发明名称 |
Thermally stable and high impact resistant structural polyurethane foam |
摘要 |
Molded cellular polymers are disclosed which are derived from the reaction of organic polyisocyanates with novel active hydrogen compositions comprising (A) a polyester polyol mixture derived from (i) an aromatic polycarboxylic compound containing two or more carboxylic groups; and (ii) an excess of at least one polyol having from 2 to 8 hydroxyl groups and an equivalent weight of from about 30 to about 250; and (B) from about 5 to about 30 percent by weight of a primary or secondary amine terminated polyether of greater than 1500 molecular weight and amine functionality of from about 2 to about 8. The molded products are characterized by a combination of excellent impact strength and resistance to high temperatures as well as good resistance to burning.
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申请公布号 |
US4696954(A) |
申请公布日期 |
1987.09.29 |
申请号 |
US19860854968 |
申请日期 |
1986.04.23 |
申请人 |
THE DOW CHEMICAL COMPANY |
发明人 |
PRITCHARD, JAMES R.;REGELMAN, DALE F. |
分类号 |
C08G18/40;C08G18/50;(IPC1-7):C08G18/00;C08G18/14 |
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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