| 发明名称 |
Process for the preparation of expandable microspheres |
| 摘要 |
Uniformity in the polymerization of expandable microspheres disclosed in U.S. Pat. 3,615,972 is improved by replacing a copolymer of adipic acid and diethanol amine with citric acid.
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| 申请公布号 |
US4016110(A) |
申请公布日期 |
1977.04.05 |
| 申请号 |
US19720275268 |
申请日期 |
1972.07.26 |
| 申请人 |
THE DOW CHEMICAL COMPANY |
发明人 |
COHRS, WILLIAM E.;GUNDERMAN, ROLAND E.;CROZIER, WILLIAM A. |
| 分类号 |
B01J13/18;(IPC1-7):C08J9/20 |
主分类号 |
B01J13/18 |
| 代理机构 |
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| 地址 |
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