Reactant Contains Three Carbon Atoms Directly Bonded To A Single Carbon Atom Patents (Class 528/349)
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Patent number: 5270437Abstract: Polymers of aromatic diacids and 2-methylpentamethylenediamine are prepared in the presence of formic acid. The formic acid reduces the tendency of the 2-methylpentamethylenediamine to cyclize.Type: GrantFiled: November 13, 1992Date of Patent: December 14, 1993Assignee: E. I. Du Pont de Nemours and CompanyInventor: David N. Marks
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Patent number: 5264544Abstract: Amorphous polyamide compositions are provided which are transparent and have improved glass transition and thermal decomposition temperatures. The polyamide compositions of the present invention can be prepared as the polymeric condensation product of a diamine component comprising neopentyldiamine, and a diacid component comprising an aromatic dicarboxylic acid.Type: GrantFiled: July 15, 1992Date of Patent: November 23, 1993Assignee: Amoco CorporationInventors: Edward E. Paschke, Wassily Poppe, David P. Sinclair
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Patent number: 5235029Abstract: There are described copolyamides which are soluble in organic polyamide solvents and contain recurring structural units of the formulae Ia, Ib, Ic and Id or Ia, Ib, Id and Ig or Ia, Ib, Ic, Id and Ig and optionally of the formulae Ie and/or If--OC--Ar.sup.1 --CO-- (Ia),--NH--Ar.sup.2 --NH-- (Ib),--NH--Ar.sup.3 --NH-- (Ic), ##STR1##--OC--R.sup.2 --CO-- (Ie),--NH--R.sup.3 --NH-- (If),--OC--Ar.sup.4 --CO-- (Ig),whereAr.sup.1 and Ar.sup.2 are each independently of the other divalent aromatic radicals whose valence bonds are in the para or a comparable coaxial or parallel position relative to one another,Ar.sup.3 and Ar.sup.4 are each independently of the other divalent radicals whose valence bonds are in the meta or a comparable kinked position relative to one another,R.sup.1 is lower alkyl, lower alkoxy or halogen, andR.sup.2 and R.sup.3 are each independently of the other divalent aliphatic, cycloaliphatic or araliphatic radicals.Type: GrantFiled: January 16, 1992Date of Patent: August 10, 1993Assignee: Hoechst AGInventors: Gunter Keil, Karl Heinrich
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Patent number: 5196501Abstract: Preparation of specially substituted aromatic polyamides containing structural units of the formula I mentioned and copolyamides containing at least 10 mol % of structural units of the formula I and structural units of the formula II mentioned and their use as orientation layer in liquid crystal display elements and/or liquid crystal switching elements.Type: GrantFiled: December 17, 1991Date of Patent: March 23, 1993Assignee: Hoechst AktiengesellschaftInventors: Hans-Rolf Dubal, Mikio Murakami, Otto Herrmann-Schonherr, Arnold Schneller
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Patent number: 5194577Abstract: Crystallizable polyphthalamides with a useful combination of thermal and mechanical properties comprising recurring moieties of terephthalic acid, adipic acid, an aliphatic diamine of 4 to 20 carbon atoms and meta-xylylene diamine.Type: GrantFiled: December 10, 1991Date of Patent: March 16, 1993Assignee: Amoco CorporationInventor: Yu-Tsai Chen
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Patent number: 5194578Abstract: A fiber-forming copolyamide consisting essentially of between about 60 and about 99.5 mole % hexamethylene adipamide units and between about 0.5 and 40 mole percent 2-methyl-pentamethylene adipamide units, the copolyamide having an RV greater than about 25, and a melting point of greater than about 220.degree. C.Type: GrantFiled: June 21, 1990Date of Patent: March 16, 1993Assignee: E.I. Du Pont de Nemours and CompanyInventor: Anthony Anton
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Patent number: 5162491Abstract: A copolyadiapamide consisting essentially of between about 60 and about 99.5 mole percent hexamethyleneadipamide units and between about 0.5 and 40 mole percent trimethylhexamethyleneadipamide units, the copolyamide having an RV greater than about 25, and a melting point of greater than about 220.degree. C.Type: GrantFiled: June 21, 1991Date of Patent: November 10, 1992Assignee: E. I. Du Pont de Nemours and CompanyInventors: James A. Hammond, Jr., David N. Marks
