发明名称 |
Process for making flexible polyurethane foams |
摘要 |
Process for preparing a flexible polyurethane foam by reacting a polyisocyanate and two different polyols under foam forming conditions so as to prepare a rigid foam, by crushing the rigid foam so obtained and by subjecting the flexible foam so obtained to a heat treatment. Flexible foams are obtained which do not show a major glass transition temperature between -100 DEG C. and +25 DEG C.
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申请公布号 |
US6020390(A) |
申请公布日期 |
2000.02.01 |
申请号 |
US19970963833 |
申请日期 |
1997.11.04 |
申请人 |
IMPERIAL CHEMICAL INDUSTRIES PLC |
发明人 |
LEENSLAG, JAN WILLEM |
分类号 |
C08G18/66;B29C44/56;B29C67/20;C08G18/65;C08G18/82;C08J9/36;(IPC1-7):C08G18/10 |
主分类号 |
C08G18/66 |
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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