Heterocyclic-containing Reactant Other Than Cyclic Acid Anhydride As Sole Hetero Ring Patents (Class 528/341)
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Patent number: 4547409Abstract: The invention relates to a self-crosslinking heat-curable binder, in particular for electropaints, which is based on an organic synthetic resin which contains primary and/or secondary and, if desired, also tertiary amino groups and esterified carboxyl groups and is water-dilutable due to partial or complete neutralization with acids. The esterified carboxyl groups are activated in the alcohol component by a substituent which induces a negative inductive effect.Type: GrantFiled: October 2, 1984Date of Patent: October 15, 1985Assignee: BASF Farben & Fasenn A.G.Inventors: Michael Geist, Horst Diefenbach
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Patent number: 4546155Abstract: A latent curing agent for epoxy resin, characterized in that the latent curing agent is an adduct obtained by reacting (a) a polyfunctional epoxy compound, (b) a compound having at least one OH, NH.sub.2, NH or SH group together with a tertiary amino group in the molecule and (c) a carboxylic acid anhydride is a good curing agent for epoxy resins. The present curing agent is useful in formulating storable, one-package, heat-curable epoxy resin-based compositions.Type: GrantFiled: September 26, 1984Date of Patent: October 8, 1985Assignee: Ajinomoto Co., Inc.Inventors: Takeshi Hirose, Nobuo Ito, Kiyomiki Hirai, Koji Takeuchi
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Patent number: 4546148Abstract: Novel polycondensed compounds containing piperidine groups of polycarbamate structure, of the general formula: ##STR1##Type: GrantFiled: July 19, 1984Date of Patent: October 8, 1985Assignee: Ciba-Geigy S.p.A.Inventor: Giuseppe Cantatore
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Patent number: 4536564Abstract: The invention includes novel dicarboxylic acids derived from alkylene or arylene diaminetetraacetec acid corresponding to the formula ##STR1## These dicarboxylic acids derived from alkylene or arylene diaminetetraacetic acid are useful in the preparation of polyamides.Another aspect of the invention is a polymer prepared from between about 1 and 100 mole percent of the diamine salt of the compound represented by formula (I) ##STR2## These polymers are useful in preparing molded articles.Type: GrantFiled: December 9, 1983Date of Patent: August 20, 1985Assignee: The Dow Chemical CompanyInventor: Edmund P. Woo
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Patent number: 4533693Abstract: Novel compositions comprising a high concentration of one or more extended chain homopolymer, copolymer, or block polymer and certain polyphosphoric acids are prepared. Such compositions are optically anisotropic (liquid crystalline), capable of exhibiting excellent cohesive strength, and are especially suited to the production of high molecular weight ordered polymer fibers by dry-jet wet spinning. These liquid crystalline compositions are capable of being drawn through long air gap distances and spun at exceptionally high spin draw ratios. Fibers, films and other articles formed from these liquid crystalline compositions exhibit exceptionally high physical and heat resistant properties.Type: GrantFiled: September 15, 1983Date of Patent: August 6, 1985Assignee: SRI InternationalInventors: James F. Wolfe, Paul D. Sybert, Joanne R. Sybert
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Patent number: 4529793Abstract: A selective permeable membrane comprising a polyquinazolone-based polymer including a repeating unit represented by the formula ##STR1## wherein R.sup.1 is a tetravalent aromatic group, R.sup.2a and R.sup.2b are each independently, an alkyl group or aromatic group, and R.sup.3 is a divalent organic group.Type: GrantFiled: June 20, 1983Date of Patent: July 16, 1985Assignee: Nitto Electric Industrial Co., Ltd.Inventors: Masao Abe, Akio Iwama, Yuzuru Noda, Hisashi Ichinose
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Patent number: 4526721Abstract: The pot life of a mixture of an epoxide resin and a curing agent comprising a compound containing a plurality of amine groups is improved by carbonating the curing agent.Type: GrantFiled: June 27, 1983Date of Patent: July 2, 1985Assignee: Thomas Swan & Co. Ltd.Inventor: Frank B. Richardson
