Copolymers and terpolymers and polyamide-polyesters

Abstract

Abstract Polyamide copolymers are prepared from alpha-beta ethylenically unsaturated monocarboxylic acids which are reacted with aziridine or derivatives thereof in the presence of a non-polar solvent. The polymers may be alternatively prepared from the half ester derivative of a dicarboxylic acid having alpha-beta ethylenic unsaturation. A continuous process for the preparation of the polyamide copolymers utilizes an anhydride of a dicarboxylic acid possessing ethylenic unsaturation between the alpha- and beta carbons. Continuous process produced polyamine-polyester polymers are made by combining the reactants as described above with the reactants required for the direct esterification of a polyester on a continuous basis namely, an alkylene oxide and an alkyl or aryl dicarboxylic acid anhydride, the reaction taking place in a heated closed zone on a continuous operation basis wherein the polyamide polyester product is formed continuously without the production of the usual water of esterification. The halogenated polymers are useful as fire retardant additives in normally combustable plastics, fire retardant and anti-static agents for films and fibers such as polyesters and polyamides, and the unsaturated polymers are useful as intermediates which can be crosslinked with vinyl monomers such as styrene.

Inventors

• 👤 Sung Ki Lee

Bibliographic Details