Cycloaliphatic Ring-containing Reactant Patents (Class 528/346)
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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: 4525577Abstract: Poly(imide)-containing polymers suitable for use in molding or casting applications are formed by polymerization of an anhydride-containing precursor of the formula ##STR1## wherein Y is a divalent hydrocarbon group or a divalent hydrocarbon group containing oxygen, sulfur, nitrogen, silicon, phosphorus or halogen atoms;R is phenyl or C.sub.1-10 alkyl; andX is an oligomer or polymer-forming reactive moiety with reactive nitrogen-containing polyfunctional comonomers.Type: GrantFiled: April 17, 1984Date of Patent: June 25, 1985Assignee: The Dow Chemical CompanyInventors: Edmund P. Woo, Michael J. Mullins
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Patent number: 4520190Abstract: Polyamides suitable for fiber spinning are produced by contacting a diamine, a dinitrile and water in a process wherein the diamine is added gradually to the dinitrile over the course of polymerization in the presence of an oxygenated phosphorus compound catalyst.Type: GrantFiled: September 19, 1983Date of Patent: May 28, 1985Assignee: The Standard Oil CompanyInventors: Gerald P. Coffey, Benedict S. Curatolo, Rimvydas L. Cepulis
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Patent number: 4495344Abstract: Polyamides, prepared from cycloalkylalkylenediamines such as 5-cyclohexyl-5-methyl-1,9-nonanediamine and dicarboxylic acids such as adipic or azelaic acid, plus a tricarboxylic acid for branching such as benzene tricarboxylic acid, are tough, clear resins useful for molding and fibers.Type: GrantFiled: June 3, 1983Date of Patent: January 22, 1985Assignee: Phillips Petroleum CompanyInventors: Charles A. Drake, Stanley D. Turk
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Patent number: 4471088Abstract: A copolyamide comprised of undecamethylenehexahydroterephthalamide units and hexamethylenehexahydroterephthalamide units having a trans isomer ratio of hexahydroterephthalic acid residues of 57 to 83 percent is provided. The copolyamide is suitable for injection and extrusion molding. The copolyamide is prepared by a process comprising heating an equimolar salt of undecamethylenediamine and hexahydroterephthalic acid and an equimolar salt of hexamethylenediamine and hexahydroterephthalic acid at a maximum temperature of about 280 to 360.degree. C. to stably melt-polymerize the copolyamide. A copolyamide molding composition comprised of the copolyamide and an inorganic reinforcing agent can be formed into various molded articles having excellent properties.Type: GrantFiled: June 28, 1982Date of Patent: September 11, 1984Assignee: Toray Industries, Inc.Inventors: Kazumasa Chiba, Nobuo Kato, Kazuhiko Kobayashi
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Patent number: 4465824Abstract: Polyamides, prepared from aralkylenediamines, such as 5-phenyl-5-methyl-1,9-nonanediamine and dicarboxylic acids such as adipic or azelaic acid are tough, clear resins useful for molding and fibers.Type: GrantFiled: June 3, 1983Date of Patent: August 14, 1984Assignee: Phillips Petroleum CompanyInventors: Charles A. Drake, Stanley D. Turk
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Patent number: 4465822Abstract: Polyamides, prepared from aralkylenediamines such as 5-phenyl-5-methyl-1,9-nonanediamine and dicarboxylic acids such as adipic or azelaic acid, optionally with a tricarboxylic acid for branching such as benzene tricarboxylic acid, are tough, clear resins useful for molding and fibers.Type: GrantFiled: June 3, 1983Date of Patent: August 14, 1984Assignee: Phillips Petroleum CompanyInventors: Stanley D. Turk, Charles A. Drake