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Patent number: 4520097Abstract: A polyamide polymer having recurring units represented by the formula: ##STR1## wherein R represents at least one divalent organic group, has excellent characteristics such as high sensitivity, high resolving power and excellent dry etching resistance suitable as a negative-type resist in ionizing radiation lithography.Type: GrantFiled: October 4, 1982Date of Patent: May 28, 1985Inventor: Kiyoshi Oguchi
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Patent number: 4519940Abstract: Tractable doped electroactive polymers, comprising recurring units of a N-substituted 1,3,4-triazole ring system, and a sufficient concentration of a charge-compensating ionic dopant associated therewith.Type: GrantFiled: November 17, 1982Date of Patent: May 28, 1985Assignee: Chevron Research CompanyInventors: Albert H. Schroeder, Peter Denisevich, Jr., Shigeto Suzuki, Victor P. Kurkov
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Patent number: 4505842Abstract: Tractable doped electroactive polymers, comprising recurring units of a 1,3-heteroazole, wherein the heteroatom is oxygen, sulfur or substituted nitrogen, and a sufficient concentration of a charge-compensating ionic dopant associated therewith.Type: GrantFiled: November 17, 1982Date of Patent: March 19, 1985Assignee: Chevron Research CompanyInventors: Victor P. Kurkov, Albert H. Schroeder, Peter Denisevich, Jr., Shigeto Suzuki
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Patent number: 4505843Abstract: Tractable doped electroactive polymers, comprising recurring units of a 1,3,4-heterodiazole, wherein the heteroatom is oxygen or sulfur, and a sufficient concentration of a charge-compensating ionic dopant associated therewith.Type: GrantFiled: November 17, 1982Date of Patent: March 19, 1985Assignee: Chevron Research CompanyInventors: Shigeto Suzuki, Victor P. Kurkov, Albert H. Schroeder, Peter Denisevich, Jr.
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Patent number: 4505840Abstract: Tractable doped electroactive polymers, comprising recurring units of a fused nitrogen-containing unsaturated 5,6 membered heterocyclic ring system, are fabricated from the virgin polymer by contacting the polymer with donor or acceptor conductivity modifier atoms or groups of atoms.Type: GrantFiled: November 17, 1982Date of Patent: March 19, 1985Assignee: Chevron Research CompanyInventor: Victor P. Kurkov
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Patent number: 4495335Abstract: The invention relates to a self-crosslinking heatcurable binder, in particular for electropaints, which is based on an organic synthetic resin which contains primary and/or secondary and, if desired, also tertiary amino groups and esterified carboxyl groups and is water-dilutable due to partial or complete neutralization with acids. The esterified carboxyl groups are activated in the alcohol component by a substituent which induces a negative inductive effect.Type: GrantFiled: March 7, 1983Date of Patent: January 22, 1985Assignee: BASF Farben & Fasern AGInventors: Michael Geist, Horst Diefenbach
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Patent number: 4480084Abstract: This invention is directed to polymeric compounds which contain the polyalkylpiperidine radical and at least two primary hydroxyl groups. These compounds are useful as light stabilizers for plastics and coatings. More particularly, the polymeric stabilizers is formed by chain extending polyalkylpiperidine with an excess of epoxy resin to form a diepoxide functional polymer which is then capped with hydroxy functional monomer.Type: GrantFiled: October 13, 1983Date of Patent: October 30, 1984Assignee: Ford Motor CompanyInventors: Panagiotis I. Kordomenos, Delores J. Alexander, David M. Thomson
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Patent number: 4477642Abstract: The invention relates to a selfcrosslinking heat-hardenable binder, in particular for electropaints, which is based on an organic synthetic resin which contains hydroxyl groups and esterified carboxyl groups in the form of carbalkoxymethyl ester groups and is water-dilutable by partial or complete acid-neutralization of amino groups present in the resin.Type: GrantFiled: August 24, 1983Date of Patent: October 16, 1984Assignee: BASF Farben & Fasern AGInventors: Michael Geist, Horst Diefenbach
