Polyurethane elastomer and non-pneumatic tire fabricated therefrom
AssigneeUniroyal Chemical Company, Inc.
InventorVincent J. Gajewski
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Abstract
A polyurethane elastomer exhibiting superior flex fatigue properties is obtained by reacting a mixture of isocyanate-terminated polyether prepolymers with at least one alkylthioaromatic amine curing agent. Optionally, the elastomer can be postcured for further improvement of its properties. The polyurethane elastomer can be utilized for the fabrication of a non-pneumatic tire.
Claims58
A polyurethane elastomer obtained by reacting (a) a mixture of isocyanate-terminated polyether prepolymers formed from the reaction of (i) a first polyether having a molecular weight of from about 200 to about 1500 and terminated with functional groups containing active hydrogen, (ii) a second polyether having a molecular weight of from above about 1,500 to about 6,500 and terminated with functional groups containing active hydrogen and (iii) a multifunctional isocyanate and (b) alkylthioaromatic amine curing agent having at least two amino groups under polyurethane elastomer-forming conditions.
A non-pneumatic tire comprising a compression-deformable, load-carrying annular body fabricated from polyurethane elastomer obtained by reacting (a) a mixture of isocyanate-terminated polyether prepolymers formed from the reaction of (i) a first polyether having a molecular weight of from about 200 to about 1500 and terminated with functional groups containing active hydrogen, (ii) a second polyether having a molecular weight of from above about 1,500 to about 6,500 and terminated with functional groups containing active hydrogen and (iii) a multifunctional isocyanate and (b) alkylthioaromatic diamine curing agent under polyurethane elastomer-forming conditions.
Dependencies are inferred from the claim text.