Golf ball
US9457234B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 3, 2013 |
| Grant date | Oct 4, 2016 |
| Priority date | — |
| Expiry date | Oct 3, 2033 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B45/00
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
An object of the present invention is to provide a golf ball showing a great flight distance on driver shots. The present invention provides a golf ball comprising a spherical core and at least one cover layer covering the spherical core, wherein the spherical core is formed from a rubber composition containing (a) base rubber, (b) an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms and/or a metal salt thereof as a co-crosslinking agent, (c) a crosslinking initiator and at least one compound of (d) thiobenzoic acids and/or salts thereof, provided that the rubber composition further contains (e) a metal compound in case of containing only (b) the α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms as the co-crosslinking agent, and the spherical core has a hardness difference (Hs−Ho) between a surface hardness (Hs) and a center hardness (Ho) thereof of 25 or more in JIS-C hardness.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.