The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 15, 2017
Filed:
Dec. 28, 2015
Dunlop Sports Co. Ltd., Kobe-shi, Hyogo, JP;
DUNLOP SPORTS CO. LTD., Kobe-Shi, Hyogo, JP;
Abstract
An object of the present invention is to provide a golf ball striking a good balance between flight distance on driver shots and spin rate on approach shots, and excellent in stain resistance and shot feeling. The present invention provides a golf ball comprising a paint film, wherein a base resin of the paint film contains a polyurethane obtained by a reaction between a polyisocyanate composition and a polyol composition containing a urethane polyol having a polyether diol with a number average molecular weight in a range from 800 to 3,000 as a constituent component, and the following requirements are satisfied:Mp≦200×−75Mp≦100Minm−Moum>40Moum−Mc<5Tinm≧Toum>Tc>Tp(Tinm×Minm)/(Toum×Moum)>2.0(Toum×Moum)/(Tc×Mc)<3.0(Tc×Mc)/(Tp×Mp)>10.0[where Mp, Minm, Moum, and Mc represent a 10% elastic modulus (kgf/cm) of the paint film, inner intermediate layer, outer intermediate layer and cover, respectively; Tp, Tinm, Toum, and Tc represent a thicknesses (mm) of the paint film, inner intermediate layer, outer intermediate layer and cover, respectively; and X represents a molar ratio (NCO/OH) of a NCO group in the polyisocyanate composition to a OH group in the polyol composition.].