Compositions for use in golf balls

• US 7,108,921 B2
• Filed: 05/14/2004
• Issued: 09/19/2006
• Est. Priority Date: 10/24/2002
• Status: Expired due to Term

• Current Assignee: Acushnet Company (FILA Holdings Corp.)
• Original Assignee: Acushnet Company (FILA Holdings Corp.)
• Inventors: Sullivan, Michael J.
• Primary Examiner(s): Buttner, David J.
• Application Number:
  US10/845,907
• Publication Number:
  US 20040219995A1
• Time in Patent Office: 858 Days
• Field of Search: None
• US Class Current: 428/421
• CPC Class Codes: A63B 37/0003 Golf balls
• CPC Class Codes: A63B 37/00221 characterised by the material
• CPC Class Codes: A63B 37/0027 Polyurea
• CPC Class Codes: A63B 37/0031 Hardness
• CPC Class Codes: A63B 37/0033 Thickness
• CPC Class Codes: A63B 37/0037 Flexural modulus; Bending stiffness
• CPC Class Codes: A63B 37/0043 Hardness
• CPC Class Codes: A63B 37/0049 Flexural modulus; Bending stiffness
• CPC Class Codes: A63B 37/0065 Deflection or compression
• CPC Class Codes: A63B 37/0075 Three piece balls, i.e. cover, intermediate layer and core
• CPC Class Codes: A63B 37/0076 Multi-piece balls, i.e. having two or more intermediate layers
• CPC Class Codes: A63B 37/06 Elastic cores
• CPC Class Codes: Y10T 428/3154 Of fluorinated addition polymer from unsaturated monomers
• CPC Class Codes: Y10T 428/31544 Addition polymer is perhalogenated

Abstract

The present invention is directed to a golf ball comprising at least one interface between a first crosslinkable material and a second crosslinkable material. The first crosslinkable material comprises a polydiene homopolymer or copolymer. The second material comprises a fluoropolymer.

Claims

1. A golf ball comprising at least one interface between a first crosslinkable material and a second crosslinkable material, wherein the first crosslinkable material comprises at least one polydiene homopolymer or copolymer, and the second crosslinkable material comprises at least one fluoropolymer wherein the interface comprises crosslinks between the two materials chosen from carbon-carbon crosslinks, ionic crosslinks and silane-based crosslinks.

2. The golf ball of claim 1, wherein the golf ball comprises a core, an inner cover layer encasing the core, and an outer cover layer encasing the inner cover layer,

wherein the first crosslinkable material forms at least a portion of the outer cover layer, the outer cover layer having a thickness of 0.125 inch or less, and a flexural modulus of 30,000 psi or less,

and wherein the second crosslinkable material forms at least a portion of the inner cover layer, the inner cover layer having a flexural modulus of 100,000 psi or less.

3. The golf ball of claim 2, wherein the outer cover layer has a Shore D hardness of from 20 to 60, and the inner cover layer has a Shore D hardness of from 55 to 80, and wherein the Shore D hardness of the inner cover layer is not less than the Shore D hardness of the outer cover layer.

4. The golf ball of claim 2, wherein the outer cover layer is coated with at least one topcoat selected from the group consisting of white pigment impregnated polyurethane and polyurea topcoats.