkyl group, an acyl group or --CONH--R, wherein R' represents an alkyl group or a substituted or unsubstituted aryl group; R.sub.1 and R.sub.2, which may be the same or different, each represent a hydrogen atom, an alkyl group, an alkoxy group, a substituted amino group, a halogen atom, or a substituted or unsubstituted aryl group; X represents a substituted or unsubstituted divalent aromatic group; y represents 0 or 1; m represents 0 or 1; n represents an integer of 1 to 5; and p represents an integer of 5 to 5000,a process for producing the same, and an organic electron device containing the same, such as an electrophotographic photoreceptor are disclosed. The charge transporting polymer is excellent in solubility, film-forming properties, mechanical strength, positive hole mobility, and stability to repeated use.Type: GrantFiled: December 11, 1996Date of Patent: March 31, 1998Assignee: Fuji Xerox Co., Ltd.Inventors: Masahiro Iwasaki, Akira Imai, Katsumi Nukada, Katsuhiro Sato
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Patent number: 5726281Abstract: An epoxy-terminated polyamide having the following structure: ##STR1## where each of R.sub.1, R.sub.2, and R.sub.3 is a divalent organic group, and each of n and m is a natural number, and an adhesive containing the above epoxy-terminated polyamide, an epoxy resin and a curing agent. The epoxy-terminate polyamide is well compatible with epoxy resins and an adhesive containing the same is excellent in adhesiveness and thermal resistance.Type: GrantFiled: September 29, 1994Date of Patent: March 10, 1998Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Hitoshi Nojiri, Katsunori Yabuta
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Patent number: 5719257Abstract: The invention relates to polyethers of the formula I ##STR1## in which m is 0 or 1; n is an integer in the range from 3 to 100; R.sup.1, in the case where m is 0 or 1, is C.sub.1 -C.sub.36 alkyl or C.sub.7 -C.sub.36 aralkyl, each of which is unsubstituted or substituted by C.sub.5 -C.sub.8 cycloalkyl, is interrupted in the aliphatic part by C.sub.5 -C.sub.8 cycloalkylene or by oxygen or sulfur or --NR.sup.11 -- or is substituted in the aromatic part by 1 to 3 C.sub.1 -C.sub.4 alkyl and/or C.sub.1 -C.sub.4 alkoxy radicals; C.sub.3 -C.sub.36 alkenyl; C.sub.5 -C.sub.12 cycloalkyl which is unsubstituted or substituted by 1 to 4 C.sub.1 -C.sub.4 alkyl and/or C.sub.1 -C.sub.4 alkoxy radicals; C.sub.6 -C.sub.10 aryl which is unsubstituted or substituted by 1 to 4 C.sub.1 -C.sub.4 alkyl and/or C.sub.1 -C.sub.4 alkoxy radicals; and R.sup.1, in the case where m is 0, can alternatively be hydrogen; C.sub.1 -C.sub.36 alkoxy or C.sub.7 -C.sub.36 aralkoxy, each of which is unsubstituted or substituted by C.sub.5 -C.sub.Type: GrantFiled: October 2, 1996Date of Patent: February 17, 1998Assignee: Ciba Specialty Chemicals CorporationInventor: Alfred Steinmann
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Patent number: 5705605Abstract: There is described a process for the preparation of basic poIycondensates, which comprises(a) reacting an amine of formula ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are each independently of one another hydrogen or alkyl which is unsubstituted or substituted by amino, hydroxy, cyano or C.sub.1 -C.sub.4 alkoxy, and A is alkylene which may be substituted or interrupted by one or more than one hetero atom, with an ammonium salt in the presence of an anhydrous solvent, and(b) reacting the protonised product obtained according to (a) with a cyanamide at elevated temperature.The polycondensates or salts thereof prepared according to this process are particularly suitable aftertreatment agents for enhancing the wetfastness properties of dyed or printed textile material.Type: GrantFiled: July 6, 1995Date of Patent: January 6, 1998Assignee: Ciba Specialty Chemicals CorporationInventors: Rolf Tittmann, Ruth Roth
