High friction polyurethane elastomers having improved abrasion resistance
AssigneeUniroyal Chemical Company, Inc.
InventorsRichard L. Palinkas, Thomas H. Peter
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Abstract
A composition of matter is disclosed wherein the composition comprises a polyurethane elastomer prepared by mixing A) a polyurethane prepolymer, B) a curative, and C) a liquid, non-reactive polydimethylsiloxane, wherein C) is present in a concentration of about 0.5 to about 25% based on the combined weight of A) plus B), and curing the mixture to form the elastomer.
Claims19
A composition of matter comprising a polyurethane elastomer having improved abrasion resistance with no significant loss in friction prepared by mixing
- A) a polyurethane prepolymer,
- B) a curative, and
- C) a liquid, non-reactive polydimethylsiloxane,
- wherein C) is present in a concentration of about 0.5 to about 25% based on the combined weight of A) plus B),
- and curing the mixture to form the elastomer.
A method for producing a polyurethane elastomer comprising the steps of:
- A) mixing:
- 1) a polyurethane prepolymer,
- 2) a curative, in sufficient amount to cure the polyurethane prepolymer, and
- 3) a non-reactive, liquid polydimethylsiloxane,
- wherein 3) is present in a concentration of from about 0.5% to about 25% based on the weight of 1) plus 2), and
- B) curing the polyurethane prepolymer to yield an elastomer having improved abrasion resistance with no significant loss in friction.
An article of manufacture comprising a polyurethane elastomer and about 0.5% to about 25% based on the weight of the elastomer of a non-reactive, liquid polydimethylsiloxane, whereby the abrasion resistance of the article is improved with no significant loss in friction.
Dependencies are inferred from the claim text.