Railroad lubricating composition
AssigneeTexaco Inc.
InventorsGregory Jude Sedelmeier, Robert Joel Taylor
Life of this patent
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Abstract
A composition for lubricating the top of a rail is disclosed. The composition is composed of: (a) 25 to 45 wt % of a first polyoxyalkylene glycol comprising a linear copolymer of ethylene oxide and propylene oxide copolymer and having an average molecular weight of about 2,500; (b) 0.5 to 3.0 wt % of a second polyoxyalkylene glycol comprising a linear copolymer of ethylene oxide and propylene oxide copolymer and having an average molecular weight of about 12,000; (c) 5 to 35 wt % of a solvent; and (d) a rust inhibitor. Methods of making and using the composition are also disclosed.
Claims16
An aqueous, alcohol free lubricating composition for the top of a rail comprising:
- (a) 25 to 45 wt % of a first polyoxyalkylene glycol comprising a linear copolymer of ethylene oxide and propylene oxide copolymer and having an average molecular weight of about 2,500;
- (b) 0.5 to 3.0 wt % of a second polyoxyalkylene glycol comprising a linear copolymer of ethylene oxide and propylene oxide copolymer and having an average molecular weight of about 12,000;
- (c) 5 to 35 wt % of a solvent;
- (d) a rust inhibitor;
- and the remainder water.
A method of lubricating the top of a rail comprising applying a lubricating effective amount of an aqueous, alcohol free composition comprising:
- (a) 25 to 45 wt % of a first polyoxyalkylene glycol comprising a linear copolymer of ethylene oxide and propylene oxide copolymer and having an average molecular weight of about 2,500;
- (b) 0.5 to 3.0 wt % of a second polyoxyalkylene glycol comprising a linear copolymer of ethylene oxide and propylene oxide copolymer and having an average molecular weight of about 12,000;
- (c) 5 to 35 wt % of a solvent;
- (d) a rust inhibitor;
- and the remainder water.
Dependencies are inferred from the claim text.