发明名称 |
Densified and re-expanded polyurethane foam and a method for preparing same. |
摘要 |
<p>Polyurethane foams having a specified glass transition temperature are densified for transportation or other purposes by heating the foam to a temperature above its Tg, compressing the heated foam, and then cooling the compressed foam to a temperature below its Tg. The cooled foam remains in a densified state until re-heated to a temperature above its Tg, whereupon it re-expands to assume its original dimensions.</p> |
申请公布号 |
EP0470697(A2) |
申请公布日期 |
1992.02.12 |
申请号 |
EP19910305956 |
申请日期 |
1991.07.01 |
申请人 |
THE DOW CHEMICAL COMPANY |
发明人 |
HERRINGTON, RONALD M.;TURNER, ROBERT B.;HARNDEN, ROBERT B. |
分类号 |
B29C67/20;B29K75/00;C08G18/48;C08J9/02;C08J9/36 |
主分类号 |
B29C67/20 |
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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