发明名称 |
Rigid polyurethane foams with low thermal conductivities |
摘要 |
Disclosed are rigid cellular polyurethanes prepared by bringing together under foam forming conditions an aromatic polyisocyanate and a polyhydric combination comprising a major proportion of a crude polyester polyol and minor proportion of a cross-linking polyol. This selection of particular ingredients gives rise to foams having extremely low initial insulation K factor values.
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申请公布号 |
US5169877(A) |
申请公布日期 |
1992.12.08 |
申请号 |
US19910638858 |
申请日期 |
1991.01.08 |
申请人 |
THE DOW CHEMICAL COMPANY |
发明人 |
TUCKER, BENJAMIN W.;BHATTACHARJEE, DEBKUMAR |
分类号 |
C08G18/40;C08G18/42;C08G18/48;C08G18/66;C08J9/02 |
主分类号 |
C08G18/40 |
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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