Lubricant coating compositions for use in metal drawing operations
AssigneeExxon Research & Engineering Co.
InventorJames H. Norton
Life of this patent
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Abstract
A coating composition useful in metal working processes comprises a major amount of a mineral oil having a viscosity of 100.degree.F of at least 100 SUS and (a) 1.0 to 20.0 parts by weight of a paraffin wax, (b) 0.1 to 10.0 parts by weight of a polymeric wax modifier and (c) 0.1 to 10.0 parts by weight of an extreme pressure agent. The compositions can also contain one or more rust inhibitors. Particularly preferred classes of extreme pressure agents for use in this comparison are sulfur containing agents and zinc salts of dialkyl dithiophosphates.
Claims8
In a lubricant composition suitable for use in metal drawing operations which comprises a major amount of a mineral oil having a viscosity at 100.degree.F. of at least 100 SUS and, based on the weight of the total composition, 1.0 to 20.0 weight percent of a petroleum paraffin wax having a melting point of 120.degree. to 200.degree.F. and 0.1 to 10.0 weight percent of an extreme pressure agent, the improvement wherein said composition also comprises from 0.1 to 10.0 weight percent, based on the weight of the total composition, of a wax crystal modifier selected from the group consisting of:
- a. alkylated naphthalenes;
- b. polymers and copolymers of oil soluble alkyl unsaturated esters characterized by the formula:
- ##EQU1## wherein R.sub.1 is hydrogen or a C.sub.1 to C.sub.4 alkyl group, R.sub.2 is a --COOR.sub.4 or --OOCR.sub.4 group wherein R.sub.4 is a C.sub.6 to C.sub.20 straight chain alkyl group and R.sub.3 can be hydrogen or --COOR.sub.4, said polymers having a number average molecular weight in the range of about 1000 to 200,000;
- and
- c. copolymers of ethylene and unsaturated ketones.
A lubricating oil composition suitable for use in metal drawing operations containing a major amount of a mineral oil having a viscosity of more than 100 SUS at 100.degree.F. and, based on the weight of the total composition, 1.0 to 20.0 weight percent of a wax having a melting point of 120.degree. to 200.degree.F., 0.5 to 20.0 weight percent of a rust inhibitor and 0.1 to 10.0 weight percent of an extreme pressure agent, the improvement wherein said composition also comprises 0.1 to 10.0 weight percent of a lube oil pour depressant selected from the group consisting of:
- a. alkylated naphthalenes;
- b. polymers and copolymers of oil soluble alkyl unsaturated esters characterized by the formula:
- ##EQU2## wherein R.sub.1 is hydrogen or a C.sub.1 to C.sub.4 alkyl group, R.sub.2 is a --COOR.sub.4 or --COOR.sub.4 group wherein R.sub.4 is a C.sub.6 to C.sub.20 straight chain alkyl group and R.sub.3 can be hydrogen or --COOR.sub.4, said polymers having a number average molecular weight in the range of about 1000 to 200,000;
- and
- c. copolymers of ethylene and unsaturated ketones.
Dependencies are inferred from the claim text.