Patent ID: 9263171
Filing Date: 2016-02-16
CPC Classification: C08J,C08K,C08L,D01F,D04H,H01B,Y10T

Claim Text:
1. A polyester matrix powder containing a homogeneously dispersed carbon nanotube powder, comprising: A) 80 to 99.5 wt. % of a polyester polymeric matrix based on a polybutylene terephthalate (PBT) or the copolymer thereof, based on the weight of polyester matrix powder, B) 1 to 15 wt. % of a carbon nanotube powder milled at ultrahigh speed, based on the weight of polyester matrix powder, C) 0.01 to 6.0 wt. % of a dispersant, based on the weight of polyester matrix powder, D) 0.01 to 6.0 wt. % of a chain extender, based on the weight of polyester matrix powder; wherein components A), B), C) and D) are mixed by means of a high-speed powder mixer to obtain a polyester matrix powder; wherein the chain extender is selected from the group consisting of a diisocyanatocycloalkane and an oxazoline; wherein the oxazoline is selected from the group consisting of a diisocyanatocyclohexane, a bis-oxazoline, 1,4-phenylene bis-oxazoline, 2,2′-methylene[(4,s)-4-tert-butyle-2-oxazoline] and 2,2′-methylene[(4,s)-4-phenyl-2-oxazoline].