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Patent number: 5686560Abstract: New polyquinazoline polymers are provided by reacting novel monomers, The polymers incorporate repeat units that have at least one quinazoline nucleus and at least one ether linkage at the quniazoline 2 or 4 position. The quinazoline polymers are prepared by treating a monomer which comprises a quinazolone nucleus having one activated halide group with a base in a dipolar solvent to thereby form the polyquinazoline polymer.Type: GrantFiled: June 6, 1995Date of Patent: November 11, 1997Assignee: Hitachi Chemical Co., Ltd.Inventor: Virgil J. Lee
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Patent number: 5663287Abstract: The present invention provide a novel polyimide which is soluble in organic solvents and excels in heat resistance, and to a process for producing the polyimide. The polyimide of the present invention comprises a repeating unit represented by the formula (1) and having a number average molecular weight of from 4,000 to 200,000. ##STR1## wherein X is --SO.sub.2 -- or --C(.dbd.O)--OCH.sub.2 CH.sub.2 O--C(.dbd.O)--, and R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are independently an alkyl group having 1 to 4 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.Type: GrantFiled: March 1, 1996Date of Patent: September 2, 1997Assignee: Tomoegawa Paper Co., Ltd.Inventors: Osamu Oka, Takeshi Hashimoto, Takeshi Nishigaya, Tatsuya Hariko
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Patent number: 5659008Abstract: Copolymers of polyaspartic acid which are suitable for the Inhibition of scale deposition were obtained by reacting maleic acid, an additional polycarboxylic acid and ammonia in a stoichiometric excess, at 120.degree.-350.degree. C., preferably 180.degree.-300.degree. C., to provide copolymers of polysuccinimide. In a second embodiment, a polyamine was added to the reaction mix. These intermediate polysuccinimide copolymers could then be converted to the salts of copolymers of polyaspartic acid by hydrolysis with a hydroxide.Such copolymers are useful in preventing deposition of scale from water and find applications in treating water. Other applications include scale prevention additives for detergents. In addition, such copolymers inhibit dental tartar and plaque formation.Type: GrantFiled: April 13, 1995Date of Patent: August 19, 1997Assignee: Bayer AGInventors: Louis L. Wood, Gary J. Calton
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Patent number: 5648171Abstract: Epoxy resin mixtures for producing prepregs and composites that are available at low cost and can be processed well yield flame-retardant molding materials even without the addition of flame retardants, and these molding materials have a high glass transition temperature and also have an improved interlaminar adhesion and adhesion to copper when they contain the following components:a phosphorus-modified epoxy resin with an epoxy value of 0.02 to 1 mol/100 g, composed of structural units derived from(A) polyepoxy compounds with at least two epoxy groups per molecule and(B) at least one compound from the group consisting of phosphinic acids, phosphonic acids, pyrophosphonic acids and phosphonic acid half-esters, andan aromatic polyamine as the hardener.Type: GrantFiled: September 14, 1995Date of Patent: July 15, 1997Assignee: Siemens AktiengesellschaftInventors: Wolfgang von Gentzkow, Jurgen Huber, Heinrich Kapitza, Wolfgang Rogler, Hans-Jerg Kleiner
