Golf ball
US5994470A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 8, 1995 |
| Grant date | Nov 30, 1999 |
| Priority date | — |
| Expiry date | Dec 8, 2015 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B37/0075
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
Disclosed is a golf ball having excellent shot feel, control properties as well as satisfactory flight performance and cut resistance. The golf ball of the present invention has a core and a cover for covering the core, wherein the cover has a stiffness modulus of 100 to 250 MPa, and is prepared from a resin composition comprising, as a base resin, a mixture of the following resin (A) and resin (B) in a weight ratio of 60:40 to 90:10: PA1 resin (A): an ionomer resin (i) obtained by neutralizing with metal ion at least a part of carboxyl groups in a copolymer of ethylene and an .alpha., .beta.-unsaturated carboxylic acid, or a mixture of the ionomer resin (i) and an ionomer resin (ii) obtained by neutralizing with metal ion at least a part of carboxyl groups in a terpolymer of ethylene, an .alpha., .beta.-unsaturated carboxylic acid and an .alpha., .beta.-unsaturated carboxylate, and PA1 resin (B): a thermoplastic elastomer comprising a polyamide portion as a hard segment, having a Shore D hardness of 20 to 40 and a stiffness modulus of 10 to 50 MPa.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.