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Patent number: 4436898Abstract: Production of spinnable polyhexamethylene adipamide of high molecular weight from adiponitrile, hexamethylene diamine, water and additives, preferably continuously in a reaction cascade and in a finisher as the final stage, catalytically accelerated by catalysts as disclosed.It has now been discovered that polyamides can be produced from dinitriles, diamines and excess water in the presence of catalysts selected from the group consisting of: (1) oxygen-containing phosphorous compounds; (2) oxygen-containing boron compounds; (3) acidic oxygen-containing sulfur compounds; and (4) hydrogen halide and ammonium or ammonium alkyl salt thereof.Type: GrantFiled: May 10, 1982Date of Patent: March 13, 1984Assignee: Davy McKee Aktiengesellschaft, BorsigalleInventors: Hansdieter Hofmann, Hans-Jochen Rothe, Georg Skupin, Konrad Wolff
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Patent number: 4408037Abstract: Aralkylenediamines such as 5-phenyl-5-methyl-1,9-nonanediamine, or cycloalkylalkylenediamines such as 5-cyclohexyl-5-methyl-1,9-nonanediamine, are polymerized with dicarboxylic acids such as adipic or azelaic acid, optionally with a tricarboxylic acid such as benzene tricarboxylic acid, to produce tough clear colorless polyamide resins useful for molding and fibers.Type: GrantFiled: November 30, 1981Date of Patent: October 4, 1983Assignee: Phillips Petroleum CompanyInventors: Charles A. Drake, Stanley D. Turk
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Patent number: 4377683Abstract: Transparent copolyamides are obtained by reacting a mixture (A) of isophoronediamine and isophthalic acid, terephthalic acid or a mixture of isophthalic acid and terephthalic acid with a mixture (B) of a diamine ##STR1## and terephthalic acid or a mixture of terephthalic acid and isophthalic acid or with a mixture (C) of a diamine ##STR2## and terephthalic acid or isophthalic acid or mixtures thereof, R', R" and R.sub.1 to R.sub.6 being as defined in the patent claim.The reaction can also be carried out with an excess of diamine and with addition of H.sub.3 PO.sub.2 or salts thereof or white phosphorus.The novel copolyamides are distinguished by good thermoplastic processability, low water absorption and good resistance to hydrolysis, and are useful for the production of transparent mouldings.Type: GrantFiled: June 12, 1981Date of Patent: March 22, 1983Assignee: Ciba-Geigy CorporationInventors: Josef Pfeifer, Dieter Reinehr
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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: 4373088Abstract: Transparent polyamides have repeating structural units of the formula--HN--R--NH--OC--R'--CO--wherein R' is the hydrocarbon radical of terephthalic acid or isophthalic acid and R comprises 60-95 mole percent of a divalent hydrocarbon radical including 5-methylnonamethylene, 2,4-dimethyloctamethylene and 2,4,6-trimethylheptamethylene and 40-5 mole percent of a cyclic divalent hydrocarbon radical of the formula ##STR1## The polyamides so prepared can be used for building components and for fibers and sheets.Type: GrantFiled: May 9, 1980Date of Patent: February 8, 1983Inventors: Josef Disteldorf, Werner Hubel, Siegfried Brandt, Hans-Jurgen Haage
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Patent number: 4369305Abstract: Novel tetrapolymers are described consisting of equimolar amounts of (1) isophthalic and terephthalic acids, and (2) hexamethylene diamine and PACM in specific amounts, which produce transparent molded articles.Type: GrantFiled: April 20, 1981Date of Patent: January 18, 1983Assignee: E. I. Du Pont de Nemours and CompanyInventor: Rolando U. Pagilagan
