发明名称 |
No-bake process for preparing foundry shapes for casting low melting metal castings |
摘要 |
This invention relates to a no-bake process for preparing foundry shapes which utilizes polyurethane-forming binders containing selected polyester polyols. The resulting foundry shapes are particularly useful in preparing castings from low melting metals.
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申请公布号 |
US4982781(A) |
申请公布日期 |
1991.01.08 |
申请号 |
US19890308346 |
申请日期 |
1989.02.09 |
申请人 |
ASHLAND OIL, INC. |
发明人 |
CARPENTER, WILLIAM G.;DUNNAVANT, WILLIAM R. |
分类号 |
B22C1/22;C08G18/40 |
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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