| 摘要 |
<p>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 20 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 is from 0.7/1.0 to 2.0/1.0. The golf ball has excellent scratch resistance, weatherability and surface durability, and the golf ball which is hard to generate scratch, face cuts and cracks when struck with an iron club can be produced in good coating workability.</p> |
