Patent GB-1018269-A (GB)
Title: Improvements in or relating to resin compositions
IPC: C09D127/12
Filed: 1963-03-25
Abstract: An aerosol composition comprises nitrocellulose, low molecular weight P.T.F.E. and organic liquids plus dichlorodifluoromethane and is used for spraying low-friction coatings on to moving parts of doors and windows.ALSO:Dispersions comprise 5 to 60% of particles of a fluorocarbon polymer having a molecular weight of 2,000 to 10,000, 40 to 95% of a thermosettable or thermoplastic resin, 0 to 30% of particles of polytetrafluoroethylene having a molecular weight above 500,000, and a solvent for the said resin, the percentages being based on the total weight of solids.  Specified fluorocarbon polymers are polymers and copolymers of ethylene, propylene and butylene completely substituted with fluorine or fluorine and chlorine, e.g. polytetrafluoroethylene, polychlorotrifluoroethylene, and copolymers of tetrafluoroethylene with hexafluoropropylene or octafluorobutylene.  Specified resins are phenolic, epoxy, alkyd, polyurethane, urea, melamine, triazine, thermosetting silicone and thermosetting acrylic resins, and cellulosic and vinyl resins, chlorinated rubbers, acrylics, polycarbonates, polyalkenes, polyamides and hydrocarbon resins.  Many suitable resins are specified, and solvent systems which may be wholly organic or partly aqueous suitable for use therewith are described.  The dispersions may also comprise up to 40% by weight of the solids of lubricants, e.g. graphite, molybdenum disulphide, boron nitride, talc, vermiculite, cadmium chloride, tungsten disulphide, silver sulphide, metal-free phthalocyanine, lead monoxide, chromic chloride, manganous chloride and nickelous chloride.  The compositions may be used for coating metals, glass, wood, leather, rubber and plastics, the coatings being dried and, in the case of thermosetting resins, cured at an elevated curing temperature. Examples describe compositions comprising low molecular weight tetrafluoroethylene polymers and (I) and (II) phenolformaldehyde resin, glycol monoethyl ether acetate, n-butanol, toluene and methyl isobutyl ketone; III alkylated ureaformaldehyde resin, glycol monoethyl ether, toluene and n-butanol; (IV) epoxy modified phenol-formaldehyde resin, glycol monoethyl ether acetate, toluene, n-butanol and methyl isobutyl ketone; (V) thermosetting silicone resin, glycol monoethyl ether acetate, toluene, n-butanol, trichlorotrifluoroethane and zinc octoate; (VI) soya oil modified alkyd resin, xylene, lead octoate and cobalt octoate; (VII) epoxy resin, glycol monoethyl ether, toluene, nbutanol and methyl isobutyl ketone; (VIII) thermosetting acrylic acid copolymer, glycol monoethyl ether, toluene, n-butanol and methyl isobutyl ketone; (IX) polyurethane resin, toluene and methyl isobutyl ketone; (X) phenol-formaldehyde resin, glycol monoethyl ether acetate, tolune, n-butanol, methyl isobutyl ketone and tungsten disulphide; (XI) phenol-formaldehyde resin, high molecular weight polytetrafluoroethylene, glycol monoethyl ethyl ether acetate, toluene, butanol and methyl isobutyl ketone; (XV) phenol-formaldehyde resin, graphite, glycol monoethyl ether acetate, tolune, butanol and methyl isobutyl ketone; (XVI) nitrocellulose, n-propyl acetate, butanol, toluene, and isopropanol; (XIX) cellulose acetate butyrate, toluene, denatured ethanol and methyl ethyl ketone; (XX) ethyl cellulose, xylene and methyl isobutyl ketone; (XXI) a vinyl chloride-vinyl acetate-maleic acid copolymer, toluene, cyclohexanone and methyl isobutyl ketone; (XXII) polyvinyl butyral, butanol, propyl acetate, propanol, toluene and trichlorotrifluoroethane; (XXIII) acrylic ester polymer, toluene and methyl isobutyl ketone; (XXIV) hydrocarbon resin, xylene and toluene; (XXV) chlorinated rubber, xylene and methyl isobutyl ketone; (XXVI) nitrocellulose, high molecular weight polytetrafluoroethylene, butanol, isopropanol, toluene and propyl acetate; (XXVII) nitrocellulose, butanol, isopropanol, toluene, propyl acetate and graphite; (XXX) nitrocellulose, isopropanol and molybdenum disulphide; (XXXI) nitrocellulose, isopropanol and graphite; and (XXXII) nitrocellulose, butanol, propanol, toluene and propyl acetate.ALSO:Substrates, e.g. of metal, glass, wood, leather, rubber and plastic, are coated e.g. by spraying with dispersions comprising 5-60% of particles of a fluorocarbon polymer of molecular weight 2000-10,000, 40-95% of a thermosettable or thermoplastic resin, 0-30% of particles of polytetrafluoroethylene having a molecular weight above 500,000, and a solvent for said resin, the percentages being based on the total weight of solids.  Examples describe the coating of steel panels and bearing races with dispersions comprising low molecular weight tetrafluoroethylene polymers and (I and II) phenol/formaldehyde resin, ethoxyethyl acetate, n-butanol, toluene and methyl isobutyl ketone; (III) alkylated urea/formaldehyde resin, ethoxyethanol, toluene and n-butanol; (IV) epoxy modified phenol/formaldehyde resin, ethoxyethyl acetate, toluene, n-butanol and methyl isobutyl ketone; (V) thermosetting silicone resin, ethoxyethyl acetate, toluene, n-butanol, trichlorotrifluoroethane and zinc octoate; (VI) soya oil modified alkyd resin, xylene, lead octoate and cobalt octoate; (VII) epoxy resin, ethoxyethanol, toluene, n-butanol and methyl isobutyl ketone; (VIII) acrylic acid copolymer, ethoxyethanol, toluene, butanol and methyl isobutyl ketone; (X) phenol/formaldehyde resin, ethoxyethyl acetate, toluene, butanol, methyl isobutyl ketone and tungsten disulphide; (XII) phenol/formaldehyde resin, ethoxyethyl acetate, toluene, butanol, methyl isobutyl ketone, together with (XI) high molecular weight polytetrafluoroethylene; (XVI) nitrocellulose, n-propyl acetate, butanol, isopropanol and toluene; (XIX) cellulose acetate butyrate, toluene, ethanol and methyl ethyl ketone; (XX) ethyl cellulose, xylene and methyl isobutyl ketone; (XXI) vinyl chloride/vinyl acetate/maleic acid copolymer, toluene, cyclohexanone and methyl isobutyl ketone; (XXII) polyvinyl butyral, butanol, propyl acetate, propanol, toluene and trichlorotrifluoroethane; (XXIII) acrylic ester polymer, toluene and methyl isobutyl ketone; (XXIV) hydrocarbon resin, xylene and toluene; (XXV) chlorinated rubber, xylene and methyl isobutyl ketone; (XXVI) nitrocellulose, high molecular weight polytetrafluoroethylene, butanol, isopropanol, toluene and propyl acetate; and (XXVII) nitrocellulose, butanol, isopropanol, toluene, propyl acetate and graphite; the coating of rubber automobile window mouldings with dispersions comprising (IX) low molecular weight polytetrafluoroethylene, polyurethane resin, toluene and methyl isobutyl ketone; and the coating of window channels, drawer edges and door facings with dispersions comprising (XXXII) low molecular weight polytetrafluoroethylene, nitrocellulose, toluene, propanol, butanol and propyl acetate.