Urethane elastomers with improved color stability
US7148278B2 · kind B2 · utility
16Cited by
26References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 25, 2003 |
| Grant date | Dec 12, 2006 |
| Priority date | — |
| Expiry date | Sep 16, 2023 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L21/00
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A golf ball including a center, a cover, and, optionally, at least one intermediate layer disposed between the center and the cover, wherein the cover is formed from a polyurethane composition, or a reaction product thereof, including at least one polyol; at least one polyisocyanate; at least one curing agent; and at least one color stabilizer; wherein the color stabilizer is present in an amount sufficient to provide a ΔC* of less than about 22 upon exposure to UV light over a timeframe of 1 hour.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.