| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a method of manufacturing golf balls which includes the step of preparing an inorganic filler masterbatch. <P>SOLUTION: The method of manufacturing golf balls includes the steps of pre-preparing an inorganic filler masterbatch by mixing an inorganic filler with a rubber material, preparing a rubber composition that contains the rubber material by using the masterbatch, and employing a material obtained by molding the rubber composition under heat as a golf ball component, wherein the masterbatch is composed of: (A) a modified polybutadiene obtained by a modification reaction wherein a polybutadiene having a vinyl content of from 0 to 2%, a cis-1,4 bond content of at least 80% and an active end is modified at the active end with at least one type of alkoxysilane compound, and (B) a diene rubber other than ingredient (A), and (C) an inorganic filler. The present invention relates to an industrially beneficial method for manufacturing golf balls which has improved dispersibility of the inorganic filler (C) component in a rubber composition for golf balls, and has further enhanced resilience and durability of the rubber molded material. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
