发明授权
US5880174A Amine modified polyisocyanates and their use in foundry binder systems
失效
胺改性多异氰酸酯及其在铸造粘合剂体系中的应用
- 专利标题： Amine modified polyisocyanates and their use in foundry binder systems
- 专利标题（中）： 胺改性多异氰酸酯及其在铸造粘合剂体系中的应用
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申请号： US743766申请日： 1996-11-07
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公开(公告)号： US5880174A公开(公告)日： 1999-03-09
- 发明人: Rina Singh , Laurence G. Dammann
- 申请人： Rina Singh , Laurence G. Dammann
- 申请人地址： OH Columbus
- 专利权人： Ashland Inc.
- 当前专利权人： Ashland Inc.
- 当前专利权人地址： OH Columbus
- 主分类号： B22C1/22
- IPC分类号： B22C1/22 ; C08G18/28 ; C08G18/54 ; C08G18/72 ; C08J3/00 ; C08K3/20 ; C08L75/00
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.
公开/授权文献
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