| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a golf ball compositions which can optimize most of the performance properties of a golf ball without making the other properties worse. <P>SOLUTION: The golf balls and compositions to use for ball cores, covers and intermediate layers contain syndiotactic 1,2-polybutadiene having crystallinity and other specific physical properties. The golf balls containing the compositions of the present invention provide flexibility in a golf ball structure and improve ball performance, such as hit feel and spin rate, without adversely affecting shear resistance of the ball. Also, methods for making golf balls include preparing a composition comprising syndiotactic 1,2-polybutadiene having crystallinity and incorporating the composition into the golf ball. The method can include injection molding only, or injection and compression molding. When the composition being molded contains crosslinking agents, hetero- crosslinking agents, or crosslinking accelerators, preferred methods include including partial or total crosslinking of the composition at preferred steps of making the golf balls. <P>COPYRIGHT: (C)2003,JPO</p> |