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Patent number: 5140097Abstract: Polyamide reaction products comprising: a dicarboxylic acid and a diamine component comprising a mixture of poly(oxytetramethylene) diamines and oligomers of said poly(oxytetramethylene) diamines,said mixture containing from about 85 to about 99.5 wt. % of said poly(oxytetramethylene) diamines and, correspondingly, from about 15 to about 0.5 wt. % of said oligomers,said poly(oxytetramethylene) diamines having the formula: ##STR1## wherein n represents 0 or a positive number having a value of 1 to about 30,said oligomers having the formula: ##STR2## wherein n represents 0 or a positive number having a value of 1 to about 30.Type: GrantFiled: November 1, 1990Date of Patent: August 18, 1992Assignee: Texaco Chemical CompanyInventors: George P. Speranza, Wei-Yang Su, Robert L. Zimmerman, Donald H. Champion
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Patent number: 5128441Abstract: A block polyamido primary amine condensation product prepared by reacting a defined polyoxyalkylene polyamine having terminal primary amine groups with an amount of a defined dicarboxylic acid or an anhydride or a C.sub.1 to C.sub.4 alkyl ester thereof, sufficient to react one mole of the dicarboxylic acid reactant with each primary amine group of the polyoxyalkylene polyamine to thereby prepare an intermediate condensation reaction product containing terminal carboxyl groups, and reacting one mole of a defined organic di-primary amine with each terminal carboxyl group of the said intermediate condensation reaction product to thereby provide, as the principal product of the reaction a block polyamido primary amine condensation product.Type: GrantFiled: May 4, 1990Date of Patent: July 7, 1992Assignee: Texaco Chemical CompanyInventors: George P. Speranza, Jiang-Jen Lin
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Patent number: 5128442Abstract: A process for the preparation of a linear polyamide by reacting the appropriate dicarboxylic acid and diamine in a liquid reaction medium with the addition of a catalytically effective phosphorus compound, removing the reaction medium to give a solid salt, precondensing the latter in the solid phase at a temperature of from 140.degree. C. to 5.degree. C. below the melting point of the salt and continuing condensation at a temperature above that used for the precondensation until the desired degree of condensation is reached.Type: GrantFiled: April 8, 1991Date of Patent: July 7, 1992Assignee: BASF AktiengesellschaftInventors: Gunter Pipper, Wolfgang F. Mueller, Harald Dauns
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Patent number: 5112685Abstract: Poly(2-methyl-1,5-pentylene) terephthalamide is discussed herein. It is manufactured in a process starting with a nylon salt made from terephthalic acid and 2-methyl-1,5-pentylene diamine and an excess amount of the diamine. The polymer is spun to form monofilaments. The monofilaments may be used, among other things, to form dryer screens for use in a paper forming process.Type: GrantFiled: February 11, 1991Date of Patent: May 12, 1992Assignee: Hoechst Celanese CorporationInventors: Robert B. Rashbrook, Clyde W. Alexander, Edward C. Bland
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Patent number: 5109106Abstract: Amorphous or semicrystalline semi-aromatic copolyamides are prepared, with significantly reduced loss of amino reactant, by polycondensing an acidic monomer which includes at least one aromatic dicarboxylic acid having from 8 to 18 carbon atoms with an amino comonomer consisting essentially of an alkylpentamethylenediamine, or salt thereof, wherein said polycondensation is carried out in a closed reaction zone.Type: GrantFiled: February 21, 1990Date of Patent: April 28, 1992Assignee: Rhone-Poulenc ChimieInventors: Pierre-Yves Lahary, Serge Roy
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Patent number: 5089600Abstract: Copolymers comprising amide units and urea units are prepared by melt phase interchange of diaryl esters of dicarboxylic acids with diamines and diesters of carbonic acid with diamines. The products are tough resins, useful per se as molding compounds, or in blends with other thermoplastic polymers.Type: GrantFiled: August 16, 1989Date of Patent: February 18, 1992Assignee: General Electric CompanyInventors: Kenneth P. Blackmon, Donald C. Clagett, Daniel W. Fox, Louis M. Maresca, Sheldon J. Shafer
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Patent number: 5081223Abstract: Amorphous polyamide compositions are provided which are transparent and have improved glass transition and thermal decomposition temperatures. The polyamide compositions of the present invention can be prepared as the polymeric condensation product of a diamine component comprising neopentyldiamine, and a diacid component comprising an aromatic dicarboxylic acid.Type: GrantFiled: February 27, 1990Date of Patent: January 14, 1992Assignee: Amoco CorporationInventors: Edward E. Paschke, Wassily Poppe, David P. Sinclair
