Patent GB-647251-A (GB)
Title: Improvements in or relating to emulsions for use in fabric-decorating
IPC: D06P1/44
Filed: 1947-05-16
Abstract: An emulsion for use in printing or dyeing fabrics comprises an inner aqueous phase containing a dispersed water-insoluble film-forming resin and an outer water-immiscible organic phase comprising a solution of a film-forming binder in a volatile organic solvent in which the dispersed water-soluble resin is insoluble.  A pigment may be dispersed in the outer phase. Preferably, the weight ratio of pigment to water-dispersed resin is from 1 : 0.5 to 1 : 2 and the weight ratio of pigment to binder is from 1 : 0.5 to 1 : 1.  The binder in the outer phase may be a cellulose derivative, e.g. ethyl cellulose, or a thermosetting resin such as urea-formaldehyde, melamine-formaldehyde, phenol-formaldehyde, or drying oil-modified alkyd resin.  The resins dispersed in the inner phase may be acrylate or methacrylate resins, vinyl polymers and co-polymers, co-polymers of butadiene and acrylonitrile, copolymers of butadiene and styrene, and polymers of organic dichlorides and alkali polysulphides.  The water-phase resin may conveniently be made by emulsion polymerization.  Suitable organic solvents are turpentine, mineral spirits, pine oil, and aromatic hydrocarbons boiling at 310-375 DEG F.  Examples are given of colour concentrates comprising (1) an outer phase consisting of turpentine, a solution of melamine-formaldehyde resin in butanol and xylene, Benzidine Yellow and ethyl acetate, into which is emulsified an aqueous dispersion of an emulsion copolymer of 1,3-butadiene and acrylonitrile; (2) an outer phase consisting of turpentine, melamine-formaldehyde resin of (1), pine oil, ethyl cellulose and copper phthalocyanine blue, into which is emulsified an aqueous dispersion of copolymerized ethylene dichloride and sodium polysulphide; and (3) an outer phase consisting of turpentine, the resin of (1), ethyl cellulose and copper phthalocyanine blue, into which is emulsified an aqueous dispersion of methacrylate polymer; examples are given also of vehicle concentrates free from pigments and printing pastes made therewith.  Specifications 523,090 and 561,642 are referred to.ALSO:An emulsion for use in printing or dyeing fabrics comprises an inner aqueous phase containing a dispersed water-insoluble film-forming resin and an outer water-immiscible organic phase comprising a solution of a film-forming binder in a volatile organic solvent in which the dispersed water-insoluble resin is insoluble.  A pigment may be dispersed in the outer phase. Preferably, the weight ratio of pigment to water-dispersed resin is from 1 : 0.5 to 1 : 2 and the weight ratio of pigment to binder is from 1 : 0.5 to 1 : 1.  The binder in the outer phase may be a cellulose derivative or a thermosetting resin such as urea-formaldehyde, melamine-formaldehyde, phenol-formaldehyde or drying oil-modified alkyd resin.  The resins dispersed in the inner phase may be acrylate or methacrylate resins, vinyl polymers and co-polymers, co-polymers of butadiene and acrylonitrile, copolymers of butadiene and styrene, and polymers of organic dichlorides and alkali polysulphides.  The water-phase resin may conveniently be made by emulsion polymerization. Suitable organic solvents are turpentine, mineral spirits, pine oil, and aromatic hydrocarbons boiling at 310-373 DEG  F.  Examples are given of colour concentrates comprising (1) an outer phase consisting of turpentine, a solution of melamine-formaldehyde resin in butanol and xylene, Benzidine Yellow and ethyl acetate, into which is emulsified an aqueous dispersion of an emulsion copolymer of 1,3-butadiene and acrylonitrile; (2) an outer phase consisting of turpentine, melamine-formaldehyde resin of (1), pine oil, ethyl cellulose and copper phthalocyanine blue, into which is emulsified an aqueous dispersion of copolymerized ethylene dichloride and sodium polysulphide; and (3) an outer phase consisting of turpentine, the resin of (1), ethyl cellulose and copper phthalocyanine blue, into which is emulsified an aqueous dispersion of methacrylate polymer; examples are given also of vehicle concentrates free from pigments and printing pastes made therewith.  Specifications 523,090 and 561,642 are referred to.