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Patent number: 5635571Abstract: Polyoxazolines having the structural formula: ##STR1## wherein R is phenylene or alkylene containing 2 to 18 carbon atoms, R.sup.2 is C.sub.1-4 alkyl and R.sub.1 is selected from the group consisting of C.sub.1-12 alkyl, vinyl, isopropylidene, pentafluoroethyl, phenyl, hydroxyphenyl which is optionally interrupted by up to 20 ethylene oxide groups, C.sub.1-2 -alkoxyphenyl which is optionally interrupted by up to 20 ethylene oxide groups and .paren open-st.CH.sub.2 CH.sub.2 --O.paren close-st..sub.r CH.sub.3 in which r ranges from 1-20, X is NH.sub.2 or OH, n ranges from 2 to 50 and m ranges from 0 to 50, wherein R.sub.1 is hydroxyphenyl optionally interrupted by up to 20 ethylene oxide groups only when X is NH.sub.2, are polymerizable to form hyperbranched polymers which have a number average molecular weight ranging from 5,000 to 150,000, a weight average molecular weight ranging from 5,500 to 5,000,000 and a polydispersity ranging from 1.Type: GrantFiled: June 5, 1996Date of Patent: June 3, 1997Assignee: Cornell Research Foundation, Inc.Inventors: Jean M. J. Frechet, Koji Yui
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Patent number: 5635586Abstract: Polymers of maleic acid may be prepared by thermally polymerizing malic acid, maleic acid or fumaric acid with less than one equivalent of ammonia. The polymers are modified by the incorporation of amines, carboxylic acids or combinations thereof. The polymers formed are excellent inhibitors of alkaline earth salt deposition, dispersants, tartar control additives, detergent additives, and water treatment agents.Type: GrantFiled: May 22, 1995Date of Patent: June 3, 1997Assignee: Calwood Chemical Industries, Inc.Inventors: Louis L. Wood, Gary J. Calton
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Patent number: 5623023Abstract: Disclosed is a curable composition comprising (A) an imidazole derivative represented by the following general formula (1), which is capable of generating free imidazole by exposure to light, and (B) a polyfunctional epoxy compound: ##STR1## wherein R represents a hydrogen atom, a halogen atom, an alkyl group, an aryl group, an aralkyl group, a nitro group, a cyano group, an alkoxyl group, a phenoxy group, or an aromatic ring residue capable of forming a condensed ring in combination with a benzene ring. The composition may further incorporate therein at least one compound selected from the group consisting of polyfunctional phenol compounds, polyfunctional carboxylic acids, acid anhydrides, and amine compounds.Type: GrantFiled: May 21, 1996Date of Patent: April 22, 1997Assignee: Taiyo Ink Manufacuturing Co., Ltd.Inventor: Tadatomi Nishikubo
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Patent number: 5594142Abstract: The invention relates to a process for the preparation of polyalkyl-1-oxa-diazaspirodecane compounds, which can be used as highly active light stabilizers for polymers. The reaction is carried out in a solvent mixture of at least one alcohol and if appropriate an inert organic solvent in the presence of solid alkali metal hydroxide or a corresponding amount of a mixture of solid alkali metal hydroxide and water as the sole catalyst. The process offers the advantage that, by using a solvent mixture and dispensing with a phase transfer catalyst, a higher rate of reaction and therefore higher product quality with the same yield are achieved. By dispensing with a phase transfer catalyst, which remains in the waste water and must be disposed of expensively, and by the reusability of the solvent mixture, the process is more environment-friendly and more economical than processes known to date.Type: GrantFiled: February 16, 1995Date of Patent: January 14, 1997Assignee: Hoechst AktiengesellschaftInventors: Karl Gaa, G unter Nowy, Georg Schmailzl
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Patent number: 5587451Abstract: A process for preparing polyazamacrocyclic compounds using a nucleophilic imidazoline with(A) an ethylene oxide or an ethylene carbonate, in an aprotic solvent, followed by intramolecular amination, and then either basic or acidic hydrolysis; or(B) an electrophilic substrate, in a polar solvent, optionally in the presence of a non-nucleophilic base, to form an intermediate, followed by basic hydrolysis; or(C) a electrophilic substrate, in a polar solvent, optionally in the presence of a non-nucleophilic base, followed by prolonged heating in a polar solvent or by treatment with a peroxide solution, followed by basic hydrolysis to form a urea, then basic hydrolysis under pressure; andseparating the desired polyazamacrocycle. The compounds so prepared are useful in pharmaceutical applications.Type: GrantFiled: October 7, 1994Date of Patent: December 24, 1996Assignee: The Dow Chemical CompanyInventors: Phillip S. Athey, Garry E. Kiefer