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Patent number: 5077377Abstract: A process is provided for the production of a novel melt-processible aromatic polyamide having a Tg >150.degree. C.Type: GrantFiled: August 29, 1990Date of Patent: December 31, 1991Assignee: E. I. du Pont de Nemours and CompanyInventor: Wilfred Sweeny
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Patent number: 5032620Abstract: Foamed particles of a propylene resin are described which comprises, as a base resin, a random copolymer of propylene and 1-butene, said random copolymer having a 1-butene content of from 3 to 12% by weight.A foamed mold article is also described which is composed of a random copolymer of propylene and 1-butene, and having a density of from 0.015 to 0.09 g/cm.sup.3.A bumper core material for use in automobile bumpers is also described which is composed of a foamed mold article of a random copolymer of propylene and 1-butene, said random copolymer having a 1-butene content of from 3 to 12% by weight, said foamed mold article having a density of from 0.02 to 0.08 g/cm.sup.3, a compression stress at 50% compression as measured at 20.degree. C. of 2.5 to 10 kg/cm.sup.2, and an energy absorption efficiency as measured at 20.degree. C. of 60 to 90%, the ratio (E.sub.80 /E.sub.20) of the amount of the energy absorption of said foamed mold article as measured at 80.degree. C. (E.sub.Type: GrantFiled: December 6, 1989Date of Patent: July 16, 1991Assignee: Mitsubishi Yuka Badische Co., Ltd.Inventors: Masakazu Arai, Hiroshi Endo, Toshihiro Gotoh, Toshio Yagi, Masanori Tanaka, Masanori Saito, Shigeki Mathuno
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Patent number: 5015726Abstract: An amorphous polyamide having a high heat distortion temperature is produced by reacting toluenediamine with isophthalic acid, and optionally terephthalic acid, in the presence of either an aliphatic diacid, an aliphatic diamine or a mixture thereof. The polyamide provides the combined properties of a high heat distortion temperature, low shrinkage upon cooling, high levels of chemical resistance, is processable at temperatures below its degradation temperature, and has a high flexural modulus. With these combined properties the polyamide is particularly suitable for fiber reinforced automotive applications requiring exposure to excessive heat in conventional automotive paint bake ovens.Type: GrantFiled: May 25, 1990Date of Patent: May 14, 1991Assignee: General Electric CompanyInventors: Edward N. Peters, Geoffrey H. Riding, G. F. Willard
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Patent number: 5010168Abstract: Copolyamides are described comprising: (1) 0.22-0.28 mole fraction units derived from terephthalic acid; (2) 0.2-0.28 mole fraction units derived from paraphenylene diamine; (3) 0.22-0.28 mole fraction units derived from isophthalic acid; and (4) 0.22-0.28 mole fraction units derived from a 3,3'- or 4,4'-diamine of diphenyl methane, diphenylpropane-2,2, diphenyl cyclohexane-1,1, diphenyl ether, diphenyl sulfide, diphenyl sulphone, or benzophenone.Type: GrantFiled: December 8, 1989Date of Patent: April 23, 1991Assignee: Akzo nvInventor: Doetze J. Sikkema
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Patent number: 5006629Abstract: A wholly aromatic polyamide copolymer having excellent heat, flame and chemical resistances, solubility in organic solvents and shaping property and useful for shaped article having a high mechanical strength and modulus of elasticity, comprising the repeating units of the formulae: ##STR1## and at least one member selected from ##STR2## wherein X=a halogen atom, n, or m=1 to 4 and n+m=1 to 8.Type: GrantFiled: October 30, 1989Date of Patent: April 9, 1991Assignee: Teijin LimitedInventors: Toshihiro Santa, Tsutomu Kiriyama
