Patent ID: 9376556
Filing Date: 2016-06-28
CPC Classification: A63B,C08L

Claim Text:
1. A multi-layered golf ball comprising a core and a cover covering the core, wherein the core comprises a triple core including: an inner core; an outer layer having a lower hardness than that of the inner core; and a binder layer bonding the inner core to the outer layer, the binder layer having a greater hardness than that of the outer layer, wherein the binder layer comprises 10 to 60 parts by weight of ultra high molecular weight polyolefin having a weight average molecular weight of 2,000,000 to 9,000,000, with respect to 100 parts by weight of a base rubber, wherein the binder layer further comprises 1 to 20 parts by weight of unsaturated carboxylic acid ester with respect to 100 parts by weight of the base rubber, wherein the unsaturated carboxylic acid ester comprises a mixture of unsaturated carboxylic acid ester having a relatively high boiling point and unsaturated carboxylic acid ester having a relatively low boiling point.