Process for the dyeing of polyacrylonitrile materials with cationic benzo-thiazolium azo dye
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United States of America Patent
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Nov 17, 1992
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N/A
app pub date -
Dec 3, 1990
filing date -
Dec 6, 1989
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Expired
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Abstract
Process to dye polyacrylonitrile in blue shades with cationic dye compounds: substituted benzothiazolium azo N-alkyl-N-hydroxyalkyl alkyl-aniline salts.
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