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Patent number: 4461887Abstract: Disclosed is a class of polymers comprising recurring units of the formula ##STR1## where Mu is a divalent radical having the formula ##STR2## where each of D, D', E and E' is hydrogen, alkyl or substituted-alkyl; and Az is a divalent radical having the formula ##STR3## where each of R and R' is hydrogen, alkyl, aryl, alkaryl or aralkyl and W is a single bond, alkylene or alkenylene; or Az is a divalent radical having the formula ##STR4## where each of Y and Y' represent the atoms necessary to complete a piperazine or substituted-piperazine radical.Molecularly oriented polymers of the invention exhibit birefringence and can be utilized in filter, polarizing and other optical devices.Type: GrantFiled: May 26, 1983Date of Patent: July 24, 1984Assignee: Polaroid CorporationInventors: Howard G. Rogers, Russell A. Gaudiana, Jeannette S. Manello, Ronald A. Sahatjian
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Patent number: 4458054Abstract: Cationic heat-hardenable binders comprising polymers containing amine groups and a crosslinking component which is film-forming with the amine group containing polymer through transesterification at elevated temperatures are described. The binders which are water-dilutable upon protonization of the amine groups comprise(a) 60 to 95% by weight of a polymer having a hydroxyl value of from 40 to 450 mg KOH/g and an amine value of from 20 to 150 mg KOH/g, water-soluble or water-dilutable upon protonation of the basic groups, and(b) 5 to 40% by weight of a cross-linking component of the general formula ##STR1## n having a value of from 1 through 5, R.sub.1 being the moiety of a monoalcohol having from 1 to 8 C-atoms or of a polyol or of a polyamine or of a polyepoxy compound or of a polyisocyanate remaining after reaction with one or more carboxylic acid groups, andR.sub.2 being a straight chain or branched alkyl radical with from 1 to 8 C-atoms.Type: GrantFiled: November 22, 1982Date of Patent: July 3, 1984Assignee: Vianova Kunstharz, A.G.Inventors: Gerhard Schmozer, Heiner Verdino, Wolfgang Daimer
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Patent number: 4444959Abstract: Water-soluble benzylated polyamidoamines which contain from 0.1 to 0.9 mole of benzyl groups per equivalent of nitrogen, and onto which from 20 to 400 parts by weight of ethyleneimine or propyleneimine have been grafted per 100 parts by weight of polyamidoamine, processes for the preparation of the materials, and the use of the materials as cationic assistants in processes for coloring paper with acid dyes and/or direct dyes in an aqueous medium. The papers obtained show a high color strength, with substantially no two sidedness of the coloration.Type: GrantFiled: February 19, 1982Date of Patent: April 24, 1984Assignee: BASF AktiengesellschaftInventors: Guenter Frey, Werner Streit, Rolf Fikentscher, Hans-Juergen Degen, Wolf Guender
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Patent number: 4439565Abstract: Oligomeric esteramides having recurring structural units of the formula ##STR1## where G is a hindered amine radical of formula I or II ##STR2## in which R.sup.1 is hydrogen or alkyl having 1 to 4 carbon atoms, R.sup.2 is hydrogen, alkyl having 1 to 12 carbon atoms, allyl, benzyl, acetyl, acryloyl or cyano, Z.sub.1 is a direct bond, --NHCH.sub.2 CH.sub.2 --, --NHCH.sub.2 CH.sub.2 CH.sub.2 -- or --OCH.sub.2 CH.sub.2 --, Z.sub.2 is ethylene or trimethylene, E is a divalent aliphatic, aromatic or alicyclic radical and L is unsubstituted or substituted alkylene, are useful light stabilizers for plastics.Type: GrantFiled: November 10, 1982Date of Patent: March 27, 1984Assignee: Ciba-Geigy CorporationInventors: Roland A. E. Winter, Roger F. Malherbe, Frank Tieh-Yin Fu
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Patent number: 4420605Abstract: This invention provides a coating composition comprising at least one 1,2 epoxy resin, a modified imidazole catalyst, and a polyfunctional phenol or polyfunctional acid or dicyandiamide.Type: GrantFiled: August 26, 1982Date of Patent: December 13, 1983Assignee: Mobil Oil CorporationInventor: Marvin L. Kaufman
