发明名称 |
Method of making expandable styrene-type beads |
摘要 |
Expandable styrene-type polymer beads having a short cooling time are made by impregnating the polymer beads, after the substantial completion of the polymerization, in an aqueous suspension medium comprising a suspending agent and about 0.005-0.3%, based on the weight of water, of non-ionic surfactant which is a copolymer of propylene oxide and ethylene oxide having an HLB number of 8-18 and an average molecuar weight of at least 1,000, and by subsequently washing and drying the beads.
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申请公布号 |
US4286069(A) |
申请公布日期 |
1981.08.25 |
申请号 |
US19800201659 |
申请日期 |
1980.10.28 |
申请人 |
AMERICAN HOECHST CORPORATION |
发明人 |
MILLINGTON, JAMES E.;PAPETTI, STELVIO |
分类号 |
C08J9/16;C08J9/18;(IPC1-7):C08J9/16 |
主分类号 |
C08J9/16 |
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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