Patent GB-866054-A (GB)
Title: Lubricants
IPC: C10M159/18
Filed: 1957-04-23
Abstract: Lubricating oil compositions comprise a synthetic lubricating oil having a viscosity of 30 to 250 SUS/210 DEG F. and consisting of carbon, hydrogen, oxygen and silicon, a base oil-compatible organic titanium-containing compound other than the reaction product of 1 mole of a titanium tetraester with 1/2 to 4 moles of a C2-24 glycol, and a base oil compatible dicarboxylic acid, the titanium compound and acid being present in amounts at least sufficient to enhance the load carrying capacity of the composition, e.g. 0,001 to 5 wt. per cent and 0,005 to 1 wt. per cent respectively.  The oil may be a polymethyl, polyethyl or polyphenyl siloxane having a molecular weight of 200 to 1,000.  The dicarboxylic acid may contain 20 or 2 to 12 carbon atoms.  Titanium-containing compounds specified are as follows, the numbers in brackets referring to U.S.A.  Specifications describing them:-polymers of organic derivatives of orthotitanic acid, e.g. the tetraesters, mixed anhydrides, and tetra-amides and -imides (2,689,858); polymeric mixed esters of orthotitanic acid (2,614,112); polymers of organo mono- and di-chlorotitanates (2,727,918); polymeric titanium carboxylates (2,621,195); reaction products of aliphatic carboxylic acids with esters of orthotitanic acid (2,621,193) or a titanium tetrahalide (2,621,194); acidolysis reaction products of polymeric titanium acylates and a carboxylic acid (2,708,203); vinyl esters of titanium and their polymers (2,708,205); monomeric or polymeric reaction of a titanium tetraester and a glycol other than those described in Specification 866,053 (using 1/2 to 4 moles of C2-24 glycol per mole of tetraester); titanium chelates, e.g. titanium ethyl acetoacetate, titanium N, N1-ethylenimine-bis-acetylacetonate, titanium acetylacetonate, titanium acetoacetanilide, and titanium acetoacet-#s-toluidide; reaction products of a tetravalent titanic acid halide or ester with an aldehyde, ketoalcohol or dicarbonyl compound (2,680,108); the monomeric titanium compounds used to produce the polymeric materials mentioned above; amides of orthotitanic acid having the formula Ti(NR2)4 where R is an aliphatic, aromatic, cycloaliphatic or N-cyclic radical and one R may be H (2,579,413); titanium soaps or organic salts (2,132,997 and 2,560,542); salts of oxy-substituted fatty acids (2,044,968); and mixed anhydrides of organic carboxylic acids and orthotitanic acid (2,630,443).ALSO:A lubricating oil composition comprises a synthetic lubricating oil having a viscosity of 30 to 250 SUS/210 DEG F. and containing carbon, hydrogen and oxygen, a base-oil-compatible organic titanium-containing compound other than the reaction product of 1 mole of a titanium tetraester with 1/2 to 4 moles of a C2-C24 glycol, and a base-oil-compatible dicarboxylic acid, the titanium compound and acid being present in an amount at least sufficient to enhance the load-carrying capacity of the composition, e.g. 0.001 to 5% wt. and 0.005 to 1% wt. respectively.  Synthetic oils specified are polyalkylene glycols; polymeric alkylene oxides; polycarbonates; formals and polyformals; polyglycidyl and other ethers; polymethyl, polyethyl and polyphenyl siloxanes; esters, e.g. mono- and di-esters, which may be derived from C8-C24 mono- or C2-C12 di-car boxylic acids and alcohols, glycols, ether glycols or glycerol.  There are many examples of such esters including bis(1H, 1H, 7H, dodecafluoroheptyl)-3-methyl glutarate.  Titaniumcontaining compounds specified are as follows, the numbers in brackets referring to U.S.A. Specifications describing them:-polymers of organic derivatives of orthotitanic acid, e.g. the tetraesters, mixed anhydrides and tetraamides and -imides (2,689,858); polymeric mixed esters of orthotitanic acid (2,614,112); polymers of organo-, mono- and di-chlorotitanates (2,727,918); polymeric titanium carboxylates (2,621,195); reaction products of aliphatic carboxylic acids with esters of orthotitanic acid (2,621,193) or a titanium tetrahalide (2,621,194); acidolysis reaction products of polymeric titanium acylates and a carboxylic acid (2,708,203); vinyl esters of titanium and their polymers (2,708,205); monomeric or polymeric reaction products of a titanium tetraester and a glycol other than those described in Specification 866,053 (using 1/2 to 4 moles of a C2-C24 per mole of tetraester); titanium chelates, e.g. titanium ethyl acetoacetate, titanium N,N1-ethylene-imine - bis - acetylacetonate, titanium acetylacetonate, titanium acetoacetanilide, and titanium acetoacet-o-toluidide; reaction products of a tetravalent titanic acid halide or ester with an aldehyde, keto-alcohol or dicarbonyl compound (2,680,108); the monomeric titanium compounds used to produce the polymeric materials mentioned above: amides of orthotitanic acid having the formula Ti(NR2)4 where R is an aliphatic, aromatic, cycloaliphatic or N-cyclic radical and one R may be H (2,579,413); titanium soaps or organic salts (2,132,997 and 2,560,542); salts of oxysubstituted fatty acids (2,044,968); and mixed anhydrides of organic carboxylic acids and orthotitanic acid (2,630,443).  The preferred dicarboxylic acids contain 20 or 2 to 12 carbon atoms.  The composition may contain other additives but tricresyl phosphate adversely affects the effectiveness of the titanium additive.  In the examples the oil is either a polyalkylene glycol or an ester and contains sebacic acid, phenothiazine, and various titanium compounds from the above classes.