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Patent number: 4400525Abstract: Disclosed is a novel polyglycidyl compound useful as polyfunctional epoxy resins excellent in adhesion, heat resistance and strength. This novel polyglycidyl compound has the general formula: ##STR1## (wherein ##STR2## A method for producing this polyglycidyl compound is also disclosed.Type: GrantFiled: November 17, 1981Date of Patent: August 23, 1983Assignee: Takeda Chemical Industries, Ltd.Inventors: Ichiro Minato, Koichi Shibata, Kimiya Fujinami
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Patent number: 4400500Abstract: This invention relates to polyaminoester thermosetting resins prepared by reacting polyalkylene maleate oligomers with polyfunctional amines via a Michael type addition reaction. The reaction is preferably conducted by a RIM process. Alpha, beta ethylenically unsaturated monomers, which are slow to react with amines, may be added to the reaction to copolymerize with the maleate functionality in a post cure step. The polyaminoester thermosetting resins are useful as plastics, coatings, resin modifiers, and elastomers.Type: GrantFiled: April 30, 1982Date of Patent: August 23, 1983Assignee: Rohm and Haas CompanyInventors: Everett J. Kelley, Casmir S. Ilenda
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Patent number: 4397999Abstract: The present invention relates to oligomeric and/or polymeric precursor stages of polyimidazoles and polyimidazopyrrolones, as well as to a method for preparing these new precursor stages. The invention provides addition products of olefinically unsaturated monoepoxides on amino group-containing polycondensation products of aromatic and/or heterocyclic tetraamino compounds with dicarboxylic-acid chlorides or esters or on amino group-containing polyaddition products of the tetraamino compounds and tetracarboxylic-acid dianhydrides. The radiation-reactive precursor stages according to the invention are suited, for example, for the preparation of highly heat-resistant relief structures.Type: GrantFiled: August 19, 1980Date of Patent: August 9, 1983Assignee: Siemens AktiengesellschaftInventors: Hellmut Ahne, Eberhard Kuhn, Roland Rubner
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Patent number: 4396760Abstract: A thermosettable polyaminoester composition useful as a plastic, coating, resin modifier, and elastomer is provided. The thermosettable polyaminoester is formed by reacting one or more acrylic or methacrylic terminated polyalkylene maleate or fumarate oligomers with one or more polyamines and optionally with one or more alpha, beta-ethylenically unsaturated monomers. The composition is especially useful in the RIM process.Type: GrantFiled: April 30, 1982Date of Patent: August 2, 1983Assignee: Rohm and Haas CompanyInventor: Everett J. Kelley
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Patent number: 4396649Abstract: Tertiary nitrogen-containing chain-extended epoxy resins, capable of forming stable aqueous emulsions, may be produced by chain-extending an epoxy resin using a tertiary nitrogen containing ether or ester polyol for example, particularly, polycaprolactone which has been polymerization initiated by a tertiary amine polyol such as N-methyl diethanolamine. The corresponding amine salt is formed by treatment with an acid for example acetic acid and the resulting cationic polymer may be dispersed in water to form a cationic emulsion capable of being coated onto a substrate by electrodeposition. The chain extended resins, by virtue by their content of free epoxy groups are also usable for cross-linking and other uses.Type: GrantFiled: November 20, 1981Date of Patent: August 2, 1983Assignee: Interox Chemicals LimitedInventors: Brian E. Bailey, Joseph W. Lister
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Patent number: 4393196Abstract: Disclosed is a class of polymers comprising recurring units of the formula ##STR1## where Mu is a divalent radical having the formula ##STR2## where each of D, D', E and E' is hydrogen, alkyl or substituted-alkyl; and Az is a divalent radical having the formula ##STR3## where each of R and R' is hydrogen, alkyl, aryl, alkaryl or aralkyl and W is a single bond, alkylene or alkenylene; or Az is a divalent radical having the formula ##STR4## where each of Y and Y' represent the atoms necessary to complete a piperazine or substituted-piperazine radical.Molecularly oriented polymers of the invention exhibit birefringence and can be utilized in filter, polarizing and other optical devices.Type: GrantFiled: March 2, 1981Date of Patent: July 12, 1983Assignee: Polaroid CorporationInventors: Howard G. Rogers, Russell A. Gaudiana, Jeannette S. Manello, Ronald A. Sahatjian