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Patent number: 5587243Abstract: Epoxy resin mixtures for producing prepregs and composites that are available at low cost and can be processed well yield flame-retardant molding materials even without the addition of flame retardants, and these molding materials have a high glass transition temperature and also have an improved interlaminar adhesion and adhesion to copper when they contain the following components:a phosphorus-modified epoxy resin with an epoxy value of 0.02 to 1 mol/100 g, composed of structural units derived from(A) polyepoxy compounds with at least two epoxy groups per molecule and(B) phosphinic acid anhydrides and/or phosphonic acid anhydrides, andan aromatic polyamine as the hardener.Type: GrantFiled: September 14, 1995Date of Patent: December 24, 1996Assignees: Siemens Aktiengesellschaft, Hoechst AktiengesellschaftInventors: Wolfgang von Gentzkow, J urgen Huber, Heinrich Kapitza, Wolfgang Rogler, Hans-Jerg Kleiner, Dieter Wilhelm
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Patent number: 5554711Abstract: The invention relates to reaction products prepared from(a) organic polyisocyanates,(b) 0.005 to 0.9 equivalents of a C.sub.6-24 alcohol per equivalent of NCO or latent NCO present in component (a),(c) 0.1 to 0.995 mol of cyanamide per equivalent of NCO or latent NCO present in component (a), and(d) ammonia or a volatile amine as neutralizing agent for the cyanamide groups of component (c),with the proviso that the reaction products are free from polyester and polyether groups and from halogen atoms.Type: GrantFiled: September 6, 1994Date of Patent: September 10, 1996Assignee: Bayer AktiengesellschaftInventors: Harro Tr aubel, Thomas M unzmay, Tillmann Hassel, Wilhelm Kr ummel, Hans-Albert Ehlert, Joachim Kochta
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Patent number: 5552518Abstract: Polymers of maleic acid may be prepared by thermally polymerizing malic acid, maleic acid or fumaric acid with less than one equivalent of ammonia. The polymers are modified by the incorporation of amines, carboxylic acids or combinations thereof. The polymers formed are excellent inhibitors of alkaline earth salt deposition, dispersants, tartar control additives, detergent additives, and water treatment agents.Type: GrantFiled: May 22, 1995Date of Patent: September 3, 1996Assignee: Calwood Chemical Industries, Inc.Inventors: Louis L. Wood, Gary J. Calton
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Patent number: 5543490Abstract: Polyaspartic acid is prepared by reacting maleic anhydride and ammonia to give maleamic acid, polymerizing the maleamic acid and subsequently hydrolyzing the product to give polyaspartic acid or a salt thereof.Type: GrantFiled: December 17, 1993Date of Patent: August 6, 1996Assignee: Bayer AGInventors: Torsten Groth, Winfried Joentgen, Hans W. Linden, Nikolaus Muller, Heinz-Joachim Rother, Paul Wagner, Martin Kugler
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Patent number: 5530091Abstract: Molten maleic anhydride is introduced in the form of fine droplets at 53.degree. C. to 250.degree. C. and preferably at 60.degree. C. to 120.degree. C. into a gas atmosphere which consists either of pure gaseous ammonia or of a gas mixture of ammonia and at least one other gas and of which the temperature is between 20.degree. C. and 500.degree. C. The process is carried out at a temperature of 120.degree. C. to 180.degree. C. for the production of polysuccinimide and at a temperature of 10.degree. C. to 120.degree. C. for the production of maleic amide acid.Type: GrantFiled: February 21, 1995Date of Patent: June 25, 1996Assignee: Bayer AktiengesellschaftInventors: Paul Wagner, Dietrich Gehrmann, Thomas Bamberger, Manfred Giltjes, Winfried Joentgen, Torsten Groth
