| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a two-piece solid golf ball which maintains a good hitting feel, is great in distance during the hitting from middle irons to a driver, and is excellent in controllability during the hitting by shot irons, etc. <P>SOLUTION: The two-piece solid golf ball is a two-piece solid golf ball consisting of a core and a cover; in which the core is a solid core essentially consisting of cis-1,4-polybutadiene; the surface hardness by Shore D hardness is higher by≥15 than the central hardness; the cover is formed of a composition for the cover containing a polyurethane thermoplastic elastomer as an essential component; the hardness by the Shore D hardness is 35 to 55 and is lower than the surface hardness of the core; when the cover hardness is defined as A and the total volume of the dimples as B (mm<SP>3</SP>), the value of the product AB of both is 20,000 to 30,000. <P>COPYRIGHT: (C)2003,JPO</p> |
