Tire having polyurethane laminate thereon
AssigneeThe Goodyear Tire & Rubber Company
InventorsCharles J. Pearson, Jeffrey W. Saracsan
Life of this patent
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Abstract
A tire comprised of a composite structure of a cured rubber tire having adhered thereto a laminate of a cured polyurethane. Said laminate is prepared by (A) applying to the cured rubber tire a solution of a reaction mixture comprised of (i) an aliphatic primary diamine, (ii) a specified prepolymer utilizing a polycaprolactone polyol, and (iii) an organic solvent followed by (B) drying and curing the applied solution.
Claims17
A tire which comprises a composite structure of a cured rubber tire having adhered thereto a laminate of a cured polyurethane prepared by (A) applying to a cured rubber tire a solution of a reaction mixture comprised of (i) an aliphatic primary diamine, (ii) a prepolymer prepared by reacting an organic polyisocyanate having an isocyanate functionality in the range of about 2 to about 2.8, with a polycaprolactone polyol having a number average molecular weight in the range of about 2500 to about 3700, and an average hydroxy functionality of about 2, and (iii) about 7 to about 90 weight percent organic solvent based on the total of (i, ii and iii), where the mole ratio of isocyanate groups to hydroxyl groups of the polyol is in the range of about 1/1 to about 3/1, and where the mole ratio of amine groups of the diamine to excess isocyanate groups over the hydroxyl groups is in the range of about 0.8/1 to about 1.2/1, and (B) drying and curing the applied solution of reaction mixture to form the composite structure.
Dependencies are inferred from the claim text.