公开(公告)号：EP0949979A4

公开(公告)日：2000-04-05

申请号：EP97911876

申请日：1997-10-20

申请人： ASHLAND INC

发明人： SINGH RINA ,  DAMMANN LAURENCE G

IPC分类号： B22C1/22 ,  C08G18/18 ,  C08G18/54 ,  C08G18/80

CPC分类号： C08G18/1891 ,  B22C1/2273 ,  C08G18/542 ,  C08G18/8064

摘要： The invention relates to foundry binder systems which use modified polyisocyanates. The modified polyisocyanates are prepared by reacting a polyisocyanate with an aliphatic alcohol having one active hydrogen atom. These 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 a gaseous amine curing catalyst.

摘要翻译： 本发明涉及使用改性聚异氰酸酯的铸造粘合剂体系。 改性多异氰酸酯通过使多异氰酸酯与具有一个活性氢原子的脂族醇反应来制备。 将这些改性聚异氰酸酯连同酚醛树脂甲阶酚醛树脂一起加入到铸造聚集体中以形成铸造混合物，该铸造混合物用气态胺固化催化剂成型并固化。