Lubrication for cold forming of metals
AssigneeHenkel Corporation
InventorPeter F. King
Life of this patent
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Abstract
An effective lubricant for cold working of metals is provided by a combination of a water soluble copolymer of styrene with maleic anhydride, maleic acid, and/or an ammonium or substituted ammonium maleate salt with an ethoxylated alcohol, preferably an alcohol with at least 40 carbon atoms before ethoxylation and about 50% of its mass in the polyoxyethylene block in the molecule.
Claims20
A liquid composition of matter consisting essentially of:
- (A) copolymers of styrene with a maleic compound selected from the group consisting of (i) maleic anhydride, (ii) maleic acid, (iii) salts of maleic acid with ammonia, alkali metal hydroxides, and amines, and (iv) mixtures of any two or more of said (i), (ii), and (iii), said copolymers containing a sufficient number of salt groups to be soluble or dispersible in water;
- and
- (B) a component consisting of ethoxylated alcohol molecules having a chemical structure that is produced by condensing ethylene oxide with primary straight chain aliphatic precursor alcohols that have only one hydroxyl group and from 30 to about 65 carbon atoms per molecule, wherein the ratio by weight of component (A) to component (B) is in the range from about 6:1 to about 1:6;
- and, optionally,
- (C) water;
- and, optionally,
- (D) an extreme pressure resistant and corrosion resistant additive component;
- and, optionally,
- (E) a component selected from solid and liquid hydrocarbons.
A process for cold working a metal substrate, wherein the improvement comprises the presence during the cold working on the surfaces of the metal substrate being cold worked of a lubricating composition consisting essentially of:
- (A) copolymers of styrene with a maleic compound selected from the group consisting of (i) maleic anhydride, (ii) maleic acid, (iii) salts of maleic acid with ammonia, alkali metal hydroxides, and amines, and (iv) mixtures of any two or more of said (i), (ii), and (iii), said copolymers containing a sufficient number of salt groups to be soluble or dispersible in water;
- and
- (B) a component consisting of ethoxylated alcohol molecules having a chemical structure that is produced by condensing ethylene oxide with primary aliphatic precursor alcohols that have only one hydroxyl group and from 30 to about 65 carbon atoms per molecule, wherein the ratio by weight of component (A) to component (B) is in the range from about 6:1 to about 1:6;
- and, optionally,
- (C) water;
- and, optionally,
- (D) an extreme pressure resistant and corrosion resistant additive component;
- and, optionally,
- (E) a component selected from solid and liquid hydrocarbons.
Dependencies are inferred from the claim text.