发明名称 |
PROCESS FOR PRODUCING EXTRUDED POLYSTYRENE FOAM PRODUCTS WITH CO2 CONTAINING BLOWING AGENTS |
摘要 |
<p>In one embodiment, the present invention relates to a process for preparing foam board or sheet including the steps of (a) forming a foamable mixture of (1) a major amount of a styrenic polymer having a high melt index, (2) a minor amount of a low melt index styrenic polymer, and (3) 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 fo rm a foam product.</p> |
申请公布号 |
CA2346992(C) |
申请公布日期 |
2009.12.29 |
申请号 |
CA19992346992 |
申请日期 |
1999.10.21 |
申请人 |
OWENS CORNING |
发明人 |
MILLER, LARRY M.;BREINDEL, RAYMOND M.;CISAR, THOMAS E.;WEEKLEY, MITCHELL Z. |
分类号 |
C08J9/12;C08J3/18;C08J9/00;C08L25/04 |
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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