Stock material or miscellaneous articles – Coated or structually defined flake – particle – cell – strand,... – Particulate matter
Patent
1990-02-02
1991-11-26
Seccuro, Carman J.
Stock material or miscellaneous articles
Coated or structually defined flake, particle, cell, strand,...
Particulate matter
5253302, 525196, 525221, 273235R, B32B 2728, A63B 3712, C08L 3302, C08F22006
Patent
active
050681516
ABSTRACT:
Disclosed is a golf ball having improved impact resilience, which comprises a core and a cover covering the core, wherein the cover is a lithium neutralized ionomer resion which is a copolymer of 10 to 20% by weight of an alpha, beta-unsaturated carboxylic acid and the rest of ethylene, of which 20 to 70 mol % of carboxyl groups are neutralized with lithium ion, and the ionomer resin has a melt index of 0.5 to 5.0 and a shore D hardness of at least 60. The lithium neutralized ionomer resin may be combined with a di- or tri- valent metal neutralized ionomer resin which is a copolymer of 10 to 20% by weight of an alpha, beta-unsaturated carboxylic acid and the rest of ethylene, of which 40 to 70 mol % of carboxyl groups are neutralized with di- or tri- valent metal ion, and which has a melt index of 0.5 to 5.0 and a shore D hardness of 60 to 80.
REFERENCES:
patent: 3264272 (1966-08-01), Rees
patent: 3819768 (1974-06-01), Molitor
patent: 4911451 (1990-03-01), Sullivan et al.
Research Disclosure-Kenneth Mason Publications #27221-"Golf Balls Based on Li Ionomers . . . " 12/1986.
Seccuro Carman J.
Sumitomo Rubber Industries Ltd.
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