Patent GB-643724-A (GB)
Title: Improvements in or relating to coating and decorating compositions
IPC: D06P1/44
Filed: 1947-07-16
Abstract: Compositions, which on emulsification with water give water-in-lacquer emulsions suitable for printing textile fabrics, comprise copper phthalocyanine as pigment, a solution of a thermosetting resin, which is soluble in aromatic and insoluble in saturated aliphatic hydrocarbons, and a volatile solvent consisting mainly of pine terpene and which is substantially free from aromatic hydrocarbons and unsaturated aliphatic hydrocarbons. Thermosetting resins specified are phenol-, urea-, thiourea-, biuret-, guanidine-, melamine-aldehyde resins and oil-modified alkyd resins.  The emulsions are obtained by dispersing the pigment in the resin solution, adding the pine oil and water, and sulphonated tannin, and passing the mixture through a colloid mill.  In examples, the emulsion paste comprises: (1) 10 parts 50 per cent solution of hydrophobe ureaformaldehyde resin in butanol, 30 parts 50 per cent solution of castor oil modified alkyd resin in turpentine, 8 parts pine oil, 24 parts turpentine, 23 parts water, 2 parts sulphonated tannin and 3 parts copper phthalocyanine; in example (2) the urea resin is omitted; and in example (3) a melamine resin is substituted. The Specification as open to inspection under Sect. 91 described the use of cellulose derivatives, natural resins, fatty oils, synthetic and natural rubbers as alternatives to the synthetic resins, example (4) specifying a composition comprising 8 parts nitrocellulose (30 per cent alcohol), 8 parts glycerol-resin ester gum, 4 parts tricresyl phosphate, 6 parts TiO2, 1 part Cu phthalocyanine, 14.5 parts ethyl acetate, 14.5 parts butyl acetate, 3.7 parts denatured alcohol, 3.8 parts butanol, 36 parts petroleum distillate (b.r. 96-129 DEG  C. dimethyl sulphate value-2).  This subject-matter does not appear in the Specification as accepted.ALSO:Compositions, which on emulsification with water gives water-in-lacquer emulsions suitable for printing textile fabrics, comprise copper phthalocyanine as pigment, a solution of a thermosetting resin, which is soluble in aromatic and insoluble in saturated aliphatic hydrocarbons, and a volatile solvent consisting mainly of pine terpene and which is substantially free from aromatic hydrocarbons and unsaturated aliphatic hydrocarbons. Thermosetting resins specified are phenol-, urea-; thiourea-, biuret-, guanidine-, melamine-aldehyde resins and oil-modified alkyd resins.  The emulsions are obtained by dispersing the pigment in the resin solution, adding the pine oil and water, and sulphonated tannin and passing the mixture through a colloid mill. In examples the emulsion paste comprises: (1) 10 parts 50 per cent solution of hydrophobe urea-formaldehyde resin in butanol, 30 parts 50 per cent solution of castor oil modified alkyd resin in turpentine, 8 parts pine oil, 24 parts turpentine, 23 parts water, 2 parts sulphonated tannin and 3 parts copper phthalocyanine; in example (2) the urea resin is omitted; and in example (3) a melamine resin is substituted.  The Specification as open to inspection under Sect. 91 described the use of cellulose derivatives, natural resins, fatty oils, synthetic and natural rubbers as alternatives to the synthetic resins, example (4) specifying a composition comprising 8 parts nitrocellulose (30 per cent alcohol), 8 parts glycerol-resin ester gum, 4 parts tricresyl phosphate, 6 parts TiO2, 1 part Cu phthalocyanine, 14.5 parts ethyl acetate, 14.5 parts butyl acetate, 3.7 parts denatured alcohol, 3.8 parts butanol, 36 parts petroleum distillate (b.r. 96-129C dimethyl sulphate value-2). This subject-matter does not appear in the Specification as accepted.