Processes for improving the dyeability of textile

专利名称：Processes for improving the dyeability of

textile fibers, films, and moulded articles

发明人：BONVICINI ALBERTO,CALDO CORNELLO申请号：US82384159申请日：19590630公开号：US3037835A公开日：19620605

摘要：The dyeability of articles made from homopolymers or copolymers of

acrylonitrile, methyl methacrylate or vinyl chloride is improved by incorporating therein apolyethyleneimine of the type containing a group, in which R is hydrogen or an alkyl oraryl group, which has been rendered wholly or partially insoluble in water, the

polyethyleneimine : polymer ratio being from 1:9 to 20:80. Polyethyleneimines specifiedare those which have been water-insolubilized by treatment with hydrogen peroxide,acidified potassium persulphate or hexamethylenediisocyanate, or cyanoethylated withacrylonitrile. In the examples (1) polyacrylonitrile and polyethyleneimine which has beentreated with hydrogen peroxide are dissolved in dimethylformamide to provide asolution from which fibres are spun which are dyeable with acid dyes; (2)

polyethyleneimine which has been treated with hydrogen peroxide and polyvinyl chlorideare dissolved in a mixture of trichloroethylene and nitromethane, and from the resultingsolution fibres are spun which are treated with hexamethylene isocyanate prior to dyeing;and (3) a mixture of p polyacrylonitrile and cyanoethylated polyethyleneimine aredissolved in dimethyl formamide, and from the resulting solution dyeable films areprepared.

申请人：MONTECATINI SOCIETA GENERALE PER L'INDUSTRIA MINERARIA E CHIMICA

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