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Patent number: 4388439Abstract: Disclosed are novel wet-strength resins for paper, said resins being derived by reacting an epihalohydrin, such as epichlorohydrin, with a polyaminopolyamide derived by reaction of a diester of oxalic acid, such as diethyl oxalate, and methylbisaminopropylamine.Type: GrantFiled: October 26, 1981Date of Patent: June 14, 1983Assignee: Hercules IncorporatedInventor: William W. Maslanka
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Patent number: 4379909Abstract: Coating lacquers, particularly useful for coating cans, comprise an epoxide resin, a polycarboxylic acid anhydride curing agent, an organic solvent and an accelerator derived from melamine, benzoguanamine or glycoluril. Particularly useful accelerators are the formaldehyde condensates of these materials and their ethers. The coatings are non-toxic and are cured at temperatures lower than conventional.Type: GrantFiled: October 26, 1981Date of Patent: April 12, 1983Assignees: Hermann Wiederhold GmbH Corp., Imperial Chemical Industries PLCInventors: Hans R. Falkenburg, Siegfried Krause, Robert C. McGuiness
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Patent number: 4374741Abstract: Polyoxyalkylene polyamide lubricants having a terminal carboxylic acid group and a terminal amine group in the same molecule and a degree of polymerization of from 2 to 10 and salts thereof are provided. Stable aqueous based compositions are prepared from the polyamide or its salt, that are useful metal working and hydraulic fluids.Type: GrantFiled: July 21, 1981Date of Patent: February 22, 1983Assignee: Cincinnati Milacron Inc.Inventor: Walter E. Rieder
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Patent number: 4373087Abstract: A novel copolyamide fiber having an excellent initial modulus of elasticity and mechanical strength, is made from a copolyamide consisting essentially of unit A of the formula (A): ##STR1## unit (B) of the formula (B): ##STR2## and unit (C) of the formula (C): ##STR3## wherein CH.sub.3 groups in the formula (A) are located in the ortho-position to NH groups, the sum of the amount of units (A) and (B) is substantially equimolar to the amount of unit (C) and the molar ratio of unit (A) to unit (B) is from 10/90 to 50/50.Type: GrantFiled: March 13, 1981Date of Patent: February 8, 1983Assignee: UBE Industries Ltd.Inventors: Takaho Kaneda, Seiji Ishikawa, Hiroshi Daimon, Toshio Katsura, Tadahiro Hondo, Masahiro Ueda
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Patent number: 4371685Abstract: The invention relates to oligomeric and/or polymeric radiation-reactive precursor stages of polymers on the basis of heterocycles and has the objective to make available radiation-reactive precursor stages of this kind in which the problems arising due to the need of using organic solvents are eliminated. For this purpose, the invention provides addition products of cyclic carboxylic-acid anhydrides with hydroxyl group-containing compounds, where the hydroxyl group-containing compounds represent addition products of olefinically unsaturated monoepoxides on carboxyl group-containing prepolymers of polyimides, polyisoindoloquinazoline diones, polyoxazine diones and polyquinazoline diones or on amino group-containing prepolymers of polyimidazoles and polyimidazopyrrolones or on hydroxyl group-containing prepolymers of polyoxazoles. The radiation-reactive precursor stages according to the invention are suited, for example, for the manufacture of highly heat-resistant relief structues.Type: GrantFiled: June 4, 1981Date of Patent: February 1, 1983Assignee: Siemens AktiengesellschaftInventors: Hellmut Ahne, Eberhard Kuhn, Roland Rubner
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Patent number: 4371674Abstract: Process for the production of water-soluble auxiliaries for the papermaking industry by reacting(a) 1 part by weight of a polyamidoamine obtained by condensing 1 mole of a dicarboxylic acid having from 4 to 10 carbon atoms with from 0.8 to 1.4 moles of a polyalkylene polyamine having from 3 to 10 alkyleneamine units and containing up to 8 ethyleneimine units per basic nitrogen atom with (b) 0.1 to 4 parts by weight of an .alpha.,.omega.-dichloro polyalkylene oxide obtained by reacting a polyalkylene oxide having from 8 to 100 alkylene oxide units with a compound selected from the group consisting of a thionyl chloride and phosgene and then cleaving the reaction products by heating them to a temperature of from 70.degree. to 150.degree. C. in the presence of a tertiary amine as catalyst,as crosslinking agent, at a temperature above 20.degree. C.Type: GrantFiled: July 30, 1980Date of Patent: February 1, 1983Inventors: Otto Hertel, Emil Scharf, Jaroslav Melzer, Rolf Fikentscher
