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Ion exchange polymers and method for makingAn 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.
Document ID
19950011906
Acquisition Source
Legacy CDMS
Document Type
Other - Patent
Authors
Philipp, Warren H. (NASA Lewis Research Center Cleveland, OH, United States)
Street, Kenneth W., Jr. (NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
August 16, 2013
Publication Date
December 6, 1994
Subject Category
Nonmetallic Materials
Report/Patent Number
Patent Number: US-PATENT-5,371,110
Patent Application Number: US-PATENT-APPL-SN-081910
Patent Number: NASA-CASE-LEW-15576-1
Accession Number
95N18321
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
US-PATENT-5,371,110|NASA-CASE-LEW-15576-1
Patent Application
US-PATENT-APPL-SN-081910

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