Description: 8 bleaching and dyeing; fluid treatment and chemical modification of textiles and fibers / 8 bleaching and dyeing; fluid treatment and chemical modification of textiles and fibers/(539) synthetic fiber produced from material which contains pendant -coo-, -(o=)s(=o)-o-, -o-(o=)p(=o)-o-, pyridino, dialkylaminoalkyl-, or quaternary ammonium radical, dyeing process or product (540) quaternary ammonium, pyridino, or dialkylaminoalkyl
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