发明授权
US4383834A Coloring of paper 失效
着色纸

Coloring of paper
摘要:
A process for coloring paper with an acid dye and/or direct dye in an aqueous medium in the presence of a water-soluble reaction product of an alkylating agent, possessing an aromatic substituent, with a cationic polyelectrolyte.The process gives papers with high color strength and substantially avoids cylinder twosidedness of the coloration.
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