| US 7,514,505 B2 | ||
| Golf ball material, golf ball and method for preparing golf ball material | ||
| Yoshinori Egashira, Chichibu (Japan); and Eiji Takehana, Chichibu (Japan) | ||
| Assigned to Bridgestone Sports Co., Ltd., Tokyo (Japan) | ||
| Filed on Aug. 03, 2005, as Appl. No. 11/195,743. | ||
| Claims priority of application No. 2004-228901 (JP), filed on Aug. 05, 2004. | ||
| Prior Publication US 2006/0030668 A1, Feb. 09, 2006 | ||
| This patent is subject to a terminal disclaimer. | ||
| Int. Cl. C08L 33/02 (2006.01); C08L 9/00 (2006.01); A63B 37/00 (2006.01) | ||
| U.S. Cl. 525—196 [525/330.2; 525/368; 525/369; 525/373; 525/78; 525/106; 525/130; 525/154; 525/176; 525/183; 524/424; 524/425; 524/426; 524/427; 524/432; 524/433; 473/373; 473/385] | 20 Claims |
| 1. A golf ball material comprising:
(A) a metal ionic species in a form of (A1) ultrafine particles of an oxygen-containing inorganic metal compound having an
average size of 0.005 to 0.1 μm and a particle size distribution of 0.001 to 1.0 μm in diameter,
(B) at least one polymer selected from the group consisting of diene polymers, thermoplastic polymers and thermoset polymers,
and
(C) at least one acid-containing polymer having an acid content of 0.5 to 30% by weight and selected from the group consisting
of olefin-unsaturated carboxylic acid copolymers, olefin-unsaturated carboxylic acid-unsaturated carboxylic acid ester terpolymers,
and polymers containing one or more monomer selected from the group consisting of unsaturated carboxylic anhydrides, unsaturated
dicarboxylic acids and half esters thereof, the component (C) being un-neutralized;
which is obtained by blending and melt-mixing component B and component C to form a molten polymer composition of components
B and C, then blending component A into the molten polymer composition in which at least some of the acid groups present in
components B and C of the polymer composition are neutralized.
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