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Patent number: 5003035Abstract: There are provided para-ordered aromatic heterocyclic copolymers having repeating groups of the following formulas: ##STR1## wherein a, b, c, d, and e are positive integers, each representing an average number of the respective different recurring units present in the repeating group, m and n are 1 or 2, R and R' are alkyl groups having 1 to 4 carbon atoms, and Q is a benzobisazole group of the formula: ##STR2## wherein Y is --O--, --S--, or --NH--. In the copolymers wherein m or n is 2, the R or R' groups can be the same or different. In copolymer I, the ratio a:b can be about 1:1 to 99:1. In copolymer II, the ratio c:(d+e) can be about 1:1 to 99:1, and the ratio d:e can be aobut 1:99 to 99:1.Type: GrantFiled: July 13, 1989Date of Patent: March 26, 1991Assignee: The United States of America as represented by the Secretary of the Air ForceInventors: Tsu-Tzu Tsai, Fred E. Arnold
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Patent number: 5003037Abstract: Soluble, film-forming, polyamides, polyimides, and polyamide-imides and their copolymers made using 3,5-diamino-t-butylbenzene are described. These polymers have some solubility in organic solvents such as N-methylpyrrolidone, a high Tg, excellent thermal stability, lower density and lower moisture uptake and are useful in films, fibers and composites, and in the electronics industry as electrical component substrates, protective coatings, interlevel dielectrics and the like.Type: GrantFiled: August 3, 1990Date of Patent: March 26, 1991Assignee: Amoco CorporationInventors: David J. Fenoglio, Douglas E. Fjare, Edwin F. Morello, Neal B. Nowicki
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Patent number: 5001217Abstract: There are provided crosslinkable, para-ordered aromatic heterocyclic polymers having repeating groups of the following formula ##STR1## wherein Y is --O--, --S--, or --NH--, n is 1 or 2, and R is an alkyl group having 1 to 4 carbon atoms. In polymers having two pendant R groups, the R groups can be the same or different.Type: GrantFiled: July 13, 1989Date of Patent: March 19, 1991Assignee: The United States of America as represented by the Secretary of the Air ForceInventors: Tsu-Tzu Tsai, Fred E. Arnold
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Patent number: 4992527Abstract: Resinous condensation polymers of polycarboxylic acid compounds and aromatic diprimary amines comprising diamino-t-butylbenzenes are described. In particular, film-forming polyamides, polyimides and polyamide-imides and their copolymers made using diamino-t-butylbenzenes which have amino groups meta or para to each other on a benzene ring are described. These polymers have some solubility in organic solvents such as N-methylpyrrolidone, a high glass transition temperature, excellent thermal stability, and are useful in films, fibers and composites, and in the electronics industry as electrical component substrates, protective coatings, interlevel dielectrics and the like.Type: GrantFiled: July 23, 1990Date of Patent: February 12, 1991Assignee: Amoco CorporationInventors: David J. Fenoglio, Douglas E. Fjare, John L. Melquist, Edwin F. Morello, Neal R. Nowicki
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Patent number: 4973660Abstract: Resinous condensation polymers of polycarboxylic acid compounds and aromatic diprimary amines comprising diamino-t-butyltoluene are described. In particular, film-forming polyamides, polyimides and polyamide-imides and their copolymers made using diamino-t-butyltoluene which have amino groups meta or para to each other on a benzene ring are described. These polymers have some solubility in organic solvents such as N-methylpyrrolidone, a high glass transition temperature, excellent thermal stability, and are useful in films, fibers and composites, and in the electronics industry as electrical component substrates, protective coatings, interlevel dielectrics and the like.Type: GrantFiled: November 30, 1988Date of Patent: November 27, 1990Assignee: Amoco CorporationInventors: David J. Fenoglio, Douglas E. Fjare, John L. Melquist
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Patent number: 4973659Abstract: Resinous condensation polymers of polycarboxylic acid compounds and aromatic diprimary amines comprising diamino-t-butylbenzenes are described. In particular, film-forming polyamides, polyimides and polyamide-imides and their copolymers made using diamono-t-butylbenzenes which have amino groups meta or para to each other on a benzene ring are described. These polymers have some solubility in organic solvents such as N-methylpyrrolidone, a high glass transition temperature, excellent thermal stability, and are useful in films, fibers and composites, and in the electronics industry as electrical component substrates, protective coatings, interlevel dielectrics and the like.Type: GrantFiled: November 30, 1988Date of Patent: November 27, 1990Assignee: Amoco CorporationInventors: David J. Fenoglio, Douglas E. Fjare, John L. Melquist, Edwin F. Morello, Neal R. Nowicki
