Patent ID: 9180345
Filing Date: 2015-11-10
Classification: A63B,C09J

Abstract:
1. A golf ball comprising: a first layer constituting a portion of the main body of the golf ball; a second layer, also constituting a portion of the main body of the golf ball, of which a material differs from a material of the first layer; and an adhesive layer formed from an adhesive and positioned between the first layer and the second layer, wherein a base polymer of the adhesive is a two-component curing type epoxy resin obtained by curing a bisphenol A type epoxy resin with a curing agent including a polyamine compound having an active hydrogen atom, wherein the weight of the active hydrogen equivalent of the curing agent is equal to or greater than 100 g/eq but equal to or less than 800 g/eq, a ratio of the weight of one equivalent of epoxy of the bisphenol A type epoxy resin to the weight of one equivalent of active hydrogen of the curing agent in the adhesive being equal to or greater than 2.0/1.0 but equal to or less than 12.2/1.0, and a gel fraction of the adhesive is equal to or greater than 45% but equal to or less than 76%.