Back to results
US 8,541,350 B2Granted
Dry-film, anti-corrosive cold forming lubricant
AssigneeHenkel AG & Co. KGaA
InventorsGabriel J. Kirsch, Paul B. Kutzko
Life of this patent
Estimating the term…
Abstract
The invention provides a lubricant composition for generating a combined passivate and lubricating coating on a metal substrate with which the composition is brought into contact. The lubricant composition comprises an organic polymer and/or a wax dispersion; phosphates, preferably acid phosphate salts, and/or phosphoric acid; and optionally, a surfactant, a thickening aid, an anti-wear additive, a defoaming agent; a corrosion inhibitor; and/or a linear or branched hydrocarbon.
Claims16
An aqueous liquid lubricant composition comprising:
- A) At least one organic polymer and/or a wax dispersion, A) being selected from the group consisting of polyethylene dispersions, polyvinyl alcohols, polyvinylpyrrolidones, acrylic polymers, vinyl acetate polymers, epoxy polymers, urethane polymers, and phenolic polymers;
- B) At least one water soluble phosphate salt and/or phosphoric acid, said salt being present in an amount up to solubility limits of the salt;
- C) optionally, at least one surfactant;
- D) optionally at least one thickening aid;
- E) optionally, at least one anti-wear additive;
- F) optionally, at least one defoaming agent;
- G) optionally, at least one corrosion inhibitor;
- and
- H) optionally, at least one liquid linear or branched hydrocarbon different from A);
- wherein the composition has a pH of at least about 3.0 and not more than 6.5, and the weight ratio of (A) to (B) ranges from about 10 to about 0.1.
7 more elements
An aqueous liquid lubricant working bath composition comprising:
- A) At least one organic polymer and/or a wax dispersion, said at least one organic polymer and/or a wax dispersion being free from oxidatively labile groups;
- B) At least one soluble inorganic phosphoric acid salt and/or phosphoric acid said salt being present in an amount of at least 4 wt % and up to solubility limits of the salt;
- C) optionally, at least one surfactant;
- D) optionally at least one thickening aid;
- E) optionally, at least one anti-wear additive;
- F) optionally, at least one defoaming agent;
- G) optionally, at least one corrosion inhibitor;
- and
- H) optionally, at least one liquid linear or branched hydrocarbon different from A);
- wherein pH of the composition ranges from at least about 3.0 to not more than 6.5.
7 more elements
Dependencies are inferred from the claim text.