High-frequency-weldable polymer mixture
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United States of America Patent
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Dec 19, 2000
Grant Date -
N/A
app pub date -
Dec 22, 1997
filing date -
Dec 20, 1996
priority date (Note) -
Expired
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Abstract
High-frequency-weldable polymer mixture containing: a copolymer of ethylene with comonomers selected from vinyl esters of saturated C.sub.2 -C.sub.8 carboxylic acids, C.sub.1 -C.sub.12 -alkyl acrylates and -methacrylates, optionally with carbon monoxide as termonomer; and polyamide-containing thermoplastic polyolefin which, in turn, contains a polyamide, polyolefin and, optionally, compatibilizing agents. The polyolefins can be a propylene copolymer with polypropylene blocks and random copolymer blocks, or a mixture of polypropylene and random copolymers. The polymer mixture has good high-frequency weldability and good weld seam strength as well as thermal stability accompanied by a low temperature dependency of the dielectric loss factor.
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