Patent ID: 6210295
Filing Date: 2001-04-03
Classification: A63B,C08G,C09D

Abstract:
A golf ball having an outermost layer of a coating film formed from a polyurethane clear top coat comprising:(A) a polyol component containing a polyurethane polyol having terminal hydroxyl groups and urethane bonds in the main chain thereof, said polyurethane polyol being formed from a diisocyanate compound and a hydroxyl group-containing compound and having a hydroxyl value of 46.6 to 100 mgKOH/g when the non-volatile content is 100% by weight, a concentration of urethane group of 1 to 5 millimoles/g and a weight average molecular weight of 10,000 to 50,000, and(B) a yellowing resistant polyisocyanate, wherein the NCO/OH equivalent ratio of isocyanate group in said component (B) to hydroxyl group in said component (A) is from 0.7/1.0 to 2.0/1.0.