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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: 4312719Abstract: A process for dissolving copper in an aqueous nylon salt solution without dissolving other substances is provided by applying an electrical potential between two copper electrodes immersed in the solution. Upon melt polymerization of the salt solution, copper is incorporated into the resulting nylon. The amount of copper dissolved in the solution can be closely monitored and controlled.Type: GrantFiled: November 24, 1980Date of Patent: January 26, 1982Assignee: Monsanto CompanyInventors: LeMoyne W. Plischke, Joseph M. Kiefer
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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: 4297480Abstract: There are described transparent polyamides, and processes for producing them, which polyamides consist of recurring structural elements of the formula I ##STR1## or of recurring structural elements of the formula II ##STR2## [carbonyl groups in the structural elements (II) bound in the 1,3- and/or 1,4-position to the benzene nucleus, R.sub.1 =C.sub.1-12 -alkyl, R.sub.2 =H, C.sub.1-12 -alkyl, R.sub.3 =C.sub.1-12 -alkyl, C.sub.4-12 -cycloalkyl, C.sub.7-8 -aralkyl, unsubstituted or substituted aryl, R.sub.4 =H, C.sub.1-12 -alkyl, C.sub.4-12 -cycloalkyl, C.sub.7-8 -aralkyl, or unsubstituted or substituted aryl, or R.sub.3 /R.sub.4 together=C.sub.3-11 -alkylene, R.sub.5 /R.sub.6 independently of one another=hydrogen or methyl, and R.sub.7 /R.sub.8 together=C.sub.3-11 -alkylene].Type: GrantFiled: October 9, 1979Date of Patent: October 27, 1981Assignee: Giba-Geigy CorporationInventors: Josef Pfeifer, Dieter Reinehr
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Patent number: 4293687Abstract: New biscyclohexylamine derivatives represented by the following formula ##STR1## wherein R.sup.1 to R.sup.4 represent identical or different alkyl groups having 1 to 6 carbon atoms;X is a single bond,a divalent aliphatic straight-chain or branched-chain group having from 2 to 10 carbon atoms,a methylene group, when at least one of the substituents R.sup.1 to R.sup.4 has more than 1 carbon atom,a divalent cycloaliphatic group having from 6 to 12 carbon atoms,a divalent aliphatic straight-chain or branched-chain group with cycloaliphatic substituents having from 6 to 8 carbon atoms,a divalent straight-chain or branched-chain dialkyl cyclohexane group having from 8 to 12 carbon atoms and a divalent straight-chain or branched-chain dialkyl benzene group having from 8 to 12 carbon atoms.Type: GrantFiled: May 5, 1980Date of Patent: October 6, 1981Assignee: Bayer AktiengesellschaftInventors: Oskar Weissel, Volker Serini, Hans-Josef Buysch
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Patent number: 4293688Abstract: A new polyamide composed at least primarily of 1,4-cyclohexane dicarboxylic acid and 5-methyl-1,9-nonanediamine, the polyamide having less than 5 olefinic double bonds per 100 diamine units, an inherent viscosity of at least about 0.6, a polymer melt temperature of at least about 200.degree. C., a T.sub.g in the range of about 90.degree. to about 130.degree. C., and a T.sub.m in the range of about 260.degree. C. to about 310.degree. C. can be formed into fibers without the use of plasticizers. Such fibers can be produced with a boiling water shrinkage of less than 30 percent.Type: GrantFiled: August 31, 1973Date of Patent: October 6, 1981Assignee: Phillips Petroleum Co.Inventors: Robert W. Campbell, H. Wayne Hill, Jr.
