发明名称 |
Process for preparing polycarbonate copolymer foam suitable for lost foam casting |
摘要 |
The evaporative casting of molten metals has been shown to produce castings having smooth surfaces without any sign of carbon deposits thereon by using a copolymer polycarbonate prepared from cyclohexene oxide, cyclopentene oxide, cycloheptene oxide, or isobutylene oxide and carbon dioxide.
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申请公布号 |
US4773466(A) |
申请公布日期 |
1988.09.27 |
申请号 |
US19870132099 |
申请日期 |
1987.12.14 |
申请人 |
ARCO CHEMICAL COMPANY |
发明人 |
CANNARSA, MICHAEL J.;KESLING, JR., HAVEN S.;SUN, HSIANG-NING |
分类号 |
B22C7/02;B29C33/38;C08J9/18;(IPC1-7):B22C7/02 |
主分类号 |
B22C7/02 |
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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