Amoco Corporation

Standard Oil Company (indiana)

Larry W Autry

Wassily W Poppe

Yu-Tsai Chen

David P Sinclair

Jon J Harper

Joel Albert Richardson

Stephen P Brugge

A method is disclosed for producing purified 5-t-butylisophthalic acid by the liquid-phase oxidation of 5-t-butyl-m-xylene in a solvent and in the presence of a catalyst comprising cobalt, manganese and bromine components.

Method for producing 5-t-butylisophthalic acid

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

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Lisle, IL, United States of America

Larry W Autry