发明名称 |
Polyurethane forming no-bake foundry binders |
摘要 |
This invention relates to a polyurethane no-bake foundry binder comprising (1) phenolic resin component which comprises (a) a phenolic resin, (b) hydrofluoric acid, and (c) a silane, and (2) an organic polyisocyanate component, and (3) a liquid tertiary amine catalyst component. The binders are used to prepare foundry mixes by mixing the binder with a foundry aggregate. Foundry shapes are prepared with the mixes by the no-bake process and are used to cast metal parts.
|
申请公布号 |
US6017978(A) |
申请公布日期 |
2000.01.25 |
申请号 |
US19980032690 |
申请日期 |
1998.02.28 |
申请人 |
ASHLAND INC. |
发明人 |
CHEN, CHIA-HUNG;CHANG, KEN K.;HAUGSE, ALBERT LEONARD;DANDO, THOMAS E. |
分类号 |
B22C1/20;B22C1/22;(IPC1-7):B22C1/22 |
主分类号 |
B22C1/20 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|