US 2024/0390738 A1Published application

Golf ball

AssigneeSumitomo Rubber Industries, Ltd.

InventorsYasuo NAITO, Masayuki ONISHI, Kazuyoshi SHIGA, Hiroaki TANAKA, Takehiko HYODO

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Abstract

An object of the present disclosure is to provide a novel golf ball having excellent spin performance on approach shots. The present disclosure provides a golf ball comprising a golf ball body and a paint film composed of at least one layer and formed on a surface of the golf ball body, wherein at least one layer of the paint film contains a polyurethane as a resin component, the polyurethane is obtained by a reaction between a polyol composition containing a polyol and a polyisocyanate composition containing a polyisocyanate, and the polyol composition contains, as a polyol component, a urethane polyol having a structural unit derived from a polyether polycarbonate diol.

Claims19

Dependent claims

A golf ball comprising a golf ball body and a paint film composed of at least one layer and formed on a surface of the golf ball body, wherein

at least one layer of the paint film contains a polyurethane as a resin component,
the polyurethane is obtained by a reaction between a polyol composition containing a polyol and a polyisocyanate composition containing a polyisocyanate, and
the polyol composition contains, as the polyol component, a urethane polyol having a structural unit derived from a polyether polycarbonate diol represented by the formula (A),
in the formula (A), R1 and R2 are identical to or different from each other and are a linear alkylene group having 1 to 30 carbon atoms, or a branched alkylene group having 1 to 30 carbon atoms, l and n are identical to or different from each other and are a number in a range from 2 to 15, and m is a number in a range from 1 to 15.

1 more element

A method for preparing a golf ball comprising a golf ball body and a paint film composed of at least one layer and formed on a surface of the golf ball body, wherein the method comprises:

a step of applying a polyol composition containing a urethane polyol having a structural unit derived from a polyether polycarbonate diol represented by the formula (A) and a polyisocyanate composition containing a polyisocyanate to the surface of the golf ball body such that a molar ratio (NCO group/OH group) of an isocyanate group (NCO group) included in the polyisocyanate composition to a hydroxyl group (OH group) included in the polyol composition is in a range from 0.6 to 1.4;
and
a step of conducting a reaction between the polyol composition and the polyisocyanate composition to form the paint film,
in the formula (A), R1 and R2 are identical to or different from each other and are a linear alkylene group having 1 to 30 carbon atoms or a branched alkylene group having 1 to 30 carbon atoms, l and n are identical to or different from each other and are a number in a range from 2 to 15, and m is a number in a range from 1 to 15.

1 more element

Dependencies are inferred from the claim text.

Facts

Application: 18/633,839Filed 12 Apr 2024
Priority: JP 2023-08476923 May 2023
Published: 28 Nov 2024
Term ends: Not estimatedThe source records don’t support an estimate.

Classification23 codes

A63B 37/00221
Coatings, e.g. paint films; Markings: characterised by the material
A63B 37/00222
Coatings, e.g. paint films; Markings: physical properties, e.g. hardness
C08G 18/10
Processes: prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
C08G 18/12
Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step: using…

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