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Patent number: 5527878Abstract: Polymers of maleic, fumaric or malic acids or maleic, fumaric or malic acid and ammonia with amino acids are prepared by heating at 180.degree.-350.degree. C., preferably 200.degree.-300.degree. C. The polymer formed may be converted to a salt by hydrolysis with a metal hydroxide or ammonium hydroxide.Type: GrantFiled: May 19, 1995Date of Patent: June 18, 1996Assignee: Calwood Chemical Industries, Inc.Inventors: Louis L. Wood, Gary J. Calton
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Patent number: 5521279Abstract: Polymers of maleic acid may be prepared by thermally polymerizing malic acid, maleic acid or fumaric acid with less than one equivalent of ammonia. The polymers are modified by the incorporation of amines, carboxylic acids or combinations thereof. The polymers formed are excellent inhibitors of alkaline earth salt deposition, dispersants, tartar control additives, detergent additives, and water treatment agents.Type: GrantFiled: May 22, 1995Date of Patent: May 28, 1996Assignee: Calwood Chemical Industries, Inc.Inventors: Louis L. Wood, Gary J. Calton
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Patent number: 5521013Abstract: Partially fluorinated polymer comprising a backbone and side-chains, in which the backbone and side-chains are each 4 atoms long and are chemically incompatible, one chain being at least predominantly hydrocarbon and the other comprising a C.sub.4+ perfluorocarbon moiety.Type: GrantFiled: May 16, 1995Date of Patent: May 28, 1996Assignee: Minnesota Mining and Manufacturing CompanyInventors: Anselm C. Griffin, Ladislav M. Wilson
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Patent number: 5519110Abstract: Polymers of maleic acid may be prepared by thermally polymerizing malic acid, maleic acid or fumaric acid with less than one equivalent of ammonia. The polymers are modified by the incorporation of amines, carboxylic acids or combinations thereof. The polymers formed are excellent inhibitors of alkaline earth salt deposition, dispersants, tartar control additives, detergent additives, and water treatment agents.Type: GrantFiled: May 22, 1995Date of Patent: May 21, 1996Assignee: Calwood Chemical Industries, Inc.Inventors: Louis L. Wood, Gary J. Calton
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Patent number: 5517993Abstract: Novel compounds having use as contrast agents in magnetic resonance imaging, as well as other uses, are described. The compounds are comprised of a copolymer which comprises at least two of a first monomer of the formula X.sub.1 -(CHR.sub.2 CHR.sub.2 --Y).sub.n --(CHR.sub.2).sub.m --CHR.sub.2 CHR.sub.2 --X.sub.2, wherein X.sub.1 and X.sub.2 are, independently, OH, NH.sub.2, NHR.sub.1, COOH, COOR.sub.1, SH, or Z, Y is O, NH, NR.sub.1, S, or CO, n is 0-10,000, m is 0 or 1, each Z is, independently, Cl, Br, or I, each R.sub.1 is, independently, a C.sub.1 -C.sub.20 substituted alkyl or cycloalkyl, and each R.sub.2 is, independently, H or OH, and at least one of a second monomer which is a polynitrilo chelating agent having at least two COOH, COOR.sub.1, or COZ groups, the first and second monomers being bound to one another to form a copolymer through an ester, amide, or carboxylic thioester linkage of at least one of the OH, NH.sub.2, NHR.sub.1, COOH, COOR.sub.Type: GrantFiled: June 7, 1995Date of Patent: May 21, 1996Assignee: ImaRx Pharmaceutical Corp.Inventors: Evan C. Unger, Guanli Wu
