The Lubrizol Corporation

John Bretz

William A Higgins

Leonard S Cech

The present invention relates to modified non-Newtonian colloidal disperse systems exhibiting improved thickening power, particularly when diluted. These compositions are useful as high-solids, thermosetting caulks, molding compositions, extruding compositions and the like, but are particularly suitable for use as high solids thermosetting coating compositions. These coating compositions are heat-stable and sag-resistant. The compositions of this invention comprise a mixture of

Compositions containing basic metal salts and/or non-Newtonian colloidal

Water-based metal-containing organic phosphate compositions which are useful as corrosion-inhibiting coating compositions, metal working lubricants and drilling fluids for well-drilling operations are disclosed. These compositions comprise: (A) water or an aqueous drilling mud; (B) an overbased non-Newtonian colloidal disperse system comprising (B)(1) solid metal-containing colloidal particles predispersed in (B)(2) a dispersing medium of at least one inert organic liquid and (B)(3) at least one member selected from the class consisting of organic compounds which are substantially soluble in said dispersing medium, the molecules of said organic compound being characterized by polar substituents and hydrophobic portions; and (C) a metal-containing organic phosphate complex derived from the reaction of (C)(1) at least one polyvalent metal salt of an acid phosphate ester, said acid phosphate ester being derived from the reaction of phosphorus pentoxide or phorphoric acid with a mixture of at least one monohydric alcohol and at least one polyhydric alcohol, with (C)(2) at least one organic epoxide. These compositions preferably include an effective amount of (D) an alkali or an alkaline earth metal salt of an organic acid, (E) a carboxylic acid and (F) an N-(hydroxyl-substituted hydrocarbyl) amine to enhance the dispersion of components (B) and (C) with said water or drilling mud (A).

Water-based metal-containing organic phosphate compositions

Water-based metal-containing organic phosphate compositions which are useful as corrosion-inhibiting coating compositions, metal working lubricants and drilling fluids for well-drilling operations are disclosed. These compositions comprise: (A) water or an aqueous drilling mud; (B) an overbased non-Newtonian colloidal disperse system comprising (B)(1) solid metal-containing colloidal particles predispersed in (B)(2) a dispersing medium of at least one inert organic liquid and (B)(3) at least one member selected from the class consisting of organic compounds which are substantially soluble in said dispersing medium, the molecules of said organic compound being characterized by polar substituents and hydrophobic portions; and (C) a metal-containing organic phosphate complex derived from the reaction of (C)(1) at least one polyvalent metal salt of an acid phosphate ester, said acid phosphate ester being derived from the reaction of phosphorus pentoxide or phosphoric acid with a mixture of at least one monohydric alcohol and at least one polyhydric alcohol, with (C)(2) at least one organic epoxide. These compositions preferably include an effective amount of (D) an alkali or an alkaline earth metal salt of an organic acid, (E) a carboxylic acid and (F) an N-(hydroxyl-substituted hydrocarbyl) amine to enhance the dispersion of components (B) and (C) with said water or drilling mud (A).

Metal-containing organic flow-modifying agents comprising a major proportion of a non-Newtonian colloidal disperse system containing metal-containing particles, dispersing medium and an organic compound having both a hydrophobic and a polar substituent and a minor proportion of polymeric resin which is present as a random dispersion of particles in a non-solvated form are useful in modifying the flow properties of plastic materials. Specific examples of the disperse system are those comprising calcium carbonate particles dispersed in a mineral oil dispersing medium in the presence of a calcium petrosulfonate; an example of the resin is finely divided polyethylene. These agents are useful for modifying the flow properties of plastic materials such as filled asphalt systems.

Flow-modifying agents for plastic materials

Aqueous well-drilling fluids treated with additives comprising a non-Newtonian colloidal disperse system containing metal-containing particles, a dispersing medium and an organic compound having both a hydrophobic and a polar substituent in combination with at least one emulsifier are disclosed. Specific examples of the disperse system comprise calcium carbonate particles predispersed in a mineral oil dispersing medium in the presence of a calcium petrosulfonate; useful emulsifiers include alkylene oxide/fatty amine condensates. Well-drilling fluids containing such additives reduce the torque requirements in rotary drilling operations.

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Parma, OH, United States of America

John Bretz