Method for producing golf ball
US7794641B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 29, 2009 |
| Grant date | Sep 14, 2010 |
| Priority date | — |
| Expiry date | Jul 29, 2029 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/545
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method of manufacturing golf balls composed of a core and a cover of one or more layer that encloses the core, at least one cover layer being made of a thermoplastic polyurethane composition characterized by including at least 90 wt % of a thermoplastic polyurethane obtained by a polyurethane-forming reaction of an organic diisocyanate compound with a long-chain polyol and a chain extender, which thermoplastic polyurethane composition cover layer has an inherent viscosity in a DMF solvent of larger than 1.5 dl/g and an inherent viscosity in a 0.05 mol/L n-butylamine-containing DMF solution of larger than 0.5 dl/g, the golf ball manufacturing method being characterized by:
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.