Golf ball

Details Golf ball Golf ball

1995-04-19

1997-02-25

Secouro, Jr., Carman J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525196, 473385, 273DIG22, A63B 3712, C08L 2326, C08L 3302

Patent

active

056059671

ABSTRACT:
In a golf ball comprising a cover enclosing a core, the cover is formed of a resin blend of (a) a potassium ionomer resin and (b) a magnesium ionomer resin. Both the ionomer resins are ethylene-.alpha., .beta.-unsaturated carboxylic acid copolymers containing 10 to 20% by weight of .alpha., .beta.-unsaturated carboxylic acid, 20 to 70 mol % of the carboxyl group being neutralized with potassium or magnesium ion. The ionomer resins have a melt index of 0.6 to 8 and a Shore D hardness of 55 to 70. Ionomer resins (a) and (b) are blended in a weight ratio of from 85:15 to 20:80. The cover has enhanced durability against hitting at no expense of repulsion upon hitting.

REFERENCES:
patent: 4984804 (1991-01-01), Yamada et al.
patent: 5068151 (1991-11-01), Nakamura

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