Patent GB-798412-A (GB)
Title: Improvements in or relating to the modification and production of titanium ester compounds
IPC: C07F7/00
Filed: 1954-08-06
Abstract: A process for chemically modifying a tetra or mixed orthotitanate of the formula Ti(OR)4 or a polymeric titanate of the formula RO[-Ti(OR)2O-]xR, wherein R is an alkyl, aryl, aralkyl or cycloalkyl radical and x is an integer greater than 1, comprises transesterifying such a titanium ester with a carboxylic ester containing a radical in its alcohol-derived portion which is different from at least one organic radical of the titanium ester and containing no free hydroxyl groups to form a product titanium ester different from the reactant titanium ester and a coproduct carboxylic acid ester different from the reactant carboxylic acid ester.  In a preferred embodiment a titanium ester of the formula Ti(OR)4, R being an alkyl, aryl, aralkyl or cycloalkyl radical containing at least 6 carbon atoms, for example tetra-octyl titanate, with a carboxylic acid ester of a polybasic alcohol, for example coconut oil, are mixed to form a stable intermediate solution which is heated to form a solid, tough body of glycerol, monoglyceride and diglyceride titanates plasticized by the octyl esters of the coconut acids.  The heating may be effected by radiation or baking and temperatures of 50 DEG  to 200 DEG  C. are suitable.  In examples: (1) butyl acetate and tetraisopropyl titanate are reacted and isopropyl acetate is distilled off to leave tetrabutyl titanate; (2) butyl acetate and tetraisopropyl titanate in different proportions are reacted to give diisopropyl dibutyl titanate; (3) reaction of guaiacol acetate and tetraisopropyl titanate give diguaiacol diisopropyl titanate; (4) phenyl benzoate and tetraisopropyl titanate are reacted to form tetraphenyl titanate; (5) a film of a mixture of coconut oil and tetraoctyl titanate is baked at 170 DEG  C. on a glass slide to form a solid film; (6) a solid film is formed by heating to 120 DEG  C. a xylene solution of a pentaerythritol phthalate resin completely esterified with soya bean acid and tetrastearyl titanate; (7) a xylene solution of an epichlorohydrinbis-phenol copolymer completely esterified with soy acids and tetrastearyl titanate is formed into a solid film by heating at 120 DEG  C. on a glass slide, or into a gel by heating at 70 DEG  C.; (8) hexaisopropyl dititanate (from the reaction of tetraisopropyl titanate with water) is reacted with benzyl acetate to form tetraisopropyl dibenzyl dititanate.ALSO:A process for chemically modifying a tetra or mixed orthotitanate of the formula Ti(OR)4 or a polymeric titanate of the formula RO[-Ti(OR)2O-]xR wherein R is an alkyl, aryl, aralkyl or cycloalkyl radical and x is an integer greater than 1, comprises transesterifying such a titanium ester with a carboxylic ester containing a radical in its alcohol-derived portion which is different from at least one organic radical of the titanium ester and containing no free hydroxyl groups to form a product titanium ester different from the reactant titanium ester and a co-product carboxylic acid ester different from the reactant carboxylic ester. Among the carboxylic acid esters specified as reactants are polyesters (e.g. glycerol or glycol/phthalic acid polyesters), polymethylmethacrylate, and fatty acid esters such as the soy acids ester of a copolymer of epichlorhydrin and p,p1-biphenol.  In examples: (6) a solid film is formed by heating to 120 DEG  C. a xylene solution of a pentaerythritol phthalate resin completely esterified with soy bean acid and tetrastearyl titanate; (7) a xylene solution of an epichlorohydrin-bis-phenol copolymer completely esterified with soy acids and tetrastearyl titanate is formed into a solid film by heating to 120 DEG  C. on a glass slide, or into a gel by heating at 70 DEG  C.