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Patent number: 4279834Abstract: New dinitriles are prepared by reacting an alpha, beta saturated nitrile with an alpha, beta unsaturated nitrile. For this preparation subzero temperatures are preferred. Higher diamines can be prepared by hydrogenating the dinitriles thus obtained, such diamines being reacted with a dicarboxylic acid or a salt, ester or chloride of such an acid to prepare polyamides having an amorphous character, i.e. transparent polyamides.Type: GrantFiled: January 17, 1980Date of Patent: July 21, 1981Assignee: Anic S.p.A.Inventors: Aldo Prevedello, Maurizio Brunelli, Edoardo Platone
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Patent number: 4275239Abstract: The partially crystalline polyamides according to the invention are obtained by reacting terephthalic acid, or an amide-forming derivative thereof, with a diamine of the formula ##STR1## in which R.sub.1 and R.sub.2 singly or together are organic radicals. The reaction mixture can also contain up to 30% by weight of other amide-forming substances (aminocarboxylic acids or lactams, or mixtures of dicarboxylic acids and diamines), provided the formation of the partial crystallinity of the resulting polyamides is retained. The polyamides are suitable for producing moulded products of the most varied types. They are particularly applicable for producing filaments and fibres.Type: GrantFiled: February 4, 1980Date of Patent: June 23, 1981Assignee: Ciba-Geigy CorporationInventors: Josef Pfeifer, Heinz Peter
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Patent number: 4268661Abstract: Polyamides are described which are useful for injection molding and which are produced by the polycondensation of (a) a diaminodicyclohexane or a diaminodicyclohexylalkane, (b) a polyamide-forming aromatic dicarboxylic acid, and (c) an aliphatic dicarboxylic acid-diamine mixture or salt thereof.Type: GrantFiled: February 19, 1980Date of Patent: May 19, 1981Assignee: Inventa AG fur Forschung und Patentverwertung, ZurichInventors: Eduard Schmid, Wolfgang Griehl
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Patent number: 4264762Abstract: A glass-clear nylon based on aromatic dicarboxylic acids and dialicyclic diamines is prepared by polycondensing isophthalic acid with a mixture of 3,3'-dimethyl-4,4'-diamino-dicyclohexylmethane and hexamethylenediamine.The nylons may be used for the production of moldings, especially by injection-molding.Type: GrantFiled: October 18, 1979Date of Patent: April 28, 1981Assignee: BASF AktiengesellschaftInventors: Claus Cordes, Richard Pflueger, Franz Schmidt, Georg N. Simon
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Patent number: 4258177Abstract: There are described transparent copolyamides which consist of recurring structural elements of the formula I ##STR1## wherein R.sub.1 to R.sub.4 independently of one another are each hydrogen or alkyl having 1-4 C atoms, R.sub.5 and R.sub.6 independently of one another are each ethyl, n-propyl, isobutyl, --CH(R.sub.7)(R.sub.8) or --CH.sub.2 CH(R.sub.9)(R.sub.10), R.sub.7 is alkyl having 1-8 C atoms, R.sub.8 is alkyl having 1-4 C atoms, R.sub.9 is hydrogen or alkyl having 1-4 C atoms, and R.sub.10 is alkyl having 2-8 C atoms, and wherein the proportion of structural elements (I) where R.sub.5 /R.sub.6 .noteq.--CH.sub.2 CH(R.sub.9)(R.sub.10) is 10-40 percent by weight, and where R.sub.5 /R.sub.6 =--CH.sub.2 CH(R.sub.9)(R.sub.10) it is 35-55 percent by weight, relative to the total weight of the polymer.Type: GrantFiled: October 9, 1979Date of Patent: March 24, 1981Assignee: Ciba-Geigy CorporationInventor: Josef Pfeifer
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Patent number: 4258176Abstract: There are described transparent copolyamides which are obtained by reaction of a mixture (A) consisting of essentially stoichiometric amounts of a diamine ##STR1## and isophthalic acid or terephthalic acid, or a mixture of isophthalic acid and terephthalic acid, with a mixture (B) consisting of essentially stoichiometric amounts of a diamine ##STR2## and terephthalic acid or a mixture of terephthalic acid and isophthalic acid, or with a mixture (C) consisting of essentially stoichiometric amounts of a diamine ##STR3## and terephthalic acid or isophthalic acid or mixtures thereof, wherein R', R" and R.sub.1 to R.sub.11 have the meanings given in claim 1.The novel copolyamides are distinguished by good thermoplastic processing characteristics, by low water absorption and by good stability to hydrolysis, and are suitable for producing transparent moulded articles.Type: GrantFiled: October 9, 1979Date of Patent: March 24, 1981Assignee: Ciba-Geigy CorporationInventors: Josef Pfeifer, Dieter Reinehr
