GB677377A - Process of preparing oil soluble metal soaps - Google Patents

Abstract

Oil-soluble polyvalent metal soaps are made by a hydrous two-phase metal-acid fusion process which comprises commingling at least one comminuted polyvalent metal, at least one organic acid capable of forming water-insoluble, oil-soluble heavy metal soaps, and a quantity of water to produce a reaction mass, and heating the mass to effect reaction thereof to a temperature above 100 DEG F. under conditions to maintain the water in its liquid phase throughout the reaction while agitating the mass. Many acids are specified, representative being oleic, naphthenic, nonanoic, phenyl, stearic, linseed oil fatty, tall oil and petroleum sulphonate acids. Naphthenic, tall oil and 2-ethylhexoic acids are preferred. Specified metals are lead, cobalt, iron, manganese, copper, zinc, nickel, aluminium and strontium. The metal is preferably powdered. Water immiscible solvents, e.g. mineral spirits and xylol, may be present in the reaction mass and modifying agents, c.f. Specifications 493,878, [Group II], and 641,168, [Group III], to reduce the viscosity of the end product or to serve as antioxidants and stabilizers may be added before, during or after the reaction to modify the properties of the end products. In examples the following salts are made:- cobalt, manganese, copper, iron, zinc and lead naphthenates, cobalt, manganese, copper and iron tallate, cobalt, manganese, iron, lead and zinc 2-ethylhexoates, manganese and zinc nonanates, lead basic naphthenate and basic tallate, copper oleate mixed tallates and naphthenates of cobalt and manganese, lead-cobalt salts of mixed 2-ethyl hexoic and naphthenic acids and a lead-cobalt salt of naphthenic acid. A cobalt naphthenate containing triethanolamine lactate and amyl acid phosphate and a manganese naphthenate containing isobutyl acid phosphate are also made. It is stated that amyl acid phosphate, triethyl citrate and tributyl citrate may be used instead of isobutyl acid phosphate.