Two-piece solid golf balls

Details Two-piece solid golf balls Two-piece solid golf balls

A - Human Necessities

63

B

273/178

A63B 37/00 (2006.01) B29D 99/00 (2010.01) C08K 5/103 (2006.01)

Patent

CA 1081275

Abstract of the Disclosure Two-piece solid golf balls having an improved initial velocity are disclosed. The core is obtained by curing a composition comprising (a) 100 parts by weight of polybutadiene, (b) 9-20 parts by weight of a polyfunctional unsaturated ester, (c) 5-10 parts by weight of methacrylic acid and/or acrylic acid, the total amount of the ingredients (b) and (c) being 15-30 parts by weight and the weight ratio of the ingredient (b)/the ingredient (c) being 55/45-80/20, (d) 20-80 parts by weight of a zinc compound and (e) 0.5- 5 parts by weight of an alkyl peroxide. The cover comprises (f) 100 parts by weight of a metal salt of a copolymer of ethylene and unsaturated carboxylic acid, said metal salt having a loss tangent of lower than 0.08, and (g) 1-5 parts by weight of an inorganic filler.

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