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Patent number: 4255560Abstract: Copolyamides with improved properties are obtained by polycondensing aliphatic and/or aromatic dicarboxylic acids with an amine mixture of diaminodicyclohexyl methanes and optionally homologous polycyclohexyl polyamines and one or more aliphatic diamines, said copolyamide being useful for the production of shaped articles such as films, sheets and injection moldings.Type: GrantFiled: December 12, 1979Date of Patent: March 10, 1981Assignee: Bayer AktiengesellschaftInventors: Rolf-Volker Meyer, Rolf Dhein, Friedrich Fahnler, Dietrich Michael, Hans Rudolph, Werner Nielinger
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Patent number: 4255559Abstract: There are described transparent copolyamides which are obtained by reaction of a mixture A) consisting of essentially stoichiometric amounts of a diamine of the formula ##STR1## and isophthalic acid, a mixture of isophthalic acid and terephthalic acid, or amide-forming derivatives thereof, in a molar ratio isophthatic acid(derivative) : terephthalic acid(derivative) of 5:5 to 10:0, with a mixture B) consisting of essentially stoichiometric amounts of a diamine of the formula ##STR2## and a dicarboxylic acid of the formulaHOOC--Z--COOH (III),or an amide-forming derivative thereof [R.sub.1 to R.sub.4 independently of each other are each H or C.sub.1-4 -alkyl, the proportion of mixture A) is 40-60 percent by weight, and R.sub.5 and R.sub.6 independently of one another are each cycloalkyl which has 5-12 ring C atoms and which is unsubstituted or is substituted by C.sub.1-4 -alkyl, or they are each isopropyl, sec-butyl or isobutyl; or the proportion of mixture A) is 50-70 percent by weight, R.sub.5 /R.sub.Type: GrantFiled: October 9, 1979Date of Patent: March 10, 1981Assignee: Ciba-Geigy CorporationInventor: Josef Pfeifer
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Patent number: 4251653Abstract: A process for the manufacture of nylons by heating an aqueous solution of a salt of an alkanedicarboxylic acid of 6 to 12 carbon atoms and a diamine of the formula NH.sub.2 RNH.sub.2, where R is alkylene of 6 to 12 carbon atoms or is a radical ##STR1## to a temperature at which a nylon is formed, under superatmospheric pressure and with removal of water. The solution used is an aqueous solution of from 75 to 90 percent strength by weight of a salt of a dicarboxylic acid and a diamine, which solution has been obtained by neutralizing a less concentrated salt solution, which contains an appropriate dissolved excess of the particular dicarboxylic acid, with the corresponding diamine. The nylons obtained are used for the manufacture of moldings.Type: GrantFiled: June 8, 1978Date of Patent: February 17, 1981Assignee: BASF AktiengesellschaftInventors: Albrecht Eckell, Paul Matthies, Georg Pilz, Rudi-Heinz Rotzoll
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Patent number: 4250299Abstract: 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: December 15, 1978Date of Patent: February 10, 1981Assignee: Bayer AktiengesellschaftInventors: Wolfgang Lehmann, Friedhelm Muller, Gunther Cramm, Knut Hammerstrom, Wilfried Lobach
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Patent number: 4250291Abstract: A polyamide copolymer, useful as a melt adhesive especially for textiles, produced from the following monomers1. An unbranched aliphatic dicarboxylic acid with 6-20 C-atoms;2. A diamine mixture consisting of(a) 20-80 mol percent, unbranched aliphatic diamines with 6-20 C-atoms; and(b) 80-20 mol percent branched aliphatic and/or cycloaliphatic diamines;said copolymer having a molecular weight of 2000-40000.Type: GrantFiled: June 9, 1978Date of Patent: February 10, 1981Assignee: Veba Chemie AktiengesellschaftInventors: Fritz Gude, Siegfried Brandt
