发明名称 |
Foamable gel with an aqueous blowing agent expandable to form a unimodal styrenic polymer foam structure and a process for making the foam structure |
摘要 |
Disclosed is a foamable styrenic polymer gel containing an aqueous blowing agent capable of forming a closed-cell, unimodal foam structure. The gel composes in admixture the flowable melt of a polymer composition having greater than 50 percent by weight of a styrenic polymer and a blowing agent having about 1 percent or more by weight water based upon the total weight of the blowing agent. The styrenic polymer has a degree of water solubility sufficient to ensure formation of a unimodal foam structure instead of a bimodal foam structure. The unimodal cell size distribution provides desirable fabricability and machinability characteristics for the foam structure.
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申请公布号 |
US5380767(A) |
申请公布日期 |
1995.01.10 |
申请号 |
US19920965589 |
申请日期 |
1992.10.23 |
申请人 |
THE DOW CHEMICAL COMPANY |
发明人 |
SUH, KYUNG W.;PAQUET, ANDREW N. |
分类号 |
C08J9/04;B29C44/00;B29K25/00;C08J9/12;(IPC1-7):C08J9/00 |
主分类号 |
C08J9/04 |
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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