Golf ball and method of producing the same
AssigneesSumitomo Rubber Industries, Ltd., Wayaku Paint Co., Ltd.
InventorsKiyoto Maruoka, Kaichiro Wayaku
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Abstract
The present invention provides a method of producing golf balls improved the adhesion between a ball body and a coated film on the ball body without the need of expensive and large scale facilities. The inventive method comprises the steps of: applying an adhesion enhancing agent containing a silyl component and a solvent to a surface of a ball body; drying the coated surface to form an adhesion enhancing layer having the silyl component; and applying a paint to the adhesion enhancing layer. The silyl component is capable of remaining 30 weight % or more after an elapse of one hour at a temperature of 25° C. The method is applicable to the batch operating process of manufacturing golf balls.
Claims7
A method of producing a golf ball comprising the steps of:
- applying an adhesion enhancing agent containing a silyl component and a solvent to a surface of a ball body;
- drying the coated surface to form an adhesion enhancing layer having the silyl component;
- and
- applying a paint to the adhesion enhancing layer;
- wherein the silyl component is capable of remaining 30 percent or more after an elapse of one hour at a temperature of 25° C., and wherein the silyl component includes at least 50% by weight, of a silyl component (P) with respect to a total weight of the silyl component, the silyl component (P) is represented by the following formula (1) and has a weight-average molecular weight of 300 or higher:
- wherein R1 and R2 are the same or different and each represents a saturated alkyl group having 1 to 3 carbon atoms;
- X and Y each represents an organic group having an amino group, an imino group or an epoxy group in a molecule;
- “a” and “c” are integers of 2 or 3 and “b” and “d” are integers of 0 or 1, with a proviso that a, b, c and d satisfy the following relations:
- a+b=3 and c+d=3;
- and “A” is a divalent residue containing at least one selected from an amide group, an oxy group, an imino group, a tertiary amino group and an alkylene group.
A golf ball comprising
- a ball body;
- an adhesion enhancing layer on the ball body which contains a silyl compound (P) represented by the following formula (1) and having a weight-average molecular weight of 300 or higher;
- and
- a coated film coated on the adhesion enhancing layer,
- (wherein R1 and R2 are the same or different and each represents a saturated alkyl group having 1 to 3 carbon atoms;
- X and Y each represents an organic group having an amino group, an imino group or an epoxy group in a molecule;
- “a” and “c” are integers of 2 or 3 and “b” and “d” are integers of 0 or 1, with a proviso that a, b, c and d satisfy the following relations:
- a+b=3 and c+d=3;
- and “A” is a divalent residue containing at one selected from the group consisting of an amide group, an group, an imino group, a tertiary amino group and an alkylene group).
Dependencies are inferred from the claim text.