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Patent number: 4248654Abstract: A polyamide copolymer, useful as a melt adhesive especially for textiles, produced from the following monomers1. An unbranched aliphatic dicarboxylic acid with 6-20 C-atoms;2. A diamine mixture consisting of(a) 20-80 mol percent, unbranched aliphatic diamines with 6-20 C-atoms; and(b) 80-20 mol percent branched aliphatic and/or cycloaliphatic diamines;said copolymer having a molecular weight of 2000-40000.Type: GrantFiled: February 4, 1976Date of Patent: February 3, 1981Assignee: Veba-Chemie AktiengesellschaftInventors: Fritz Gude, Siegfried Brandt
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Patent number: 4246395Abstract: Fiber-forming 6T/6I terpolyamides having melting points below 320.degree. C., glass transition temperatures above 115.degree. C. and good thermal stablities are provided. The terpolyamides may be prepared by melt polymerization and melt spun into useful fibers.Type: GrantFiled: July 25, 1979Date of Patent: January 20, 1981Assignee: Monsanto CompanyInventor: George A. Mortimer
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Patent number: 4232131Abstract: Condensation polymers or addition polymers which contain sterically hindered polyalkylpiperidine groups are proposed as light stabilizers for plastics. The polymers concerned are relatively low-molecular polymers and a difunctional derivative of a polyalkylpiperidine is additionally used for the manufacture of these. The piperidine radical can be present in the main chain or as a side group or the polymeric stabilizer. Polymeric stabilizers of this type do not tend to migrate out of the plastic or to be removed by extraction; they are therefore very permanent in use.Type: GrantFiled: November 13, 1978Date of Patent: November 4, 1980Assignee: Ciba-Geigy CorporationInventors: Jean Rody, Michael Rasberger
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Patent number: 4232145Abstract: Polyamides are described which are useful for injection molding and which are produced by the polycondensation of (a) a diaminodicyclohexane or a diaminodicyclohexylalkane, (b) a polyamide-forming aromatic dicarboxylic acid of more than 9 carbon atoms, and (c) an .omega.-amino-acid, a lactam of more than 9 carbon atoms, or an aliphatic dicarboxylic acid-diamine mixture or salt thereof.Type: GrantFiled: December 18, 1978Date of Patent: November 4, 1980Assignee: Inventa AG fur Forschung und Patentverwertung, ZurichInventors: Eduard Schmid, Wolfgang Griehl
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Patent number: 4231913Abstract: 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: March 28, 1978Date of Patent: November 4, 1980Assignee: Rhone-Poulenc-TextileInventors: Joseph Kyritsos, Jean Sacco
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Patent number: 4229567Abstract: Copolyamides derived from a mixture of short-chain and long-chain saturated aliphatic dicarboxylic acids, piperazine and a polyoxyalkylene diamine are excellent hot melt adhesives useful with a variety of substrates. These thermoplastic copolyamide resins are particularly useful adhesives for vinyl materials and are resistant to creep.Type: GrantFiled: February 8, 1979Date of Patent: October 21, 1980Assignee: Emery Industries, Inc.Inventor: Hubert J. Sharkey
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Patent number: 4225701Abstract: The partially crystalline polyamides according to the invention are obtained by reacting terephthalic acid, or an amide-forming derivative thereof, with a diamine of the formula ##STR1## in which R.sub.1 and R.sub.2 singly or together are organic radicals. The reaction mixture can also contain up to 30% by weight of other amide-forming substances (aminocarboxylic acids or lactams, or mixtures of dicarboxylic acids and diamines), provided the formation of the partial crystallinity of the resulting polyamides is retained. The polyamides are suitable for producing moulded products of the most varied types. They are particularly applicable for producing filaments and fibres.Type: GrantFiled: October 26, 1978Date of Patent: September 30, 1980Assignee: Ciba-Geigy CorporationInventors: Josef Pfeifer, Heinz Peter
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Patent number: 4219636Abstract: Processes for the production of polyamides wherein a salt of isophthalic acid and hexamethylene diamine are polycondensed in the presence of formic acid.Type: GrantFiled: September 22, 1978Date of Patent: August 26, 1980Assignee: Bayer AktiengesellschaftInventors: Werner Nielinger, Dieter Neuray, Bert Brassat
