Patent ID: 7244695

Claim:
A method of controlling rail wear, rail car wheel wear, or both, comprising applying a high positive friction (HPF) composition to one or more than one contacting surface of one, or more than one rail, or one, or more than one rail car wheel, the one, or more than one rail, and the one, or more than one rail car wheel being in sliding or sliding-rolling contact, wherein the HPF composition comprises: (a) from about 30 to about 95 percent water; (b) from about 0.5 to about 50 percent of a rheological control agent; (c) from about 0.02 to about 40 weight percent of a lubricant, and (d) from about 0.5 to about 30 weight percent of a friction modifier, and one, or more than one of: (i) from about 0.5 to about 40 weight percent of a retentivity agent; (ii) from about 0.5 to about 2 weight percent of an antioxidant; (iii) from about 0.1 to about 20 weight percent of a consistency modifier, and (iv) from about 10 to about 30 weight percent of a freezing point depressant.