发明名称 |
Ion exchange polymers and method for making |
摘要 |
An ion exchange polymer comprised of an alkali metal or alkaline earth metal salt of a poly(carboxylic acid) in a poly(vinyl acetal) matrix is described. The polymer is made by treating a mixture made of poly(vinyl alcohol) and poly(acrylic acid) with a suitable aldehyde and an acid catalyst to cause acetalization with some cross-linking. The material is then subjected to an alkaline aqueous solution of an alkali metal salt or an alkali earth metal salt. All of the film forming and cross-linking steps can be carried out simultaneously, if desired. |
申请公布号 |
US5371110(A) |
申请公布日期 |
1994.12.06 |
申请号 |
US19930081910 |
申请日期 |
1993.06.21 |
申请人 |
THE UNITED STATES OF AMERICA AS REPRESENTED BY THE ADMINISTRATOR OF THE NATIONAL AERONAUTICS AND SPACE ADMINISTRATION |
发明人 |
PHILIPP, WARREN H.;STREET, JR., KENNETH W. |
分类号 |
B01J47/00;C08F8/28;C08J5/22;(IPC1-7):B01J39/18;C08L23/26 |
主分类号 |
B01J47/00 |
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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