| 发明名称 |
Preparation of polyolefin foams |
| 摘要 |
Polyolefin foams which have a density of from 30 to 300 g/l, do not exhibit after-shrinkage and possess taut cells are prepared by letting down a polyolefin/blowing agent gel, the latter first being let down to 0.1-10 bar gage pressure and the foam being kept at this pressure until it has cooled to at least 20 DEG C. below the expansion temperature.
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| 申请公布号 |
US4894191(A) |
申请公布日期 |
1990.01.16 |
| 申请号 |
US19880164491 |
申请日期 |
1988.03.04 |
| 申请人 |
BASF AKTIENGESELLSCHAFT |
发明人 |
TATZEL, HERMANN;ZUERN, LUDWIG;ZETTLER, HANS D.;SCHNEIDER, WOLFGANG;DEMBEK, GERHARD |
| 分类号 |
B29C44/00;B29C44/34;B29C44/50;B29K23/00;C08J9/22;C08J9/228 |
主分类号 |
B29C44/00 |
| 代理机构 |
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代理人 |
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| 主权项 |
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| 地址 |
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