Amoco Corporation

Standard Oil Company (indiana)

The Standard Oil Company

Yu-Tsai Chen

Wassily W Poppe

David P Sinclair

Edward E Paschke

Larry W Autry

Joel Albert Richardson

M Jamal El-Hibri

A method for improving the processability of a crystalline polyphthalamide having high heat deflection temperature when filled with glass fibers by compounding with an amount of a polyarylene sulfide sufficient to reduce melt viscosity.

Method for improving the processabilty of polyphthalamides

Polymer blends comprise a crystalline polyphthalamide component having high heat deflection temperature when filled with glass fibers and a polyarylene sulfide component.

Polyamide-polyarlene sulfide blends

Fiber- or particulate-filled polyphthalamide molding compositions, wherein the polyphthalamide comprises recurring units obtainable from terephthalic acid, 2,6-naphthalene dicarboxylic acid, aliphatic diamine and, optionally, isophthalic acid, exhibit a desirable combination of thermal, mechanical and solvent resistance properties.

Filled molding composition comprising polyamide having terephthalamide

Polyphthalamides having a useful combination of thermal and mechanical properties and excellent solvent resistance, particularly to alcohols, comprise recurring aliphatic terephthalamide and 2,6-naphthalene dicarboxylamide units and, optionally, isophthalamide units.

Crystallizable copolyamide having terephthalamide and naphthalamide units

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.

Composition comprising crystallizable polyamide from terephthalic acid,

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.

Filled composition comprising crystalline copolyamide from terephthalic

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.

Crystalline copolyamide from terephthalic acid, isophthalic acid and C.sub.

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.

Crystalline polyamide composition from dicarboxylic acid mixture and

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.

Crystalline copolyamides from terephthalic acid and hexamethylenediamine

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.

Polyamide compositions from mixtures of trimethylhexamethylene diamine,

Method for preparing molded articles comprising injection molding at high compression ratios polymers having a spiral flow of at least about 4 inches at 600.degree. F. and 20,950 psi. and prepared from at least one aromatic tricarboxylic acid derivative and at least one aromatic diprimary diamine. Also disclosed are filled molding compositions containing such polymers and a method for preparing molded articles therefrom.

Injection molding of amic acid and amide-imide polymers and molding

Process for heat treating a shaped article of polyamide-imide or polyamic acid comprising preheating the article to remove a major portion of volatiles contained in the article and generated therein and to increase the polymer's deflection temperature by about 15 to about 35.degree. F. without deformation of the article, and heating the article at about 5.degree. to about 25.degree. F. below the increased deflection temperature to progressively increase the polymer's deflection temperature to substantially its maximum attainable value without deformation, said preheating and heating being carried out in the presence of a circulating gas.

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Glen Ellyn, IL, United States of America

Yu-Tsai Chen