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Patent number: 5508380Abstract: Fluorinated polymers having thermoplastic elastomeric properties comprising in the macromolecule perfluoropolyoxyalkylene sequences of formula:--CF.sub.2 O--(CF.sub.2 CF.sub.2 O).sub.m --(CF.sub.2 O).sub.n --CF.sub.2 --(I)where m/n=0.2+5, are obtained through polycondensation with suitable perfluoropolyoxyalkylene condensation monomers corresponding to formula (I), functionalized with suitable reactive groups and having a functionality at least equal to 1.97, preferably at least equal to 1.99.Such polymers are characterized by an average molecular weight at least 50%, preferably at least 100%, higher than that of the corresponding polymers obtained starting from perfluoropolyoxyalkylenes corresponding to formula (I) having a functionality not higher than 1.96.Type: GrantFiled: August 21, 1995Date of Patent: April 16, 1996Assignee: Ausimont, S.p.A.Inventors: Stefano Turri, Giuseppe Gianotti, Marinella Levi, Claudio Tonelli
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Patent number: 5508379Abstract: Polyester polymers having pendant carbamate groups are disclosed. The polymers are prepared by reacting:(a) reacting a hydroxyalkyl cyclic carbonate compound with a compound having at least one cyclic anhydride group to form a half-ester acid comprising a cyclic carbonate group,(b) reacting the cyclic carbonate group on the half-ester from step (a) with ammonia, ammonium hydroxide, or a primary amine to ring open the cyclic carbonate and form a compound comprising an acid group, a hydroxyl group, and a pendant carbamate group, and(c) reacting a mixture comprising the compound from step (b) and optionally comprising a polyol or a polyacid or both to form the polyester having pendant carbamate groups.Type: GrantFiled: December 21, 1994Date of Patent: April 16, 1996Assignee: BASF CorporationInventors: Gregory L. Menovcik, Walter H. Ohrbom
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Patent number: 5498784Abstract: Alcohol-soluble aromatic heterocyclic copolymers having repeating units of the formula: ##STR1## wherein x has a value of 0.05 to 0.50 and y has a value of 1.0-x. These copolymers are useful in the preparation of organic/inorganic hybrid materials having transparency which comprise the sol-gel derived, hydrolytically condensed reaction product of a metal alkoxide of the formula M(OR).sub.w wherein R is a lower alkyl group, M is Si, Ti, Al or a mixture thereof, and w is the valence value of M, and the above copolymer.Type: GrantFiled: February 21, 1995Date of Patent: March 12, 1996Assignee: The United States of America as represented by the Secretary of the Air ForceInventors: Fred E. Arnold, Jom P. Chen
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Patent number: 5496914Abstract: Polymers of maleic, fumaric or malic acids or maleic, fumaric or malic acid and ammonia with amino acids are prepared by heating at 180.degree.-350.degree. C., preferably 200.degree.-300.degree. C. The polymer formed may be converted to a salt by hydrolysis with a metal hydroxide or ammonium hydroxide.Type: GrantFiled: January 18, 1995Date of Patent: March 5, 1996Assignee: SRCHEM, Inc.Inventors: Louis L. Wood, Gary J. Calton
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Patent number: 5494922Abstract: The invention concerns allophanic acid derivatives of formula IR.sup.1 --N(R.sup.2)CO--N(R.sup.3)CO--X.sup.1 --Q--X.sup.2 --GIand pharmaceutically acceptable metabolically labile esters or amides thereof, and pharmaceutically acceptable salts thereof, in which R.sup.1, R.sup.2, R.sup.3, X.sup.1, Q X.sup.2 and G have the meanings given in the specification. The invention also concerns processes for the preparation of the allophanic acid derivatives of formula I, pharmaceutical compositions containing them and their use as inhibitors of the binding of fibrinogen to glycoprotein IIb/IIIa.Type: GrantFiled: June 5, 1995Date of Patent: February 27, 1996Assignee: Zeneca LimitedInventors: George R. Brown, Richard E. Shute
