Dry wire drawing lubricants based on Poly (3,5-dithio-1,2,4-thiadiazole) and Poly (2,5-dithio-1,3,4-thiadiazole)
AssigneePennwalt Corporation
InventorsAlan D. Eckard, James P. King
Life of this patent
Estimating the term…
Abstract
Dry powdered wire drawing lubricant compositions are disclosed for the most severe drafting conditions in which mixtures of polymers of Poly (3,5-dithio-1,2,4-thiadiazole) and Poly (2,5-dithio-1,3,4-thiadiazole) act synergistically with molybdenum disulfide as extreme pressure additives. The polymers of Poly(3,5-dithio-1,2,4-thiadiazole) and Poly(2,5-dithio-1,3,4-thiadiazole) can also be used as the sole extreme pressure additive in the wire drawing lubricants.
Claims17
A synergistic wire drawing composition comprising the following members expressed in percent by weight:
- from 10 to 85% of one or more fatty acid compounds, from 1 to 10% sulfur, from 0 to 85% of one or more fatty acid soap forming reactants selected from the group consisting of lime, calcium carbonate, sodium carbonate, sodium hydroxide, potassium carbonate and potassium hydroxide, from 0 to 85% of one or more members selected from the group consisting of fillers, thickeners and viscosity modifiers, from 0 to 10% glycerin and from 0.1 to 25% of a mixture of 1 to 99% molybdenum disulfide and 99 to 1% or one or more polymers having the structure:
- ##STR4## wherein:
- R is selected from the group consisting of ##STR5## phenylene, biphenylene and alkylene of 2-50 carbons, cyclic alkylene of 5-50 carbons, wherein the alkylene or cyclic alkylene can contain in the chain or ring oxygen and/or sulfur atoms, or (S).sub.x --groups;
- m is an integer of 0-10,
- n is an integer of 5-100, and
- x is an integer of 1-5.
A synergistic wire drawing composition comprising the following members expressed in percent of weight:
- from 20 to 50% of one or more fatty acid compounds, from 2 to 6% sulfur, from 15 to 80% of one or more fatty acid soap forming reactants selected from the group consisting of lime, calcium carbonate, sodium carbonate, sodium hydroxide, potassium carbonate and potassium hydroxide, from 0 to 85% of one or more members selected from the group consisting of fillers, thickeners and viscosity modifiers, from 2 to 8% glycerin and from 2 to 10% of a mixture of 1 to 99% molybdenum disulfide and 99 to 1% of one or more polymers having the structure:
- ##STR6## wherein:
- R is selected from the group consisting of ##STR7## phenylene, biphenylene and alkylene of 2-50 carbons, cyclic alkylene of 5-50 carbons, where the alkylene or cyclic alkylene can contain in the chain or ring oxygen and/or sulfur atoms, or (S).sub.x -groups;
- m is an integer of 0-10,
- n is an integer of 5-100, and
- x is an integer of 1-5.
A synergistic wire drawing composition comprising the following members expressed in percent of weight:
- from 10 to 85% of one or more fatty acid compounds, from 1 to 10% sulfur, from 15 to 80% of one or more fatty acid soap forming reactants selected from the group consisting of lime, calcium carbonate, sodium carbonate, sodium hydroxide, potassium carbonate and potassium hydroxide of which at least 10% is sodium or potassium salts;
- from 0 to 85% of one or more members selected from the group consisting of fillers, thickeners and viscosity modifiers, from 0 to 10% glycerin and from 0.1 to 25% of a mixture of 1 to 99% molybdenum disulfide and 99 to 1% of one or more polymers having the structure:
- ##STR8## wherein:
- R is selected from the group consisting of ##STR9## phenylene, biphenylene and alkylene of 2-50 carbons, cyclic alkylene of 5-50 carbons, wherein the alkylene or cyclic alkylene can contain in the chain or ring oxygen and/or sulfur atoms, or (S).sub.x -groups;
- m is an integer of 0-10,
- n is an integer of 5-100, and
- x is an integer of 1-5.
Dependencies are inferred from the claim text.