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Patent number: 4963646Abstract: Amorphous (co)polyamides are polycondensed from aromatic dicarboxylic acid(s), e.g., isophthalic acid and/or terephthalic acid, and from aliphatic diamine(s), e.g., hexamethylenediamine, by preparing two unbalanced prepolymers of low viscosity, one containing excess COOH endgroups and the other containing excess NH.sub.2 endgroups, and then, in a second stage, the two unbalanced prepolymers are mixed in given proportions and their postcondensation is carried out in the molten state in a vented extruder including one or more screws; the amorphous (co)polyamides thus prepared are perfectly transparent and can be easily injection molded into useful shaped articles endowed with good properties, especially in respect of multiaxial impact.Type: GrantFiled: October 13, 1989Date of Patent: October 16, 1990Assignee: Rhone-Poulenc ChimieInventors: Genevieve Galland, Jean Coquard
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Patent number: 4959446Abstract: Polyamide resins useful for forming containers having improved resistance to gas permeability comprising the reaction product of(A) a dicarboxylic acid corresponding to the structure ##STR1## wherein X is hydrogen or unsubstituted alkyl containing 1-5 carbons and n is an integer in the range of 4 to 10, and(B) a diamine containing 5 to 16 carbon atoms.Type: GrantFiled: May 26, 1989Date of Patent: September 25, 1990Assignee: Eastman Kodak CompanyInventors: Burns Davis, deceased, Theodore R. Walker, Jr.
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Patent number: 4946933Abstract: Novel thermoplastic adhesive components prepared from polyoxyethylene diamines, dimer acids and dicarboxylic acids having a wide range of predictable softening points depending upon the molar ratio of the components. Especially interesting products are synthesized employing JEFFAMINE.RTM. EDR-148 and JEFFAMINE.RTM. EDR-192 produced by Texaco Chemical Co. The adhesives can be used as self adhesive materials or as tackifiers for other adhesives.Type: GrantFiled: February 27, 1989Date of Patent: August 7, 1990Assignee: Texaco Chemical CompanyInventors: George P. Speranza, Wei-Yang Su
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Patent number: 4946934Abstract: Soluble, film-forming, polyamides, polyimides, and polyamide-imides and their copolymers made using 3,5-diamino-t-butylbenzene are described. These polymers have some solubility in organic solvents such as N-methylpyrrolidone, a high Tg, excellent thermal stability, lower density and lower moisture uptake and are useful in films, fibers and composites, and in the electronics industry as electrical component substrates, protective coatings, interlevel dielectrics and the like.Type: GrantFiled: June 28, 1988Date of Patent: August 7, 1990Assignee: Amoco CorporationInventors: David J. Fenoglio, Douglas E. Fjare, Edwin F. Morello, Neal R. Nowicki
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Patent number: 4937315Abstract: Amorphous and transparent copolyamides having glass transition temperatures, Tg, greater than 140.degree. C. and improved thermomechanical properties, well adopted for the production of a wide variety of useful shaped articles, contain specified amounts of terephthalic acid, 2-methylpentamethylenediamine and hindered aromatic diamine recurring structural units.Type: GrantFiled: June 15, 1989Date of Patent: June 26, 1990Assignee: Rhone-Poulenc ChimieInventor: Pascal Barthelemy
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Patent number: 4937322Abstract: Crystallized semiaromatic copolyamides having glass transition temperatures, Tg, greater than 142.degree. C., melting points, Tm, less than 290.degree. C. and improved thermomechanical properties, well adopted for the production of a wide variety of useful shaped articles, contain specified amounts of terephthalic acid, 2-methylpentamethylenediamine and hindered aromatic diamine recurring structural units.Type: GrantFiled: June 15, 1989Date of Patent: June 26, 1990Assignee: Rhone-Poulenc ChimieInventor: Pascal Barthelemy
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Patent number: 4921933Abstract: Aromatic polyamide having good high-temperature resistance and processing ability is obtained by specifying the ratio of storage modulus at the glass transition temperature (Tg).degree.C. to that of (Tg+100).degree.C.Type: GrantFiled: May 27, 1988Date of Patent: May 1, 1990Assignee: Mitsui Toatsu Chemicals, IncorporatedInventors: Masanori Osawa, Kohei Shizuka, Masahiro Kouno, Akio Matsuyama, Hirotoshi Katsuoka, Kazumi Mizutani
