초록 ▼

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 sa

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.

대표청구항 ▼

1. 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 polym

1. 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; andH) 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. 2. The aqueous liquid lubricant composition of claim 1, wherein A) comprises 2-15 wt % on a dry solids basis of a polyethylene dispersion,B) comprises 2-20 wt % of soluble acid phosphate salts;C) comprises 0.1-1.0 wt % of a surfactant;D) comprises 0.5-1.0 wt % cellulosic thickener;E) comprises 0.0-4.0 wt % graphite and/or 0.0-2.0 wt % MoS2;F) comprises 0.0-1.0 wt % defoamer. 3. The aqueous liquid lubricant composition of claim 1, further comprising (H) 1.0-10.0 wt % of a liquid aliphatic hydrocarbon having a viscosity of 5-1000 cps. 4. The aqueous liquid lubricant composition of claim 1, wherein (B) comprises at least one of monoammonium phosphate and monosodium phosphate. 5. The aqueous liquid lubricant composition of claim 1, comprising a surfactant in an amount effective to promote uniform application of the composition to the substrate. 6. A method of forming a combined passivate and lubricating coating on a metal substrate with which the composition has been brought into contact, the method comprising coating the metal substrate with the composition of claim 1 at ambient temperature and drying the composition on the metal substrate such that a passivate coating forms on the metal substrate during drying. 7. The method of claim 6 further comprising heating the composition at a temperature between about 170 to 250 degrees F. to accelerate the drying of the composition and to promote chemical reaction among non-volatile components and the metal substrate. 8. A metal substrate having a combined passivate and lubricating coating thereon comprising reaction products of the metal substrate and the composition of claim 1. 9. A process of making a formed metal workpiece having a passivate film thereon, comprising: A) coating a blank metal workpiece with a lubricant composition of claim 1 at 40 to 100 degrees Fahrenheit;B) drying the lubricant composition on the blank metal workpiece to form a dry film lubricant thereon;C) forming the blank metal workpiece thereby generating a formed metal workpiece having a passivate film thereon. 10. The process of claim 9, wherein the passivate film is generated either by heating the workpiece after step A) or by the forming step C). 11. 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; andH) 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. 12. The aqueous liquid lubricant composition of claim 11, wherein: A) comprises 2-15 wt % on a dry solids basis of a polyethylene dispersion,B) comprises 4-20 wt % of soluble phosphoric acid salts;C) comprises 0.1-1.0 wt % of a surfactant;D) comprises 0.5-1.0 wt % cellulosic thickener;E) comprises 0.0-4.0 wt % graphite and/or 0.0-2.0 wt % MoS2;F) comprises 0.0-1.0 wt % defoamer. 13. The aqueous liquid lubricant composition of claim 11, wherein A) is selected from polyethylene dispersions, polyvinyl alcohols, polyvinylpyrrolidones, acrylic polymers, vinyl acetate polymers, epoxy polymers, urethane polymers, and phenolic polymers. 14. The aqueous liquid lubricant composition of claim 11, wherein the soluble phosphoric acid salts comprise ammonium dihydrogen phosphate and/or an alkali metal dihydrogen phosphate. 15. The aqueous liquid lubricant composition of claim 11, wherein C) comprises: (1) 0.1-1.0 wt % of a surfactant comprising molecules corresponding to formula I: (CnH2n+1)O(C2H4O)mH  (I)where n=9, 10, or 11; and m=4, 5, 6, 7 or 8; and(2) 0.1 to 2.0 wt % of a second surfactant, different from 1). 16. The aqueous liquid lubricant composition of claim 11, wherein the oxidatively labile groups are selected from the group consisting of ketones, aldehydes, carboxyl groups, ether linkages, ester linkages, and non-aromatic unsaturation.