发明名称 |
Method for producing soft to medium-hard structural polyurethane foams |
摘要 |
The invention provides a process for preparing flexible to semi-rigid polyurethane moulded items with compacted edge zones with given hardness and a much more flexible cellular core, so-called integral foams, in which physical blowing agents from the set comprising C6 hydrocarbons are used.
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申请公布号 |
US6235799(B1) |
申请公布日期 |
2001.05.22 |
申请号 |
US19990424050 |
申请日期 |
1999.11.17 |
申请人 |
BAYER AKTIENGESELLSCHAFT |
发明人 |
EISEN NORBERT;AVAR GEZA;HAAS PETER |
分类号 |
C08G18/65;C08J9/14;C08J9/34;(IPC1-7):C08J9/34 |
主分类号 |
C08G18/65 |
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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