Stable aqueous dispersions of o-dianisidine fast to storing, for the preparation ofwater-insoluble azo dyestuffs on fibrous materials

摘要

Aqueous dispersions of o-dianisidine contain as dispersing agent: RO-Ar-CH2-Ar-O-(CH2CH2O)n -CH2CH2OR where Ar is an arylene radical, R is a C1-3 alkyl group and n is 7-50. Various compounds are specified in which R is methyl or ethyl, Ar is naphthyl or phenyl and n is 14-29. Other ingredients specified are fungicides (sodium phenol pentachloride) and anti-freeze agents (glycol, glycerin, sorbitol).