发明名称 |
Copolymers of ethylene and their use in the preparation of foamable plastics |
摘要 |
A foamable copolymer comprising 40 to 98 percent by weight units of ethylene, 1 to 30 weight percent units of vinyl alcohol, 1 to 30 weight percent units of acrylic acid ester of a secondary or tertiary alcohol, and up to 2 percent by weight of vinyl acetate units is described together with a process for the manufacture thereof. The same is useful in the formation of a foamed mass which is relatively highly cross-linked. The copolymer can be foamed to form a foam by heating the same at 250 DEG to 350 DEG C. for 5 to 60 minutes in the absence of oxygen.
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申请公布号 |
US4246357(A) |
申请公布日期 |
1981.01.20 |
申请号 |
US19790055880 |
申请日期 |
1979.07.09 |
申请人 |
RUHRCHEMIE AKTIENGESELLSCHAFT |
发明人 |
HOBES, JOHN V.;PAYER, WOLFGANG |
分类号 |
C08F8/00;C08F8/12;C08F210/02;C08J9/02;(IPC1-7):C08J9/02 |
主分类号 |
C08F8/00 |
代理机构 |
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