| 发明名称 |
Microporous material exhibiting increased whiteness retention |
| 摘要 |
The tendency of microporous material to discolor over a period of time when exposed to the atmosphere during normal usage can be reduced if the microporous material comprises whiteness retaining organic surface active agent.
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| 申请公布号 |
US5326391(A) |
申请公布日期 |
1994.07.05 |
| 申请号 |
US19920977351 |
申请日期 |
1992.11.18 |
| 申请人 |
PPG INDUSTRIES, INC. |
发明人 |
ANDERSON, BARBARA J.;BENENATI, PAUL L.;JOHNSON, HARLAN B.;RECHLICZ, THOMAS A.;WILLIAMS, WILLIAM A. |
| 分类号 |
C08K9/04;(IPC1-7):C08K7/22;C04B16/08 |
主分类号 |
C08K9/04 |
| 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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