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Patent number: 4914180Abstract: Polyamides having improved solubility and processing characteristics are provided having incorporated into the polymeric chain a novel aromatic diamine compound, 2-(3-aminophenyl)-2-(4-aminophenyl) hexafluoropropane (3-4'-6F Diamine). The polyamides are prepared by reacting the 3,4'-6F Diamine with an aliphatic or aromatic di-acid or acid halide. It has been found that the polyamides of this invention have improved solubility characteristics, low dielectric constants and improved thermal flow properties as a consequence of the meta/para positioning of the amino groups on the daimine, which renders these polymers more readily melt spinnable for the production of fibers. The polymers may also be compression molded and fabricated into composites at moderate temperatures and pressures.Type: GrantFiled: September 30, 1988Date of Patent: April 3, 1990Assignee: Hoechst Celanese CorporationInventor: Rohitkumar H. Vora
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Patent number: 4898896Abstract: A transparent polyamide containing terephthalic acid radicals or radicals of the mixture of terephthalic and isophthalic acids and a cycloaliphatic diamine radical and having the chain formations: ##STR1## in which: y.sub.1 +y.sub.2 is between 10 and 200 with y.sub.1 /(y.sub.1 +y.sub.2)>0.5;m, p, m' and p' are whole numbers equal to or greater than zero, such that: ##EQU1## is between 0.5 and 10, taken statistically over the marcomolecule; Z and Z' are the same or different and are either a polymethylene segment --(CH.sub.2)--.sub.Type: GrantFiled: September 26, 1988Date of Patent: February 6, 1990Assignee: AtochemInventors: Philippe Maj, Philippe Blondel, Daniel Cuzin
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Patent number: 4895928Abstract: Melt-processable polyaramide and polyarylate polymers and copolymers are made employing a component containing the 5-t-butylisophthaloyl moiety and aromatic diamines or aromatic diols. The melt processability of these polymers can eliminate expensive processing in making shaped articles. The claimed materials are useful for making fiber, film, laminates, coatings, adhesives and molded objects.Type: GrantFiled: June 17, 1988Date of Patent: January 23, 1990Assignee: Amoco CorporationInventors: David J. Fenoglio, Edward E. Paschke, James R. Stephens
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Patent number: 4885356Abstract: This invention relates to high molecular weight toluenediamine-containing polyamide resins formed by the reaction of a mixture of 2,4-toluenediamine and 2,6-toluenediamine and derivatives thereof with an aromatic diacid or precurser thereof. The resulting polyamides are amorphous, as opposed to crystalline. Because they are amorphous, they lend themselves to a wide variety of processing techniques and because of their high molecular weight, they have outstanding physical properties.The polyamides are prepared using a precondensate method wherein a mixture of the toluenediamine isomers and aromatic acid, usually in the form of the aromatic acid dihalide, is reacted at relatively low temperatures forming a precondensate and the precondensate subsequently polymerized in the presence of an acid acceptor.Type: GrantFiled: June 28, 1988Date of Patent: December 5, 1989Assignee: Air Products and Chemicals, Inc.Inventors: Barton Milligan, Roland Libers
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Patent number: 4882414Abstract: Polyamide hot-melt adhesives are prepared from condensation of a mixture of polymeric fatty acids and 1,18-octadecane-dicarboxylic acid or 1,16-hexadecanedicarboxylic acid and a substantially equivalent proportion of a polyamine.Type: GrantFiled: November 29, 1984Date of Patent: November 21, 1989Assignee: Union Camp CorporationInventor: Ronald J. Wroczynski
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Patent number: 4863991Abstract: Polyphthalamides which, when filled, have heat deflection temperatures of at least about 240.degree. C. are prepared from compounds of terephthalic acid and isophthalic acid in a ratio of about 70:30 to about 99:1 in combination with a diamine which comprises hexamethylene diamine.Type: GrantFiled: January 11, 1988Date of Patent: September 5, 1989Assignee: Amoco CorporationInventors: Wassily Poppe, Yu-Tsai Chen, Edward E. Paschke
