Patent ID: 6162865
Filing Date: 2000-12-19
Classification: C08L

Abstract:
High-frequency-weldable polymer mixture comprising:a) approximately 1 to 80 percent by weight copolymer of ethylene with approximately 8 to 45 percent by weight comonomers selected from vinyl esters of saturated C.sub.2 -C.sub.8 carboxylic acids, optionally with C.sub.1 -C.sub.12 -alkyl acrylates, -methacrylates, and carbon monoxide as termonomer, having a melt-flow index MFI (190.degree. C.; 2.16 kg) of approximately 0. 2 to 7.0 g/10 min; andb) approximately 20 to 99 percent by weight polyamide-containing thermoplastic polyolefin with a melt-flow index MFI (230.degree. C. 2.16 kg) of approximately 0.5 to 7.0 g/10 min comprising:aa) approximately 3 to 50 percent by weight polyamide,bb) approximately 50 to 97 percent by weight polyolefin, which polyolefin (i) is a propylene copolymer of which approximately 10 to 95 percent by weight are one or more polypropylene blocks and approximately 90 to 5 percent by weight are one or more random copolymer blocks of ethylene, C.sub.3 -C.sub.12 -alphaolefin and, optionally, diene, wherein the ethylene content in the random copolymer blocks is approximately 50 to 95 percent by weight, or (ii) a mixture of a polypropylene and a copolymer of ethylene, C.sub.3 -C.sub.12 - alphaolefin and, optionally, diene, wherein the weight ratio of polypropylene to copolymer is approximately 9:1 to 1:9, or (iii) a mixture of (i) and (ii),cc) approximately 0 to 40 percent by weight compatibilizing agent, wherein the quantities of aa) to cc) add up to 100 percent by weight and are referenced to component b), and quantities a) and b) are referenced to the sum of a)+b).