Patent ID: 8859662
Filing Date: 2014-10-14
Classification: C08K

Abstract:
1. A polyamide moulding material based on semicrystalline polyamides for production of LED housings or housing components with high strength, high long-term reflectivity and low blistering tendency, consisting of (A) 40 to 68% by weight of at least one semiaromatic polyamide based on at least 70 mol % of aromatic dicarboxylic acids and (B) 15-25% by weight of titanium dioxide particles, (C) 7-17% by weight of glass fibres which have a round or noncircular cross-sectional area, or a mixture of such glass fibres, and (D) 10-25% by weight of calcium carbonate, B)+(C)+D)=20 to 60% by weight, weight ratio of (C)/(D) is in the range from 0.3 to 1.5, and where the polyamide moulding material optionally comprises customary additives (E) in addition to components (A) to (D), and where the amount thereof is in addition to the sum of components (A) to (D).