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Patent number: 4371690Abstract: High molecular weight processible polymers derived from 2,6- and 2,7-diacids, diols and diamines of 9,10-dihydro-9,10-ethanoanthracenes and various complementary comonomers are prepared. These are converted into rigid, thermally-stable anthraceno polyesters and polyamides by thermal removal of the 9,10-ethano bridge.Type: GrantFiled: February 9, 1981Date of Patent: February 1, 1983Assignee: E. I. Du Pont de Nemours and CompanyInventors: Burton C. Anderson, August H. Frazer
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Patent number: 4366230Abstract: The invention relates to a method for the preparation of highly heat-resistant relief structures with a base of polymers of heterocyclic structure by applying radiation-sensitive soluble polymer precursor stages in the form of a film or foil to a substrate, irradiating the film or foil through negative patterns with actinic light or by deflecting a light, electron or ion beam, removing the non-irradiated film or foil portions and, optionally, by subsequent annealing, as well as to the use of relief structures prepared in this manner.Type: GrantFiled: June 4, 1981Date of Patent: December 28, 1982Assignee: Siemens AktiengesellschaftInventors: Hellmut Ahne, Eberhard Kuhn, Roland Rubner
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Patent number: 4360649Abstract: A curable resin composition comprising an epoxy resin, a hardener and an epoxy compound-dialkylamine adduct as a latent hardener. The composition is excellent in storage stability at ambient temperatures and rapidly curable under heating conditions, and is usable as adhesives, paints, molding materials, casting materials and so on.Type: GrantFiled: April 15, 1981Date of Patent: November 23, 1982Assignee: Sumitomo Chemical Company, LimitedInventors: Kunimasa Kamio, Koichi Okuno, Satoru Haraguchi, Hiroyuki Yamaguchi, Koichi Ohashi
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Patent number: 4359567Abstract: Articulated p-benzobisoxazole and p-benzobisthiazole polymers which contain a limited number of 3,3'-biphenyl or 2,2'-bipyridyl segments are synthesized, with inherent viscosities as high as 14 dl/g being recorded. The 3,3'-biphenyl or 2,2'-bipyridyl segments in the p-benzobisoxazole and p-benzobisthiazole polymers impart flexibility to the polymers without adversely affecting the thermooxidative stability. While the resultant articulated polymers exhibit liquid crystalline behavior in methanesulfonic acid and form strong cast films from that solvent, they also exhibit thermooxidative stability comparable to other p-benzobisthiazole and p-benzobisoxazole polymers. The resultant films are useful for the fabrication of high strength laminates to be used in severe environment structural applications.Type: GrantFiled: October 2, 1981Date of Patent: November 16, 1982Assignee: The United States of America as represented by the Secretary of the Air ForceInventor: Robert C. Evers
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Patent number: 4357463Abstract: Polyester silicate resinous products are produced by mixing an organic epoxide compound, hydrated silica, Lewis acid and a polycarboxylic acid and/or polycarboxylic acid anhydride, then heating the mixture to from 150.degree. C. to 250.degree. C. for 30 minutes to 4 hours. The polyester is silicate resinous products may be used as a coating agent, as a molding powder and as an adhesive.Type: GrantFiled: December 3, 1981Date of Patent: November 2, 1982Inventor: David H. Blount
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Patent number: 4356291Abstract: Purified hexafluoropropylene oxide is produced by scrubbing to remove impurities that inhibit polymerization of hexafluoropropylene oxide, thus permitting the preparation of polymers having a degree of polymerization of more than 200, including end-capped and chain-extended derivatives thereof.Type: GrantFiled: April 3, 1981Date of Patent: October 26, 1982Assignee: E. I. Du Pont de Nemours and CompanyInventor: Thomas R. Darling