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Patent number: 4215068Abstract: 1,3-Dicyanocyclopentane is prepared by the hydrocyanation of 2-cyanocyclopentene in the presence of a catalyst system comprising a zero valent nickel complex, free of carbon monoxide, and a promoting amount of a metal compound such as zinc chloride.Type: GrantFiled: April 2, 1979Date of Patent: July 29, 1980Assignee: Gulf Research & Development CompanyInventors: Ching-Yong Wu, Harold E. Swift
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Patent number: 4213884Abstract: A process for the manufacture of a highly concentrated aqueous solution of a salt of a dicarboxylic acid and a diamine, as well as of a nylon precondensate, by reacting an alkanedicarboxylic acid of 6 to 12 carbon atoms and a diamine of the formula NH.sub.2 RNH.sub.2, where R is alkylene of 6 to 12 carbon atoms or is ##STR1## An aqueous solution, of lower concentration, of a salt of a dicarboxylic acid and a diamine, containing an appropriate dissolved excess of the particular dicarboxylic acid, is reacted with the particular diamine in the molten state, in an equivalent amount to the dissolved dicarboxylic acid, the reaction being carried out under superatmospheric pressure and the final reaction temperature being kept at from 140.degree. to 210.degree. C. The solution obtained is used for the manufacture of a nylon.Type: GrantFiled: June 8, 1978Date of Patent: July 22, 1980Assignee: BASF AktiengesellschaftInventors: Albrecht Eckell, Paul Matthies, Georg Pilz, Rudi-Heinz Rotzoll
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Patent number: 4210743Abstract: The invention provides transparent polyamides which have a specific viscosity of at least 0.4 dl/g (0.5% in m-cresol at 25.degree. C.). They consist of recurring structural units of the formula I ##STR1## and, as the case may be, of recurring structural units of the formula II ##STR2## wherein X.sub.1 represents ##STR3## X.sub.2 represents ##STR4## R.sub.1 and R.sub.8 represent in general alkyl radicals. R.sub.1 to R.sub.3 can also represent hydrogen, and R.sub.5 and R.sub.6 and R.sub.7 and R.sub.8, together with the carbon atom to which they are attached, also represent cycloalkyl. The polyamides are derived in their structure from 100 to 25 mol % of terephthalic acid and from isophthalic acid. The polyamides may contain only up to 75 mol % of structural elements of the formula II. They are suitable for the manufacture of transparent moulded articles.Type: GrantFiled: October 26, 1978Date of Patent: July 1, 1980Assignee: Ciba-Geigy CorporationInventors: Josef Pfeifer, Heinz Peter
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Patent number: 4210742Abstract: The transparent polyamides of the invention have a reduced specific viscosity of at least 0.4 dl/g (0.5% solution of the polyamide in m-cresol at 25.degree. C.) and consist either of(a) recurring structural units of the formula (I) ##STR1## wherein the carbonyl groups are in the 1,3- or 1,4-position to one another (the proportion of carbonyl groups in the 1,3-position being 30 to 100%) and each of R.sub.1 and R.sub.2 is methyl or R.sub.1 and R.sub.2 together with the carbon atom to which they are attached are cycloalkyl of 4 to 6 carbon atoms, or of(b) recurring structural units of the formula (II) ##STR2## wherein the carbonyl groups are in the 1,3- or 1,4-position to one another (the proportion of carbonyl groups in the 1,3-position being 30 to 50%) and R.sub.3 and R.sub.Type: GrantFiled: October 26, 1978Date of Patent: July 1, 1980Assignee: Ciba-Geigy CorporationInventors: Josef Pfeifer, Heinz Peter
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Patent number: 4205159Abstract: A transparent polyamide which is the polycondensation product of bis-(4-aminocyclohexyl)-methane and a mixture of azelaic acid and at least one acid selected from group consisting of isophthalic acid and adipic acid. Up to 30 mol % of said bis-(4-aminocyclohexyl)-methane may also be replaced with hexamethylene diamine or another C.sub.8 -C.sub.15 cycloaliphatic diamine. Said transparent polyamide is useful for the production of sheets, films, plates, tubes, rods and containers of various types by extruding or molding.Type: GrantFiled: July 17, 1978Date of Patent: May 27, 1980Assignee: Bayer AktiengesellschaftInventors: Rolf-Volker Meyer, Rolf Dhein, Friedrich Fahnler
