Patent ID: 6037419
Filing Date: 2000-03-14
Classification: A63B,C08L

Abstract:
A golf ball comprising a core and a cover surrounding the core, the cover consisting of an inner cover layer and an outer cover layer, whereinsaid inner cover layer is mainly formed of a diamine complex ionomer resin obtained by reacting a divalent metal ion crosslinked form of an olefin-unsaturated carboxylic acid copolymer with an amine compound having at least two primary or secondary amino groups, andsaid outer cover layer is mainly formed of an ionomer resin or non-ionomer thermoplastic elastomerwherein said inner cover layer is harder than said outer cover layer, said inner cover layer has a Shore D hardness of 60 to 75 and said outer cover layer has a Shore D hardness of 40 to 60.