Dispersions of polymers containing sulphonate groups, a process

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...

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4284231, 428473, 428913, 524591, C08J 306, C08L 7504, C09D 502

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active

043851371

ABSTRACT:
The present invention is directed to aqueous dispersions having a solid content of at least about 10% by weight of polymers containing from about 0.1 to 6% by weight of incorporated sulphonate groups, characterized in that cations of at least divalent metals, silver or monovalent copper are present in the dispersions as counterions to the chemically-incorporated sulphonate anions to at least about 80 equivalent percent, based on the total quantity of the cations present.
Another object of this invention is a process for the production of such aqueous dispersions which is characterized in that aqueous dispersions having a solid content of at least about 10% by weight, of polymers containing from about 0.1 to 6% of incorporated sulphonate groups, in which alkali metal cations or monovalent ammonium cations are present as counterons, are treated with a cation exchanger which is charged with cations of the above-mentioned type.
A final object of this invention is the use of the dispersions according to the invention as coating agents in a coating operation for flexible or rigid substrates.

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