Patent ID: 6958374

Claim:
Semiaromatic semi-crystalline thermoplastic polyamide moulding materials comprising at least three of the following components (A), (B), (C) as polyamide matrix: (A) 42 to 98 wt.-% of a semi-crystalline copolyamide formed by (a 1 ) 47 to 90 wt.-% of units derived from adipic acid in combination with hexamethylene diamine in approximate equimolar ratio or from caproplactam and/or from ω-amino acids having 6 C atoms, (a 2 ) 50 to 7 wt.-% of units derived from isophthalic acid in combination with hexamethylene diamine in approximate equimolar ratio, (a 3 ) 40 to 3 wt.-% of units derived from terephthalic acid in combination with hexamethylene diamine in a approximate equimolar ratio, wherein the weight percentage of the components (a 1 ) to (a 3 ) add up all together to 100%; (B)9 to 1 wt.-% of prepolymeric polyamides having a solution viscosity (ηrel.) of 1.01-1.30, as measured in 0.5% m-cresol, formed by (b 1 ) 40 to 90 wt.-% of units derived from terephthalic acid in combination with hexamethylene diamine in approximate equimolar ratio, (b 2 ) 50 to 10 wt.-% of units derived from isophthalic acid in combination with hexamethylene diamine in approximate equimolar ratio, (b 3 ) 0 to 50 wt.-% of units derived from adipic acid in combination with hexamethylene diamine in approximate equimolar ratio, from caproplactam, or from ω-amino acids having 6 C atoms, wherein the weight percentage of the components (b 1 ) to (b 3 ) add up all together 100%; (C) 49 to 1 wt.-% of an amorphous copolyamide formed by (c 1 ) 40 to 90 wt.-% of units derived from isophthalic acid in combination with hexamethylene diamine in equimolar ratio, (c 2 ) 50 to 10 wt.-% of units derived from terephthalic acid in combination with hexamethylene diamine in equimolar ratio, (C 3 ) 0 to 50 wt.-% of units derived from adipic acid in combination with hexamethylene diamine in approximate equimolar ratio, from caproplactam, or from ω-amino acids having 6 C atoms, wherein the weight percentage of the components (c 1 ) to (c 3 ) add up all together 100%; and wherein further additives (D), (E) and (F) can be comprised in the moulding materials: (D)0 to 70 wt.-% of a fibrous, particle type filling material, or reinforcing material or mixtures thereof, (E) 0 to 6 wt.-% of carbon black, (F) 0 to 30 wt.-% of usual additives and processing aid agents, wherein the weight percentages of the components (A) to (F) add up all together 100%.