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Patent number: 4350804Abstract: The invention is directed to curable compositions comprising an azole-functional resin and a labile metal-ligand complex. The azole-functional resin is the reaction product of a monomeric or polymeric resin and a reactive N-heterocyclic compound containing at least two nuclear nitrogen atoms in a 5-membered ring structure capable of forming stable metal-ligand complexes. Mixtures of azole-functional resins also may be used with the labile-metal ligand complexes in the compositions of the invention.Type: GrantFiled: November 21, 1980Date of Patent: September 21, 1982Assignee: PPG Industries, Inc.Inventors: John S. Ostrowski, John F. Grunewalder, Nicholas T. Castellucci
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Patent number: 4350781Abstract: A polymer precursor containing an oxazolin-2-one ring is made by reacting (a) an amino-reactive group containing compound having at least two groups capable of entering into an addition or condensation reaction with primary or secondary aromatically-bound amino groups with (b) an aromatic amine having at least one primary or secondary aromatically-bound amino group and at least one condensed oxazolin-2-one ring. The reactants are used in quantities such that for each aromatically bound primary or secondary amino group there are from 0.95 to 5 groups present in the amino-reactive group containing compound which are capable of reacting with the amino group. These polymer precursors may be used to produce high molecular weight polymers useful in the production of solid molded products, adhesives, foam plastics and coatings.Type: GrantFiled: July 24, 1981Date of Patent: September 21, 1982Assignee: Bayer AktiengesellschaftInventors: Werner Rasshofer, Gerhard Grogler, Holger Meyborg
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Patent number: 4343931Abstract: A body absorbable polymeric material for implantation which is a condensation product of reacting a diamine with lactic or glycolic acid to form a diamidediol which is then reacted with a bischloroformate or a compound selected from the group consisting of dicarboxylic acids, methyl and ethyl esters of dicarboxylic acids, diacidchlorides, and anhydrides of a dicarboxylic acid.Type: GrantFiled: December 17, 1979Date of Patent: August 10, 1982Assignee: Minnesota Mining and Manufacturing CompanyInventor: Thomas H. Barrows
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Patent number: 4338225Abstract: A functionally terminated polybutadiene polymer is reacted with an epoxide to produce an epoxide terminated polybutadiene. A toughening agent and a peroxide free radical initiator are mixed with the epoxy terminated polybutadiene, and upon reaction a tough thermoset resin is produced having advanced chemical, electrical, and thermomechanical properties. Particular improvements are in the resistant-to-moisture and the tensile strain-to-failure properties.Type: GrantFiled: August 4, 1980Date of Patent: July 6, 1982Assignee: The Boeing CompanyInventor: Clyde H. Sheppard
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Patent number: 4324713Abstract: A two-package solventless rust preventive material comprises (A) a sprayable component essentially containing a liquid epoxy resin and a liquid polycarboxylic acid anhydride and (B) a sprayable component essentially containing a liquid primary or secondary amino compound and a curing accelerator, at least one of said components (A) and (B) essentially comprising a non-reactive epoxy resin diluent having a molecular weight of 300 to 4,000 and an electrically conductive powder.Type: GrantFiled: February 4, 1980Date of Patent: April 13, 1982Assignees: Nippon Zeon Co. Ltd., Nisson Motor Co. Ltd.Inventors: Ryuji Kita, Hisataka Komai, Makoto Wakabayashi, Haruyoshi Takagishi
