Patent ID: 7875361
Filing Date: 2011-01-25
Classification: C08L,F21V,Y10T

Abstract:
1. A method for the production of a metallically coated light-reflecting component made of a thermoplastic polymer molding compound, the metallically coated light-reflecting component being suitable for operating temperatures of 200° C. or higher than 200° C., which method comprises: (a) producing a thermoplastic polymer molding compound; (b) producing a light-reflecting component or parts thereof by a thermoplastic shaping method; and (c) coating the light-reflecting component or parts thereof with a metallic layer; wherein the thermoplastic polymer molding compound is based on a co-polyamide which consists of a colorless, amorphous and transparent PA MACMI/MACM12/PACMI/PACM12 composition having a glass transition temperature (Tg) of 221° C., said composition containing 46 mol-percent MACM and 54 mol-percent PACM and, in addition, 76 mol-percent isophthalic acid and 24 mol-percent dodecane diacid, so that the sum of the quantities of the two diamines in the composition is approximately equimolar in the reaction to the sum of the quantities of the two dicarboxylic acids, the diamines and the dicarboxylic acids each amounting to 100 mol-percent.