Patent GB-832622-A (GB)
Title: Improvements in and relating to paints, varnishes and lacquers
Inventor: LEES ERIC KARL
IPC: C09F7/00
Filed: 1956-03-05
Abstract: A medium for use in preparing paints and the like consists of the product of reacting a drying oil and/or a resin and an aluminium alcoholate derivative as defined below, such medium also containing a solvent and, if desired, untreated drying oil and/or resin.  By "aluminium alcoholate derivative" is meant alkoxy aluminium acylates, dialkoxy aluminium acylates, monoalkoxy aluminium diacylates, aluminium triacylates, aluminium alcoholates or acylates in which one or more alkoxy or acyl groups have been replaced by aryloxy groups, and the polymeric aluminium-containing compounds described in Specifications 809,309 and 806,113; the term does not include alcoholates per se, or alcoholates stabilized by the addition of compounds exhibiting keto-enol tautomerism.  Examples are given of media for paint and putty comprising linseed stand oil reacted with a partially split alkoxy aluminium acylate made from an alkoxy aluminium acylate of the formula Al(OR)1,5X1,5 in which OR is sec.-butoxide and X is soya bean fatty acids; and of media for paint and varnishes comprising linseed-oil-modified alkyd resins reacted with partially split monoisopropoxy aluminium dioctoate, and with a polyoxo-alkoxy-phenoxy aluminium acylate of the type (-O-Al-R)n, where R is 40% butoxide, 10% amyl phenoxide and 50% oleate; a linseed oil/dehydrated castor oil modified alkyd resin reacted with aluminium tri-sec.-butoxide; and a mixture of rosin-modified maleic resin modified with pentaerythritol and tung/linseed stand oil reacted with mono-sec.-butoxy aluminium mono-naphthenate mono-p-tert.-butyl benzoate.  Specifications 767,601 and 825,878 also are referred to.ALSO:A medium for use in preparing paints and the like consists of the product of reacting a drying oil and/or a resin and an aluminium alcoholate derivative as defined below, such medium also containing a solvent and, if desired, untreated drying oil and/or resin.  By "aluminium alcoholate derivative" is meant alkoxy aluminium acylates, dialkoxy aluminium acylates, monoalkoxy aluminium diacylates, aluminium triacylates (e.g. those obtained by reacting aluminium tri-isopropoxide with oleic or linoleic acids), aluminium alcoholates or acylates in which one or more alkoxy or acyl groups have been replaced by aryloxy groups, and the polymeric aluminium-containing compounds described in Specifications 809,309 (e.g. by reacting water and oleic acid with aluminium tri-sec-butoxide) and 806,113; the term does not include alcoholates per se, or alcoholates stabilized by the addition of compounds exhibiting keto-enol tautomerism.  The derivatives may be prepared in situ by adding the alcoholate and the other reagent to the medium.  Examples are given of media for paint and putty comprising (Examples 6, 7 and 8) linseed stand oil reacted with a partially split alkoxy aluminium acylate made as in Specification 806,113 from an alkoxy aluminium acylate of the formula Al(OR)1.5X1.5 in which OR is sec-butoxide and X is soya bean fatty acids; and of media for paint and varnishes comprising linseed-oil-modified alkyd resins reacted with (Examples 1 and 2) partially split monoisopropoxy aluminium dioctoate prepared as in Specification 806,113, and with (Example 3) a polyoxo-alkoxy-phenoxy aluminium acylate prepared as in Specification 825,878 of the type <FORM:0832622/IV (a)/1> where R is by molar proportions, 40% sec-butoxide, 10% amyl phenoxide and 50% oleate; (Example 4, in situ method), a linseed oil/dehydrated castor oil modified alkyd resin reacted with tall oil acids and aluminium tri-sec-butoxide; (Example 9) and a mixture of rosin-modified maleic resin esterified with pentaerythritol and tung/linseed stand oil, reacted with mono-sec-butoxy aluminium mononaphthenate mono-p-tert-butyl benzoate, and (Example 10) of a medium consisting of a solution of polyvinyl acetate in toluene containing a split mono-iso-propoxy aluminium dioctoate.  In Example (5) a linseed oil modified pentaerythritol alkyd resin is reacted with a poly-oxo aluminium oleate, prepared as in Specification 806,113, by heating mono-sec-butoxy aluminium dioleate.  Solvents specified are white spirit, toluene, sec-butanol and sec-butyl oleate.  Optional additives include drying oils (e.g. linseed), pigments (whiting and rutile TiO2), driers (Co and Pb naphthenates) and resins (linseed oil modified alkyd).  Uses.-Paints, varnishes, lacquers, inks, silk screen paints or inks, printing inks, putties and sealing compounds.  Specification 767,601 also is referred to.