Invention Application
- Patent Title: GOLF BALL
- Patent Title (中): 高尔夫球
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Application No.: US13080276Application Date: 2011-04-05
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Publication No.: US20110244986A1Publication Date: 2011-10-06
- Inventor: Satoko OKABE , Kazuhiko Isogawa , Keiko Matsuhisa
- Applicant: Satoko OKABE , Kazuhiko Isogawa , Keiko Matsuhisa
- Priority: JP2010-087538 20100406
- Main IPC: A63B37/06
- IPC: A63B37/06 ; A63B37/02

Abstract:
An object of the present invention is to provide a golf ball excellent in resilience and durability, with a good moldability of the intermediate layer. The present invention provides a golf ball having a center, a cover, and an intermediate layer disposed between the center and the cover, wherein the intermediate layer is formed from an intermediate layer composition having a flexural modulus ranging from 150 MPa to 450 MPa, a maximum loss factor (tan δ) between −20° C. and 0° C. of 0.08 or less, a rebound resilience of 55% or more, and a slab hardness ranging from 40 to 60 in Shore D hardness, and the intermediate layer composition comprises, as a resin component, 30 mass % to 70 mass % of (A) a modified polyester elastomer having a Shore A hardness of 95 or less; 70 mass % to 30 mass % of (B) a binary ionomer resin having a Shore D hardness of 65 or more, a flexural modulus of 300 MPa or more, and a melt flow rate (190° C., 2.16 kg) of 1.0 g/10 min or more; and 0 mass % to 50 mass % of (C) a thermoplastic resin other than (A) component and (B) component (provided that a total content of (A) component, (B) component, and (C) component is 100 mass %).
Public/Granted literature
- US09149687B2 Golf ball Public/Granted day:2015-10-06
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