Patent GB-1022215-A (GB)
Title: Aqueous dispersions
IPC: C09K23/00
Filed: 1964-01-29
Abstract: An aqueous dispersion of water-insoluble substances has as dispersant water-soluble, curable ethers of methylolamines or methylolureas whose methylol groups are etherified both with monohydric alcohols containing from 4 to 7 carbon atoms and with polyethylene glycols. The dispersant may be made from formaldehyde condensation products of melamine or urea and monohydric alcohols, for example, amyl alcohol, hexanol-1, 2-ethylbutanol-1, benzyl alcohol, butyl alcohol, and polyethyleneglycols of molecular weights from 600 to 20,000.  The water insoluble substances may be oils, fats, waxes, polysiloxanes; aliphatic, aromatic or cycloaliphatic hydrocarbons or chlorinated hydrocarbons (examples are given); resins such as epoxy, alkyd, polyester, polyamide, polyurethane resins; acetylcellulose; nitrocellulose; homopolymers and copolymers of -CH = C< compounds; condensation products of formal-dehyde with phenol, urea or aminotriazines; pesticides; optical brighteners; plasticizers such as dibutyl phthalate; pigments such as copper phthalocyanines, vat dyestuffs, azo dyestuffs, carbon blacks, metal powders, titanium dioxide, lithopones.  For dispersing water-insoluble solids, 0.5 to 2 or more parts by weight of dispersant are used for every part by weight of the solid.  For dispersing water-insoluble liquids, there may be used 1 to 2 parts by weight of the dispersant for every 100 parts by weight of the liquid.  Examples relate to (1) a textile fabric printing paste comprising pigment dyestuff, gasoline, a polymer latex, ammonium thiocyanate and the reaction product of hexamethylolmelamine butyl ether and polyethyleneglycol, (2) a textile printing paste comprising copper phthalocyanine, polyacrylic acid ester latex, ammonium chloride and the reaction products of hexamethylolmelamine butyl ether and polyethyleneglycol, (3) a rayon fabric printing paste comprising titanium white, gasoline, ammonium thiocyanate and the reaction product of a melamine-formaldehyde condensate with butanol and polyethylene glycol, (4) a textile water-repellent dressing comprising the reaction product of hexamethylolmelamine butyl ether with stearyl alcohol fused with the reaction product of hexamethylolmelamine butyl ether and polyethyleneglycol, the fused product being emulsified in water and ammonium thiocyanate being added, (5) an adhesive and bonding agent comprising a butanolic solution of dimethylolurea n-butyl ether emulsified in water by means of the reaction product of a polyethyleneglycol and dimethylolurea n-butyl ether, (6) a cotton fabric stiffening composition comprising an emulsion of a copolymer of n-butyl acrylate, vinyl acetate and acrylic acid using as dispersant the reaction product of a hexamethylolmelamine butyl ether and a polyethylene glycol, (7) a paint comprising titanium dioxide and kaolin dispersed in aqueous sodium ethylenediamine tetracetate by means of the reaction product of benzyl alcohol, melamine, formaldehyde and a polyethylene-glycol, there being added to the titanium dioxide dispersion pine-oil, dibutyl phthalate and an aqueous dispersion of a copolymer of acrylic acid butyl ester, acrylonitrile and acrylic acid.ALSO:An aqueous dispersion of water-insoluble substances has as dispersant water-soluble, curable ethers of methylolamines or methylol-ureas whose methylol groups are etherified both with monohydric alcohols containing from 4 to 7 carbon atoms and with polyethylene glycols. The dispersant may be made from formaldehyde condensation products of melamine or urea and monohydric alcohols for example amyl alcohol, hexanol-1, 2-ethylbutanol-1, benzyl alcohol, butyl alcohol, and polyethyleneglycols of molecular weights from 600 to 20,000.  