发明名称 |
OBERFLAECHENVERSIEGELTE FORMKOERPER AUS ZELLIGEN POLYURETHAN-ELASTOMEREN UND VERFAHREN ZU DEREN HERSTELLUNG |
摘要 |
<p>The present invention relates to moldings, particularly in the form of cushioning elements, of at least partly open-cell polyurethane elastomers which have a substantially homogeneous density profile and a density of from 0.3 to 0.8 g/cc and which are characterized in that their surface is sealed by a continuous, tight, nonporous skin of polyurethane or polyurethane urea having a thickness of from 0.05 to 1 mm, preferably from 0.1 to 0.5 mm and, with particular preference, from 0.2 to 0.3 mm.</p> |
申请公布号 |
DE2931469(A1) |
申请公布日期 |
1981.02.26 |
申请号 |
DE19792931469 |
申请日期 |
1979.08.02 |
申请人 |
BAYER AG |
发明人 |
HOPPE,HANS-GEORG,ING.;HENRICHS,PAUL,ING. |
分类号 |
B29B7/00;B29C39/00;B29C39/02;B29C39/26;C08J9/34;C08J9/36;F16F1/36;(IPC1-7):C08J7/04;C08J7/16;C08J9/02;C08L75/04 |
主分类号 |
B29B7/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|