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Patent number: 4319019Abstract: Water-soluble polyamines which are obtainable by reacting(A) one or more water-soluble or water-dispersible basic polyamides which have been prepared by condensation of aliphatic polyamines containing at least two primary amino groups and at least one secondary or tertiary amino group, or of mixtures of these polyamines and of aliphatic, cycloaliphatic, araliphatic or heterocyclic polyamines containing two primary or two secondary amino groups or one primary and one secondary amino group, with saturated aliphatic dicarboxylic acids containing 4-10 carbon atoms, or with functional derivatives thereof and optionally with .omega.-aminocarboxylic acids containing at least 3 carbon atoms, or lactams thereof,(B) one or more polyalkylenepolyamines of the general formula ##STR1## in which R denotes H or CH.sub.Type: GrantFiled: July 14, 1980Date of Patent: March 9, 1982Assignee: Bayer AktiengesellschaftInventors: Wolfgang Lehmann, Friedhelm Muller, Gunther Cramn, Knut Hammerstrom, Wilfried Lobach
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Patent number: 4317902Abstract: Certain fiber-forming aromatic polyamides having a high solubility in organic solvents used in their preparation are provided. The polyamides are prepared from diacid chlorides and from diamines containing sulfonate linkages by the low temperature solution polymerization technique. Fibers of the polyamides have a high modulus to tenacity ratio.Type: GrantFiled: May 19, 1980Date of Patent: March 2, 1982Assignee: Monsanto CompanyInventor: Helmuth E. Hinderer
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Patent number: 4312974Abstract: Novel unitary, storable, heat-curable epoxy resin systems are prepared which contain a polyepoxide and a curing amount of a salt of piperazine and a C.sub.3 -C.sub.21 polycarboxylic acid. In a preferred aspect the salt is present in a stoichiometric amount. The resin system is cured into an insoluble, infusible resin product by heating thereof at a temperature greater than 50.degree. C., preferably 50.degree.-250.degree. C., for a time sufficient to complete the cure.Type: GrantFiled: April 18, 1980Date of Patent: January 26, 1982Assignee: National Starch and Chemical CorporationInventor: Wen B. Chiao
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Patent number: 4309531Abstract: The application discloses compositions which can be shaped to form yarns, fibers, films, membranes and fibrids. They contain a particular statistical or ordered copolyamide, with an inherent viscosity of at least 1, or units containing radicals of which at least 5% are flexible radicals and the others are rigid radicals. These compositions make it possible to produce yarns, fibers, films, membranes and fibrids possessing superior mechanical properties, which find applications in the textile field, as reinforcements in composite materials in the rubber industry and coated fabrics.Type: GrantFiled: May 23, 1980Date of Patent: January 5, 1982Assignee: Rhone-Poulenc-TextileInventors: Joseph Kyritsos, Jean Sacco
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Patent number: 4308188Abstract: A water-dilutable polymer for use in water-borne coatings comprising the half ester zwitterion reaction product of a polymer containing cyclic acid anhydride groups with an alkanolamine of the formula ##STR1## where R is hydrogen or hydroxy, R.sup.1 is hydrogen, hydroxy or methyl and can be the same or different, and R.sup.2 is hydrogen or an aliphatic hydrocarbon group of from 1 to 3 carbon atoms.Type: GrantFiled: June 2, 1980Date of Patent: December 29, 1981Assignee: International Minerals & Chemical Corp.Inventors: Zeno W. Wicks, Milton E. Woods, Chiew-Wah Koay
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Patent number: 4304889Abstract: A solvent resistant epoxy resin composition comprises a vicinal polyepoxide, an aromatic polyamine and a condensation product of a polyoxyalkylenediamine of about 400 molecular weight or below with at least two moles of maleic anhydride.Type: GrantFiled: July 11, 1980Date of Patent: December 8, 1981Assignee: Texaco Inc.Inventors: Harold G. Waddill, Heinz Schulze
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Patent number: RE31522Abstract: Polyoxyalkylene polyamide lubricants having a terminal carboxylic acid group and a terminal amine group in the same molecule and a degree of polymerization of from 2 to 10 and salts thereof are provided. Stable aqueous based compositions are prepared from the polyamide or its salt, that are useful metal working and hydraulic fluids.Type: GrantFiled: April 1, 1983Date of Patent: February 14, 1984Assignee: Cincinnati Milacron Inc.Inventor: Walter E. Rieder