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Patent number: 4847356Abstract: Transparent copolyamides with very good processibility, very good mechanical properties, excellent transparency and hydrolysis stability in boiling water, and alloyability with other polyamides, are obtained through polycondensation of alkyl derivatives of dicycane and additional polyamide-forming components, together with isophthalic acid and an .omega.-aminocarboxylic acid or its lactam with more than 8 C-atoms, or salts thereof, or a stoichiometric mixture of an aliphatic dicarboxylic acid and an aliphatic diamine.The copolyamides of the invention are excellently suitable for the production of molded articles, thanks to their low processing viscosity.Type: GrantFiled: September 1, 1987Date of Patent: July 11, 1989Assignee: EMS-Inventa AGInventors: Manfred Hoppe, Hans D. Torre
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Patent number: 4794158Abstract: Disclosed herein is a transparent copolyamide which comprises constitutional units derived from a diamine component comprising (a) bis(3-methyl-4-aminocyclohexyl)methane and (b) hexamethylenediamine and a dicarboxylic acid component comprising (c) isophthalic acid and (d) terephthalic acid, the molar ratio of said components simultaneously satisfying the following two formulas:(a):(b)=3:97 to 18:82(c):(d)=60:40 to 90:10and relative viscosity of said copolyamide being 1.9 to 2.5 as measured at 25.degree. C. and a concentration of 1 g/dl in 98% concentrated sulfuric acid.The transparent copolyamide according to the present invention shows a sufficient resistance to alcohols, a sufficient resistance to boiling water and high moldability, therefore, is useful as the material for molded articles such as parts in automobiles, electronic and electric appliances and machines.Type: GrantFiled: December 8, 1987Date of Patent: December 27, 1988Assignee: Mitsubishi Kasei CorporationInventors: Masayoshi Hasuo, Hiroshi Urabe, Michio Kawai, Tatsuya Ohsako
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Patent number: 4731421Abstract: Transparent copolyamides with very good processibility, very good mechanical properties, excellent transparency and hydrolysis stability in boiling water, and alloyability with other polyamides, are obtained through polycondensation of alkyl derivatives of dicycane and additional polyamide-forming components, together with isophthalic acid and an .omega.-aminocarboxylic acid or its lactam with more than 8 C-atoms, or salts thereof, or a stoichiometric mixture of an aliphatic dicarboxylic acid and an aliphatic diamine.The copolyamides of the invention are excellently suitable for the production of molded articles, thanks to their low processing viscosity.Type: GrantFiled: January 7, 1986Date of Patent: March 15, 1988Assignee: Ems-Inventa AGInventors: Manfred Hoppe, Hans D. Torre
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Patent number: 4617375Abstract: Polyamides formed from 80 to 100 mol %, relative to the polyamide, of at least one structural element of the formula I ##STR1## and 20 and 0 mol % of at least one structural element of the formulae II and/or IIa ##STR2## wherein R.sup.1 and R.sup.2 are lower alkyl, or together are alkylene, R.sup.3 is naphthylene or anthracenylene or the corresponding cycloaliphatic ring systems, R.sup.4 is alkylene, R.sup.5 is alkylene or an aromatic radical, and R.sup.6 is alkylene, cycloalkylene or a divalent araliphatic radical. The polyamides have melting points which render possible processing by thermoplastic shaping processes.Type: GrantFiled: July 16, 1985Date of Patent: October 14, 1986Assignee: Ciba-Geigy CorporationInventor: Josef Pfeifer
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Patent number: 4617342Abstract: A crystalline polyamide which has improved tensile strength and which has a heat deflection temperature in excess of 240.degree. C. when filled is formed from dicarboxylic acid compounds comprising compounds of terephthalic acid and isophthalic acid in a molar ratio of at least 80:20 to about 99:1 and diamines comprising hexamethylene diamine and trimethylhexamethylene diamine in a molar ratio of about 98:2 to about 60:40.Type: GrantFiled: May 16, 1985Date of Patent: October 14, 1986Assignee: Amoco CorporationInventors: Wassily Poppe, Yu-Tsai Chen, Edward E. Paschke