The water-insoluble substances may be pigments such as copper phthalocyanines, carbon blacks, metal powders, titanium dioxide, lithopones. For dispersing water-insoluble solids, 0.5 to 2 or more parts by weight of dispersant are used for every part by weight of the solid. Examples relate to (2) a textile printing paste comprising copper phthalocyanine, polyacrylic acid ester latex, ammonium chloride and the reaction products of hexamethylolmelamine butyl ether and polyethyleneglycol; (3) a rayon fabric printing paste comprising titanium white, gasoline, ammonium thiocyanate and the reaction product of a melamine-formaldehyde condensate with butanol and polyethylene glycol; (7) a paint comprising titanium dioxide and kaolin dispersed in aqueous sodium ethylene-diamine tetracetate by means of the reaction product of benzyl alcohol, melamine, formaldehyde and a polyethylene-glycol, there being added to the titanium dioxide dispersion pine-oil, dibutyl phthalate and an aqueous dispersion of a copolymer of acrylic acid butyl ester, acrylonitrile and acrylic acid.ALSO:An aqueous dispersion of water-insoluble substances has as dispersant water-soluble, curable ethers of methylolamines or methylol-ureas whose methylol groups are etherified both with monohydric alcohols containing from 4 to 7 carbon atoms and with polyethylene glycols.  The dispersant may be made from formaldehyde condensation products of melamine or urea and monohydric alcohols for example amyl alcohol, hexanol-1, 2-ethylbutonal-1, benzyl alcohol, butyl alcohol, and polyethylene-glycols of molecular weights from 600 to 20,000.  The water insoluble substances may be oils, fats, waxes, polysiloxanes; aliphatic, aromatic or cycloaliphatic hydrocarbons or chlorinated hydrocarbons (examples are given); resins such as epoxy, alkyd, polyester, polyamide, polyurethane resins; acetylcellulose; nitrocellulose; homopolymers and copolymers of -CH = C< compounds; condensation products of formaldehyde with phenol, urea or aminotriazines; pesticides; optical brighteners; plasticizers such as dibutyl phthalate; pigments such as copper phthalocyanines, vat dyestuffs, azo dyestuffs, carbon blacks, metal powders, titanium dioxide, lithopones.  For dispersing water-insoluble solids, 0.5 to 2 or more parts by weight of dispersant are used for every part by weight of the solid.  For dispersing water-insoluble liquids, there may be used 1 to 2 parts by weight of the dispersant for every 100 parts by weight of the liquid.  Examples relate to (1) a textile fabric printing paste comprising pigment dyestuff, gasoline, a polymer latex, ammonium thiocyanate and the reaction product of hexamethylolmelamine butyl ether and polyethyleneglycol (2) a textile printing paste comprising copper phthalocyanine, polyacrylic acid ester latex, ammonium chloride and the reaction products of hexamethylolmelamine butyl ether and polyethyleneglycol (3) a rayon fabric printing paste comprising titanium white, gasoline, ammonium thiocyanate and the reaction product of a melamine-formaldehyde condensate with butanol and polyethylene glycol (4) a textile water-repellent dressing comprising the reaction product of hexamethylolmelamine butyl ether with stearyl alcohol fused with the reaction product of hexamethylolmelamine butyl ether and polyethyleneglycol, the fused product being emulsified in water and ammonium thiocyanate being added, and (5) a cotton fabric stiffening composition comprising an emulsion of a copolymer of n-butyl acrylate, vinyl acetate and acrylic acid using as dispersant the reaction product of a hexamethylolmelamine butyl ether and a polyethylene glycol.ALSO:An aqueous dispersion of water-insoluble substances has as dispersant water-soluble, curable ethers of methylolamines or methylol-ureas whose methylol groups are etherified both with monohydric alcohols containing from 4-7 carbon atoms and with polyethylene glycols.  The dispersant may be made from formaldehyde condensation products of melamine or urea and monohydric alcohols for example amyl alcohol, hexanol-1, 2-ethyl-butanol-1, benzyl alcohol, butyl alcohol, and polyethylene glycols of molecular weights from 600-20,000.  The water insoluble substances may be oils, fats, waxes; aliphatic, aromatic or cycloaliphatic hydrocarbons or chlorinated hydrocarbons (examples are given); optical brighteners; plasticizers such as dibutyl phthalate; pigments such as copper phthalocyanines, vat dyestuffs and azo dyestuffs.  For dispersing water-insoluble solids, 0,5-2 or more parts by weight of dispersant are used for every part by weight of the solid.  For dispersing water-insoluble liquids, there may be used 1-2 parts by weight of the dispersant for every 100 parts by weight of the liquid.  Examples include: (4) a textile water-repellent dressing comprising the reaction product of hexamethylolmelamine butyl ether with stearyl alcohol fused with the reaction product of hexamethylolmelamine butyl ether and polyethylene glycol, the fused product being emulsified in water and ammonium thiocyanate being added.