Polyacetal composition with improved toughness

Details Polyacetal composition with improved toughness Polyacetal composition with improved toughness

C - Chemistry, Metallurgy

08

L

C08L 59/00 (2006.01)

Patent

CA 2305743

To provide a polyacetal composition with improved toughness, wear resistance, and flowability. The polyacetal composition contains 100 wt.% of polyacetal and 0.5-5 wt.% of a block copolymer, which has its central portion made of an amorphous polymer that forms an elastic domain at room temperature and which has polyethylene glycol chains with molecular weight of 2000 or higher at its two ends.

L'invention concerne une composition de polyacétal présentant une dureté améliorée ainsi qu'une meilleure résistance à l'usure et une fluence supérieure. Cette composition de polyacétal comprend 100 % en poids de polyacétal et 0,5 à 5 % en poids d'un copolymère bloc dont la partie centrale se compose d'un polymère amorphe formant un domaine élastique à température ambiante et qui possède des chaînes de polyéthylène glycole avec un poids moléculaire de 2000 ou plus au niveau de ses deux extrémités.

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