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Patent number: 4603193Abstract: A process for the manufacture of polyamides, polyamide-imides and polyimides which process comprises preparing a salt of an aliphatic or aromatic diamine or a mixture of these and di, tri or tetracarboxylic acid or mixture of these or their corresponding anhydride by reacting both feedstocks at a temperature of about 300.degree. to 500.degree. F. in a solvent medium provided the water content of the resulting solution is below 25% water by weight the resulting salt solution is subjected to a pressure of about 1500-3000 psig and is then passed through a preheat zone where the temperature is increased to about 625.degree. F., the total residence time is kept at about 25 to about 50 seconds. The reactants are flashed through a control valve or nozzle to give an aerosol mist at a pressure of about 0-400 psig, the polymerization is further carried out in a flash reactor with a high heat flux and with wall temperatures of about 600.degree. F. to about 1000.degree. F. and melt temperatures of about 500.degree. F.Type: GrantFiled: February 23, 1984Date of Patent: July 29, 1986Assignee: Amoco CorporationInventors: Joel A. Richardson, Wassily Poppe, Benjamin A. Bolton, Edward E. Paschke
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Patent number: 4603166Abstract: Novel crystalline polyamides having high heat deflection temperatures when filled are prepared from aliphatic diamines and either mixtures of terephthalic acid and adipic acid or mixtures of terephthalic acid, isophthalic acid and adipic acid. The mole ratio of aliphatic diamine to terephthalic acid, isophthalic acid, and adipic acid is in the range of about 100:65-95:25-0:35-5. The polyamides can be filled with about 10 to about 60 parts by weight of a filler. The mechanical properties of these polyamides are largely unaffected by absorbed water.Type: GrantFiled: February 8, 1985Date of Patent: July 29, 1986Assignee: Amoco CorporationInventors: Wassily Poppe, Yu-Tsai Chen, Larry W. Autry, Joel A. Richardson, David P. Sinclair
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Patent number: 4564705Abstract: Aromatic-aliphatic diamines of the formula ##STR1## in which Ar is an arylene or substituted arylene are useful in preparing thermally stable, rigid, polyamides, polyureas and polyurethanes having a repeating unit of the formula ##STR2## in which Ar is arylene or substituted arylene, X is --NH-- or --O--, n is 0 or 1, and R is a divalent organic radical.Type: GrantFiled: May 21, 1981Date of Patent: January 14, 1986Assignee: E. I. Du Pont De Nemours and CompanyInventors: August H. Frazer, John F. Harris, Jr.
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Patent number: 4495328Abstract: Crystalline copolyamides from terephthalic acid and mixtures of hexamethylenediamine and trimethylhexamethylenediamine and filled molding compositions prepared therefrom are disclosed. The injection moldable crystalline copolyamides in molded form are useful in engineering resin applications such as the hood of an automobile, a shroud for a lawn mower, chain saw guard, etc.Type: GrantFiled: April 19, 1984Date of Patent: January 22, 1985Assignee: Standard Oil Company (Indiana)Inventors: Wassily Poppe, Yu-Tsai Chen, Larry W. Autry
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Patent number: 4476280Abstract: Novel crystalline copolymers having heat deflection temperatures in excess of 305.degree. C. and prepared from hexamethylene diamine, trimethylhexamethylene diamine and either mixtures of terephthalic acid and adipic acid or mixtures of terephthalic acid, isophthalic acid and adipic acid. The high heat deflection of these polyamides enables them to be used in applications such as a hood for an automobile, a shroud for a lawn mower, chain saw guards and in electrical connection applications.Type: GrantFiled: February 16, 1983Date of Patent: October 9, 1984Assignee: Standard Oil CompanyInventors: Wassily Poppe, Yu-Tsai Chen
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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: RE34447Abstract: Novel crystalline polyamides having high heat deflection temperatures when filled are prepared from aliphatic diamines and either mixtures of terephthalic acid and adipic acid or mixtures of terephthalic acid, isophthalic acid and adipic acid. The mole ratio of aliphatic diamine to terephthalic acid, isophthalic acid, and adipic acid is in the range of about 100:65-95:25-0:35-5. The polyamides can be filled with about 10 to about 60 parts by weight of a filler. The mechanical properties of these polyamides are largely unaffected by absorbed water.Type: GrantFiled: July 21, 1988Date of Patent: November 16, 1993Assignee: Amoco CorporationInventors: Wassily Poppe, Larry W. Autry, Yu-Tsai Chen, Joel A. Richardson, David P. Sinclair