Compositions for use in golf balls

• US 7,417,107 B2
• Filed: 09/14/2005
• Issued: 08/26/2008
• Est. Priority Date: 02/06/2002
• Status: Expired due to Fees

• Current Assignee: Acushnet Company (FILA Holdings Corp.)
• Original Assignee: Acushnet Company (FILA Holdings Corp.)
• Inventors: Wu, Shenshen, Kuntimaddi, Manjari, Ricci, Shawn, Rajagopalan, Murali
• Primary Examiner(s): BUTTNER, DAVID J
• Application Number:
  US11/162,538
• Publication Number:
  US 20060009309A1
• Time in Patent Office: 1,077 Days
• Field of Search: None
• US Class Current: 528/68
• CPC Class Codes: A63B 37/0003 Golf balls
• CPC Class Codes: A63B 37/0024 Materials other than ionomers or polyurethane
• CPC Class Codes: A63B 37/0033 Thickness
• CPC Class Codes: A63B 37/0039 characterised by the material
• CPC Class Codes: A63B 37/0045 Thickness
• CPC Class Codes: A63B 37/0061 Coefficient of restitution
• CPC Class Codes: A63B 37/0064 Diameter
• CPC Class Codes: A63B 37/0065 Deflection or compression
• CPC Class Codes: A63B 37/0069 Flexural modulus; Bending stiffness
• CPC Class Codes: C08G 18/10 Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
• CPC Class Codes: C08G 18/3234 cycloaliphatic
• CPC Class Codes: C08G 18/324 containing only one aromatic ring
• CPC Class Codes: C08G 18/62 Polymers of compounds having carbon-to-carbon double bonds
• CPC Class Codes: C08G 18/6208 Hydrogenated polymers of conjugated dienes
• CPC Class Codes: C08G 18/758 containing two or more cycloaliphatic rings
• CPC Class Codes: C08G 18/7657 containing two or more aromatic rings

Abstract

A golf ball having a core and at least one layer disposed about the core is disclosed. The at least one layer is formed from a composition having multiple reactive and/or non-reactive ingredients. At least one of these ingredients is a telechelic polydiene polyahl having a polydispersity of 1.35 or less.

Claims

1. A golf ball comprising:

a core, the core having a diameter of 1 inch or greater; and

at least one layer disposed about the core, the layer having a thickness of 0.005 inches to 0.1 inches and being formed from a polyurea composition comprising an isocyanate-containing prepolymer formed from a polyisocyanate and a telechelic polyahl;

wherein the prepolymer has a viscosity at room temperature of 200 Pa·

s or less and a % NCO of 15% or less;

wherein the telechelic polyahl has a polyhydrocarbon backbone that is free of aromatic unsaturations and free of hydrolysable moieties, and has a polydispersity of 1.35 or less; and

wherein the telechelic polyahl is a homotelechelic polyahl having amine end groups.

2. The golf ball of claim 1, wherein the composition forms a a polyurea elastomer, and the telechelic polyahl forms soft segments in the elastomer.

3. The golf ball of claim 1, wherein the prepolymer further comprises a polyether polyahl or a polyester polyahl that is compatible with the telechelic polyahl.

4. The golf ball of claim 1, wherein the telechelic polyahl has a functionality of from 1.6 to 2.3.