| 摘要 |
<p>1,172,428. Polyamide films. DR. PLATE G.m.b.H. 13 April, 1967 [22 April, 1966], No. 16969/67. Heading C3R. Highly transparent tubular films are made from copolyamides of lauric lactam with one or more additional polyamide forming materials. Preferred copolymers contain 90-99.9% by wt. of lauric lactam with from 0.1 to 10% of other polyamide starting materials, especially caprolactam and/or an approximately molar mixture or salt of adipic acid and hexamethylene diamine.</p> |
