Process for dyeing leathers, water-soluble cationic polymers suitable for that purpose, and process for their preparation
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United States of America Patent
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Oct 4, 1988
Grant Date -
N/A
app pub date -
Aug 20, 1986
filing date -
Aug 27, 1985
priority date (Note) -
Expired
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Abstract
The invention relates to water-soluble cationic polymers and to their use in leather dyeing. The polymers preferably have K values of from about 20-45 and are obtained by reacting polyacrylonitrile or acrylonitrile copolymers in the presence of alcohols or polyols, optionally in the presence of a sulfur-containing catalyst.
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