发明名称 |
METHOD OF MAKING COMPOSITES HAVING IMPROVED SURFACE PROPERTIES |
摘要 |
Polymeric composite materials having a decreasing concentration gradient of polymer matrix from the material's surface to the material's interior. The composite is produced by a process whereby polymer matrix is extracted from the interior of the material in such a manner that the matrix concentration at the material's surface increases.
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申请公布号 |
US5178812(A) |
申请公布日期 |
1993.01.12 |
申请号 |
US19900619149 |
申请日期 |
1990.11.28 |
申请人 |
E. I. DU PONT DE NEMOURS AND COMPANY |
发明人 |
SANFORD, WILLIAM M.;UY, WILLIAM C. |
分类号 |
C08J5/00;B29B15/10;C08J9/26;D01F8/04 |
主分类号 |
C08J5/00 |
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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