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Patent number: 4202961Abstract: The transparent polyamides according to the invention are obtained by polycondensation of mixtures of terephthalic acid, or of an amide-forming derivative thereof, and a diamine of the formula I ##STR1## in which R.sub.1 and R.sub.2 are each cycloalkyl which has 4-12 C atoms and which can be substituted by alkyl,(a) with for example 10 to 20% by weight of .epsilon.-aminocaproic acid or caprolactam, or(b) with for example 10 to 20% by weight of an essentially stoichiometric mixture of adipic acid and hexamethylenediamine or of the AH salt.The polycondensation reaction is performed by known methods, preferably by melt condensation. The resulting polyamides are transparent and are resistant to boiling. They show only a slight absorption of water and are stable to hydrolysis. They can be processed for example by the injection-moulding process and by extrusion into the form of moulded articles.Type: GrantFiled: October 26, 1978Date of Patent: May 13, 1980Assignee: Ciba-Geigy CorporationInventor: Josef Pfeifer
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Patent number: 4195164Abstract: Transparent copolyamides obtained by polycondensation of mixtures of positional isomeric diaminodicyclohexyl methanes and optionally further diamines and azelaic acid and optionally isophthalic and/or adipic acid. The copolyamides are valuable moulding compounds for the manufacture of various products such as sheets, films, plates, tubes, rods and containers.Type: GrantFiled: July 17, 1978Date of Patent: March 25, 1980Assignee: Bayer AktiengesellschaftInventors: Rolf-Volker Meyer, Rolf Dhein, Friedrich Fahnler
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Patent number: 4195165Abstract: The polyamides according to the invention are mainly transparent (amorphous), but in some cases also partially crystalline. They have a reduced specific viscosity (0.5% in m-cresol at 25.degree. C.) of at least 0.3 dl/g, and consist of recurring structural elements of the formula I ##STR1## in which R.sub.1 and R.sub.2 are monovalent aliphatic or cycloaliphatic radicals, and Z is a bivalent aliphatic radical. The dicarboxylic acid structural radicals are derived in particular from adipic acid. The polyamides have high glass transition temperatures, and have a low water absorption and also good stability to hydrolysis. They can be processed into moulded articles (for example by the injection moulding process and extrusion process).Type: GrantFiled: October 26, 1978Date of Patent: March 25, 1980Assignee: Ciba-Geigy CorporationInventors: Josef Pfeifer, Heinz Peter
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Patent number: 4153784Abstract: Nylon copolymer containing piperazine and a process for finishing leather and imitation leather, having a surface of polyurethane or plasticized PVC, by applying a solution of this nylon copolymer and drying it. The overall properties of the finish are better then those of conventional finishes.Type: GrantFiled: June 27, 1977Date of Patent: May 8, 1979Assignee: BASF AktiengesellschaftInventors: Peter Horn, Franz Leppmeier, Guenter Eckert, Karl Fischer
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Patent number: 4124652Abstract: A thermoplastic molding composition comprising a chlorine containing bisphenol polycarbonate and a polyester derived from a cyclohexanedimethanol.Type: GrantFiled: December 14, 1976Date of Patent: November 7, 1978Assignee: General Electric CompanyInventors: Clayton B. Quinn, John A. Rock
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Patent number: 4118374Abstract: Aromatic polyamides having high polymerization degree are produced by polycondensing an arylene containing aminocarboxylic acid, or a dicarboxylic acid with an aromatic diamine in the presence of a phosphorus compound, a tertiary amine and a metal halide using N-methylpyrrolidone and/or dimethylacetamide as a solvent.Type: GrantFiled: May 27, 1977Date of Patent: October 3, 1978Assignee: Sumitomo Chemical Company, LimitedInventors: Noboru Yamazaki, Fukuji Higashi
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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