COPOLYMERS WITH AMORPHOUS POLYAMIDE SEGMENTS

• Main Authors: HARRIS, WILLIAM, J, WHITE, JERRY, E
• Format: Patent
• Language: English; French
• Published: 11.03.2010
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP

The invention, in one aspect, is a copolymer comprising amorphous polyamide hard segments, which contain l-methyl-2,4-phenylene, l-methyl-2,6-phenylene, or mixtures thereof structure units. The structure characteristics of l-methyl-2,4-phenylene, l-methyl-2,6-phenylene, or mixtures thereof render the hard segments having glass transition temperatures below 200 0C while maintaining physical properties required for making molded articles. L'invention concerne, sous l'un de ses aspects, un copolymère comprenant des segments durs de polyamide amorphe, qui contiennent des unités de structure de l-méthyl-2,4-phénylène, de l-méthyl-2,6-phénylène ou de mélanges de ceux-ci. Les caractéristiques de structure de l-méthyl-2,4-phénylène, de l-méthyl-2,6-phénylène ou des mélanges de ceux-ci rendent les segments durs ayant des températures de transition vitreuses au-dessous de 200°C tout en conservant des propriétés physiques requises pour fabriquer des articles moulés.