Patent GB-771486-A (GB)
Title: Finishing open-grained porous wood
Filed: 1954-06-10
Abstract: Nitrocellulose compositions contain:- (i) Nitrocellulose, alkyd resin solution, maleic anhydride modified ester gum, blown castor oil, butyl acetate, methyl ethyl ketone, amyl acetate, ethyl, isopropyl and butyl alcohols, toluene and petroleum naphtha; (ii) nitrocellulose, blown castor oil, di-(2-ethylhexyl) phthalate, maleic anhydride modified ester gum, alkyd resin solution, ethyl alcohol, methyl isobutyl ketone, methyl isobutyl carbinyl acetate, amyl alcohol, petroleum naphtha and toluene; (iii) nitrocellulose, triethylene glycol dimethacrylate monomer, ethyl alcohol, ethyl acetate, butyl acetate, toluene and cobalt nitrate hexahydrate. Resinous condensation compositions contain:-(i) Alkyd resin, raw linseed oil, linseed oil acids, iron, manganese and lead naphthenates, brown pigment, amorphous silica, talc, calcium sulphate and mineral spirits, or (ii) urea formaldehydr resin, styreneated alkyd resin, ethyl acetate, xylene, octyl acid phosphate.  Resinous polymerization compositions comprise:- Polyvinyl, acetate in aqueous dispersion together with any of, or any combination of, the following substances: methyl phthalyl ethyl glycollate, ethylene glycol monobutyl ether, ethylene glycol monoethyl ether acetate, dibutyl or di-(2-ethylhexyl) phthalate, dibutyl tartrate, tributyl, tricresyl, tri-(2-ethylhexyl), or tri-(chloro-ethyl) phosphate, di- or triethylene glycol di-(2-ethylbutyrate), triethylene glycol di-(2-ethylhexoate), butyl phthalyl butyl glycollate and dibutyl sebacate. Specification 387,736, [Group IV], is referred to.ALSO:A process of producing improved adhesion and scratch resistance in a finishing system on open-grained decorative hard wood such as mahogany, walnut or oak comprises applying to the surface of the wood an aqueous filler composition comprising finely divided particles of polyvinyl, acetate and a coalescing agent, drying the said aqueous composition, applying thereover a coating composition comprising an organic film-forming material and a liquid solvent for the polyvinyl acetate, and drying the said coating composition.  Specified coalescent agents are ethylene glycol monobutyl ether, ethylene glycol monoethyl ether acetate, dibutyl or di (2-ethylhexyl) phthalate, dibutyl tartrate, tributyl, tricrsyl, tri (2 - ethyl - hexyl), or tri (chloro - ethyl) phosphate di- or triethylene glycol di (2-ethylbutyrate), triethylene glycol di: (2-ethylhexoate), butyl phthalyl butyl glycollate, dibutyl sebacate and methyl phthalyl ethyl glycellate.  Specified film forming materials include nitrocellulose, vegetable oils, drying and non-drying oil alkyl resins, modified ester gum, triethylene glycol dimethacrylate, urea formaldehyde resin and styrenated oil-modified alkyl resin.  Specified solvents for polyvinyl acetate include acetone, methyl ethyl ketone, methyl acetate, methyl alcohol, ethylene glycol mono-ethyl ether, benzene, trichloroethylene, dioxane, ethylene dichloride, nitromethane, tetrahydrofurane, chlorobenzine and carbon tetrachloride.  The polyvinyl acetate filler composition may be applied to a wood surface by spraying followed by rubbing and wiping.  In an example an aqueous polyvinyl acetate filler, prepared by mixing an aqueous dispersion of polyvinyl acetate with methyl phthalyl ethyl glycollate and water is sprayed on the surface of a mahogany panel and allowed to dry after which an oil-type pigmented wood filler was applied.  Immediately thereafter a sealing and finishing composition was sprayed on comprising nitrocellulose, triethylene glycol, trimethacrylate monomer, ethyl alcohol, ethyl acetate, butyl acetate, tolene and cobalt nitrate hexahydrate.  The panel was force-dried by heating, after which another coat of the sealing and finishing composition was sprayed on and the panel similarly dried again.  Specification 387,736 is referred to.