Back to results
US 12,378,351 B2Granted
Polyurethane belt with improved hydrolysis resistance
AssigneeThe Gates Corporation
InventorsWilliam W. L. Wu, Joseph R. Duke, Gregory Butorin
Life of this patent
Estimating the term…
Abstract
A belt for power transmission or transport comprising a polyurethane belt body, wherein the polyurethane of the belt body is the reaction product of a urethane prepolymer and a diamine chain extender, and the urethane prepolymer is based on a polyether and a linear aliphatic diisocyanate. The belt has excellent hydrolysis resistance.
Claims14
A belt for power transmission or transport comprising a polyurethane belt body;
- wherein the polyurethane of the belt body is the reaction product of a urethane prepolymer and a diamine chain extender;
- and the urethane prepolymer is based on a polyether and a linear aliphatic diisocyanate, wherein the polyether is polytetramethylene ether glycol (i.e., “PTMEG”) and the linear aliphatic diisocyanate is 1,6-hexamethylene diisocyanate (i.e., “HDI”), wherein the prepolymer has an NCO content in the range from 4% to 8% by weight.
Dependencies are inferred from the claim text.