发明授权
US4852629A Cold-box process for forming foundry shapes which utilizes certain
carboxylic acids as bench life extenders
失效
用于形成铸造形状的冷箱方法,其利用某些羧酸作为生命延长剂
- 专利标题: Cold-box process for forming foundry shapes which utilizes certain carboxylic acids as bench life extenders
- 专利标题(中): 用于形成铸造形状的冷箱方法,其利用某些羧酸作为生命延长剂
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申请号: US195562申请日: 1988-05-16
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公开(公告)号: US4852629A公开(公告)日: 1989-08-01
- 发明人: Robert B. Fechter , John J. Gardikes
- 申请人: Robert B. Fechter , John J. Gardikes
- 申请人地址: KY Russell
- 专利权人: Ashland Oil, Inc.
- 当前专利权人: Ashland Oil, Inc.
- 当前专利权人地址: KY Russell
- 主分类号: B22C1/22
- IPC分类号: B22C1/22 ; C08G18/08 ; C08G18/54
摘要:
Certain carboxylic acids are used in polyurethane-forming binder compositions to extend the bench life of such compositions. The binder compositions are particularly useful for preparing sand castings used for making foundry parts.
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