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Patent number: 5492996Abstract: Alcohol-soluble aromatic heterocyclic polymers having repeating units of the formula: ##STR1## wherein X is --O-- or --S--, and R is selected from the group consisting of: ##STR2## and R' is selected from the group consisting of alkyl having 1 to 5 carbon atoms, alkaryl having 7 to 12 carbon atoms, aralkyl having 7 to 12 carbon atoms and substituted aromatic having 1 to 3 substituent groups.The alcohol-soluble polymers may be used for fabricating organic/inorganic hybrid composites with metal alkoxides M(OQ).sub.v, wherein M is Si, Ti, Al or the like and Q is a lower alkyl group. These polymers can also be used to coat materials or substrates which are susceptible to attack by highly corrosive acids. On drying, the ionic bond between the trialkylamine and the sulfo group is broken and the polymer reverts to the parent structure, thereby leaving a polymer coating. Yet further, the original amine can be exchanged with a less volatile amine or an amine having a desired functionality.Type: GrantFiled: February 21, 1995Date of Patent: February 20, 1996Assignee: The United States of America as represented by the Secretary of the Air ForceInventors: Thuy D. Dang, Jom P. Chen, Fred E. Arnold
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Patent number: 5493005Abstract: Alcohol-soluble, aromatic heterocyclic copolymers having repeating units of the formula: ##STR1## wherein x has a value of 0.10 to 0.90 and y has a value of 1.0-x. These copolymers are useful in the preparation of organic/inorganic hybrid materials having transparency which comprise the sol-gel derived, hydrolytically condensed reaction product of a metal alkoxide of the formula M(OR).sub.w wherein R is a lower alkyl group, M is Si, Ti, Al or a mixture thereof, and w is the valence value of M, and the above copolymer.Type: GrantFiled: February 21, 1995Date of Patent: February 20, 1996Assignee: The United States of America as represented by the Secretary of the Air ForceInventors: Fred E. Arnold, Jom P. Chen
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Patent number: 5491213Abstract: Polysuccinimide is prepared by reacting an unsaturated C.sub.2 dicarboxylic acid or anhydride thereof, e.g., maleic acid, fumaric acid, and maleic anhydride, with a particulate ammonium salt that is thermally decomposable to liberate ammonia. The reaction is carried out at a temperature which is above the thermal decomposition temperature of the ammonium salt and for a time period which is sufficient for the acid or anhydride to react with the ammonia liberated from the ammonium salt and for polymerization to occur. The present method avoids the prior art problems of controlling ammonia losses and water removal. The product polysuccinimide can be readily hydrolyzed to polyaspartic acid or a salt thereof, if desired.Type: GrantFiled: January 28, 1994Date of Patent: February 13, 1996Assignee: Donlar CorporationInventor: Daniel A. Batzel
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Patent number: 5483009Abstract: A moldable and/or extrudable polymer which is useful for the manufacture of surgical devices such as sutures, staples, clips, etc., possesses structural units derived from a cyclic amide monomer containing oxygen, sulfur or nitrogen in the ring.Type: GrantFiled: April 18, 1995Date of Patent: January 9, 1996Assignee: United States Surgical CorporationInventor: Ying Jiang
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Patent number: 5476974Abstract: Normally liquid, omega-hydrofluoroalkyl ether compounds (and selected mixtures thereof) have a saturated perfluoroaliphatic chain of carbon atoms interrupted by one or more ether oxygen atoms. The compounds can be prepared, e.g., by decarboxylation of the corresponding fluoroalkyl ether carboxylic acids and are useful, e.g., in cleaning and drying applications.Type: GrantFiled: May 20, 1994Date of Patent: December 19, 1995Assignee: Minnesota Mining and Manufacturing CompanyInventors: George G. I. Moore, Miguel A. Guerra
