Bleed-fast cationic dyestuffs

Paper making and fiber liberation – Processes and products – Non-fiber additive

Patent

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D21H 380

Patent

active

043942121

ABSTRACT:
Bleed-fast, dyed cellulosics particularly absorbent papers have been obtained with a particular class of water-soluble, cationic dyes reacted with a water-soluble dialdehyde, preferably glyoxal or glutaraldehyde. An aqueous printing fluid containing the water-soluble cationic dye and the dialdehyde, upon drying, produces a water-resistant dyestuff having improved bleed fastness upon cellulosic fibers.

REFERENCES:
patent: 4340386 (1982-07-01), Pociluyko

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