Patent GB-857088-A (GB)
Title: Improvements in or relating to resinous compositions
IPC: C09D163/00
Filed: 1957-09-09
Abstract: Resinous compositions comprise a finely divided normally solid perfluorochloroethylene polymer and a phenolic compound comprising a substantially monomeric alkylol phenol or etherified alkylol phenol, there being 5 to 100 parts by weight of said compound per 100 parts of polymer.  The compositions may also comprise epoxide resins, e.g. those formed by condensation of epichlorhydrin and glycerol dichlorhydrin with polyhydroxy compounds such as mannitol, sorbitol, erythritol, pentaerythritol, polyallyl alcohol, glycerol, trimethylol propane, p, p1dihydroxy diphenyl dimethyl methane and tri hydric phenols; plasticisers, e.g. low molecular weight telomers of perfluorochloro olefines and rubbery and resinous copolymers, e.g. of trifluorochloroethylene and vinylidene fluoride; rust-preventatives, e.g. phosphoric acid, and stabilizers, e.g. barium peroxide, lead dioxide, chromic oxide, chromic sulphide, cadmium oxide, cadmium sulphide, mercuric oxide, mercuric sulphide, cobaltic oxide, cobalt sulphide, zinc oxide, zinc sulphide, stannic oxide, and stannic sulphide. Specified perfluorochloroethylene polymers are homopolymers of trifluorochloroethylene, symmetrical and unsymmetrical difluorodichloroethylene and trichlorofluoroethylene, and copolymers thereof with vinylidene chloride and fluoride and vinyl chloride and fluoride.  The phenolic compound may be the allyl ether of trimethylol phenol.  Other phenolic compounds mentioned, but not exemplified, are those having the formula: <FORM:0857088/IV(a)/1> where R1 is alkylene, n is 1, 2 or 3, and R may be e.g. methyl, ethyl, propyl, isobutyl, butyl, vinyl, allyl, methallyl, cyclopentenyl, benzyl, styryl, and halogenated aliphatic radicals. The compositions may be used as caulking compositions and putties, and together with a volatile liquid vehicle as coating compositions which may be hardened and fused into a continuous adherent film by heating.  The coating compositions may be used as primers for perfluorochloro-olefin polymer coating compositions, and may be applied to metals, fibreglass, asbestos and porcelain. Specified liquid vehicles are aromatic and aliphatic ketones, aromatic hydrocarbons and alcohols and mixtures, e.g. diisobutyl ketone, methyl ethyl ketone, xylene and isobutanol; xylene, diisobutyl ketone and isobutanol; amyl acetate methyl ethyl ketone and isobutanol; and amyl acetate and isobutanol.  Specifications 742,907, 742,908 and 744,256 are referred to.ALSO:Articles are coated with compositions comprising a normally solid perfluorochloroethylene polymer and a substantially monomeric alkylol phenol or etherified alkylol phenol, there being 5 to 100 parts of said phenol derivative per 100 parts by weight of polymer.  The compositions may be applied to metals, e.g. steel panels, fibreglass, asbestos or porcelain and fused to a continuous film by baking and thereafter coated with a perfluorochloroethylene polymer dispersion.  Preferably an intermediate mixed coat is applied consisting of successive applications of the above compositions fused by baking.  The under coating compositions may also comprise epoxide resins, e.g. those formed by the condensation of epichlorhydrin and glycerol dichlorhydrin with polyhydroxy compounds such as mannitol, sorbitol, erythritol, pentaerythritol, polyalkyl alcohol, glycerol, trimethylol propane, p,p1-dihydroxy diphenyl dimethylmethane and trihydric phenols; plasticizers, e.g. low molecular weight telomers of perfluorochloroolefins and rubbery and resinous copolymers of trifluorochloroethylene and vinylidene fluoride; rust preventatives, e.g. phosphoric acid; and stabilizers, e.g. barium peroxide, lead dioxide, chromic oxide, chromic sulphide, cadmium oxide, cadmium sulphide, mercuric oxide, mercuric sulphide, cobaltic oxide, cobalt sulphide, zinc oxide, zinc sulphide, stannic oxide and stannic sulphide.  Specified perfluorochloroethylene polymers are homopolymers of trifluorochloroethylene, symmetrical and unsymmetrical difluorodichloroethylene and trichlorofluoroethylene, and copolymers thereof with vinylidene chloride and fluoride and vinyl chloride and fluoride.  The phenolic compound may be the alkyl ether of trimethylol phenol.  Specified liquid vehicles are aromatic and aliphatic ketones, aromatic hydrocarbons, alcohols and esters, e.g. diisobutyl ketone, methyl ethyl ketone, xylene and isobutanol; xylene, diisobutyl ketone and isobutanol; amyl acetate, methyl ethyl ketone and isobutanol; and amyl acetate and isobutanol.  The compositions may be applied by spray, dip, knife, brushing and flour-coating techniques.  Specifications 742,907, 742,908 and 744,256 are referred to.