发明名称 |
Process for producing extruded foam products with higher levels of CO2 as a blowing agent |
摘要 |
In one embodiment, the present invention relates to a process for preparing a foam product involving the steps of (A) forming a foamable mixture of (1) a polymer comprising about 10% to about 90% monomers of at least one of meta-substituted styrene and para-substituted styrene and 0% to about 90% monomers of styrene, and (2) a blowing agent containing a major amount of carbon dioxide under a pressure sufficient to prevent prefoaming of the mixture and (B) foaming the mixture into a region of reduced pressure to form the foam product.
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申请公布号 |
US6187831(B1) |
申请公布日期 |
2001.02.13 |
申请号 |
US19980154288 |
申请日期 |
1998.09.16 |
申请人 |
OWENS CORNING FIBERGLAS TECHNOLOGY, INC. |
发明人 |
MILLER LARRY M.;BREINDEL RAYMOND M.;WEEKLEY MITCHELL Z. |
分类号 |
C08J9/12;C08L25/02;C08L25/16;(IPC1-7):C08J9/14 |
主分类号 |
C08J9/12 |
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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