发明名称 |
Amine modified polyisocyanates and their use in foundry binder systems |
摘要 |
The invention relates to amine modified polyisocyanates having urea linkages and their use in foundry binder systems. The modified polyisocyanates are prepared by reacting a polyisocyanate with an aliphatic primary or secondary amine. These amine modified polyisocyanates, along with a phenolic resole resin, are added to a foundry aggregate to form a foundry mix which is shaped and cured with an amine curing catalyst.
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申请公布号 |
US5880174(A) |
申请公布日期 |
1999.03.09 |
申请号 |
US19960743766 |
申请日期 |
1996.11.07 |
申请人 |
ASHLAND INC. |
发明人 |
SINGH, RINA;DAMMANN, LAURENCE G. |
分类号 |
B22C1/22;C08G18/28;C08G18/54;C08G18/72;(IPC1-7):C08J3/00;C08K3/20;C08L75/00 |
主分类号 |
B22C1/22 |
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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