Golf ball
US11731006B2 · kind B2 · utility
0Cited by
2References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 18, 2019 |
| Grant date | Aug 22, 2023 |
| Priority date | — |
| Expiry date | May 30, 2040 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B37/0031
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An object of the present invention is to provide a novel golf ball having excellent spin performance on approach shots. The present invention provides a golf ball comprising a golf ball body and a paint film composed of at least one layer and formed on a surface of the golf ball body, wherein a base resin constituting an outermost layer of the paint film is a polyurethane obtained by a reaction between (A) a polyol composition and (B) a polyisocyanate composition, and a loss modulus (E″) at the temperature of −50° C. obtained by measuring a dynamic viscoelasticity of the polyurethane is 1.00×108 Pa or more.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.