Patent GB-722414-A (GB)
Title: Treatment of hydrophilic solid substances or materials to promote their adhesion to other materials
IPC: C03C17/30
Filed: 1951-06-08
Abstract: More permanent dyeing of glass fabric by use of a synthetic resin binder is obtained by preliminarily treating the fabric with an alkenyl halosilane and then washing with water to remove by hydrolysis any halogen atoms remaining on the surface.  In modifications, the surface may be treated with the reaction product of an alkenyl halosilane and an unsaturated hydroxyl compound, ester, amine, or mercaptan or may be treated with the alkenyl halosilane, then with an unsaturated hydroxyl compound, and finally washed with water.  Many unsaturated hydroxyl compounds are specified; betachloroallyl alcohol and betamethallyl alcohol are used in the examples.  The halosilane, which may be vinyltrichlorosilane, diallyldichlorosilane, triallylmonobromosilane, propargylbromoiodosilane, or allylvinylchlorobromosilane may be applied as a liquid or vapour with or without an inert diluent liquid or vapour.  The resin binder subsequently applied may be a phenol-, aniline- or melamine-aldehyde resin, polystyrene, an allyl or allyl-starch resin, an alkyd resin which may be styrenated, a siloxane resin, a sulphur dioxide-olefine resin or a vinyl or acrylic ester resin.ALSO:A hydrophilic solid substance or material, such as glass in the form of fibres, powder, or sheets, cellulosic floc, porcelain, powdered silica, mica, and diatomaceous earth, is made more receptive to coating with a plastic material such as a synthetic resin, by treating it with an alkenyl halosilane and then washing with water to remove by hydrolysis any halogen atoms remaining on the surface.  Treated siliceous pigments or fillers are more wettable by binders such as resins.  In modifications, the surface may be treated with the reaction product of an alkenyl halosilane and an unsaturated hydroxyl compound, ester, amine, or mercaptan or may be treated with the alkenyl halosilane, then with an unsaturated hydroxyl compound, and finally washed with water. Many unsaturated hydroxyl compounds are specified; betachloroallyl alcohol and betamethallyl alcohol are used in the Examples.  The halosilane, which may be vinyltrichlorosilane, diallyldichlorosilane, triallylmonobromosilane, propargylbromoiodosilane, or allylvinylchlorobromosilane, may be applied as a liquid or vapour with or without an inert diluent liquid or vapour.  The plastic material subsequently applied may be a phenol-, aniline-, or melamine-aldehyde resin, polystyrene, an allyl, or allyl-starch resin, an alkyd resin which may be styrenated, a siloxane resin, a sulphur dioxide-olefine resin, a vinyl or acrylic ester resin.ALSO:The ability of porcelain artificial teeth to bond with thermosetting resins used in making dentures is improved by treating the teeth with an alkenyl halosilane and then washing with water to remove by hydrolysis any halogen atoms remaining on the surface.  In modifications, the surface may be treated with the reaction product of an alkenyl halosilane and an unsaturated hydroxyl compound, ester, amine, or mercaptan or may be treated with the alkenyl halosilane, then with an unsaturated hydroxyl compound, and finally washed with water.  Many unsaturated hydroxyl compounds are specified; betachloroallyl alcohol and betamethallyl alcohol are used in the Examples.  The halosilane, which may be vinyltrichorosilane, diallyldichlorosilane, triallylmonobromosilane, propargylbromoiodosilane, or allylvinylchlorobromosilane, may be applied as a liquid or vapour with or without an inert diluent liquid or vapour.  Resins specified include phenol-, aniline-, or melamine-aldehyde resin, allyl, or allyl-starch resin, an alkyd resin which may be styrenated, a siloxane resin, or a sulphur dioxide-olefine resin.