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Patent number: 5470943Abstract: This invention relates to a novel fluorine-containing polyimide or polyimide copolymer being colorless and having transparency and very low dielectric characteristics, and has a novel aromatic diamino compound used for the polyimide, a preparation process thereof, a polyimide-based resin composition comprising the polyimide or polyimide copolymer and a fibrous reinforcement, a process for preparing the resin composition, an injection molded article of the resin composition.Type: GrantFiled: December 21, 1994Date of Patent: November 28, 1995Assignee: Mitsui Toatsu Chemicals, Inc.Inventors: Yoshihiro Sakata, Wataru Yamashita, Yuichi Okawa, Shoji Tamai, Tsutomu Ishida, Mitsunori Matsuo, Keizaburo Yamaguchi, Akihiro Yamaguchi
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Patent number: 5466779Abstract: Polysuccinimide is prepared by reacting ammonia gas with liquid maleic anhydride. The reaction is initially carried out at a temperature which is above the melting point of the maleic anhydride but below the boiling point of liquid maleic anhydride for a time period sufficient for the liquid maleic anhydride to react with the ammonia gas to form a reaction product thereof. The reaction product is subsequently polymerized to polysuccinimide. The present method avoids the prior art problems of water removal and minimizes the need for ammonia handling equipment. The polysuccinimide product can be readily hydrolyzed to polyaspartic acid or a salt thereof, if desired.Type: GrantFiled: May 17, 1994Date of Patent: November 14, 1995Assignee: Donlar CorporationInventor: Robert J. Ross
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Patent number: 5463011Abstract: The invention concerns allophanic acid derivatives of formula IR.sup.1 --N(R.sup.2)CO--N(R.sup.3)CO--X.sup.1 --Q--X.sup.2 --GIand pharmaceutically acceptable metabolically labile esters or amides thereof, and pharmaceutically acceptable salts thereof, in which R.sup.1, R.sup.2, R.sup.3, X.sup.1, Q, X.sup.2 and G have the meanings given in the specification. The invention also concerns processes for the preparation of the allophanic acid derivatives of formula I, pharmaceutical compositions containing them and their use as inhibitors of the binding of fibrinogen to glycoprotein IIb/IIIa.Type: GrantFiled: December 29, 1994Date of Patent: October 31, 1995Assignee: Zeneca LimitedInventors: George R. Brown, Richard E. Shute
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Patent number: 5458127Abstract: Novel compounds having use as contrast agents in magnetic resonance imaging, as well as other uses, are described. The compounds are comprised of a copolymer which comprises at least two of a first monomer of the formula X.sub.1 --(CHR.sub.2 CHR.sub.2 -Y).sub.n -(CHR.sub.2).sub.m --CHR.sub.2 CHR.sub.2 13 X.sub.2, wherein X.sub.1 and X.sub.2 are, independently, OH, NH.sub.2, NHR.sub.1, COOH, COOR.sub.1, SH, or Z, Y is O, NH, NR.sub.1, S, or CO, n is 0-10,000, m is 0 or 1, each Z is, independently, Cl, Br, or I, each R.sub.1 is, independently, a C.sub.1 -C.sub.20 substituted alkyl or cycloalkyl, and each R.sub.2 is, independently, H or OH, and at least one of a second monomer which is a polynitrilo chelating agent having at least two COOH, COOR.sub.1, or COZ groups, the first and second monomers being bound to one another to form a copolymer through an ester, amide, or carboxylic thioester linkage of at least one of the OH, NH.sub.2, NHR.sub.1, COOH, COOR.sub.Type: GrantFiled: September 13, 1994Date of Patent: October 17, 1995Assignee: ImaR.sub.x Pharmaceutical Corp.Inventors: Evan C. Unger, Guanli Wu
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Patent number: 5446108Abstract: A moldable and/or extrudable polymer which is useful for the manufacture of surgical devices such as sutures, staples, clips, etc., possesses structural units derived from a cyclic amide monomer containing oxygen, sulfur or nitrogen in the ring.Type: GrantFiled: June 9, 1994Date of Patent: August 29, 1995Assignee: United States Surgical CorporationInventor: Ying Jiang