Golf ball compositions comprising thermoplastic polyurethane ionomers

Patent metadata

Field	Value
Publication number	US-10245470-B1
Application number	US-201715843091-A
Country	US
Kind code	B1
Filing date	Dec 15, 2017
Priority date	Dec 15, 2017
Publication date	Apr 2, 2019
Grant date	Apr 2, 2019

Abstract

The present invention provides a golf ball comprising an inner core and an outer cover layer, wherein at least one of the inner core and outer cover layer is formed from a thermoplastic polyurethane ionomer.

First claim

What is claimed is:

1. A golf ball comprising:
an inner core layer having an outer surface hardness of 85 Shore C or less and formed from a thermoplastic polyurethane ionomer composition,
an outer core layer having an outer surface hardness of 50 Shore C or greater and formed from a thermoset rubber composition, and
a cover;
wherein the thermoplastic polyurethane ionomer composition of the inner core layer includes an ionic monomer covalently bonded to the polyurethane ionomer backbone, and wherein the ionic monomer comprises a sulfonate containing polyol ion and a quaternary ammonium counterion; and
wherein the outer surface hardness of the outer core layer is greater than the outer surface hardness of the inner core layer.

2. The golf ball of claim 1 , wherein the sulfonate containing polyol is an ionic diol.

3. The golf ball of claim 1 , wherein the sulfonate containing polyol ion is N,N-bis(2-hydroxyethyl)-2-aminoethanesulfonic acid.

4. The golf ball of claim 1 , wherein the quaternary ammonium counterion is an alkyl ammonium cation.

5. The golf ball of claim 1 , wherein the quaternary ammonium counterion is selected from the group consisting of didodecyldimethylammonium, tetrahexylammonium, terakis (decyl) ammonium, trimethyloctadecylammonium, hexadecyltrimethylammonium, tetradecyltrimethylammonium, dodecyltrimethylammonium, decyltrimethylammonium, trimethyloctyl ammonium, hexyltrimethylammonium, dimethyldioctadecylammonium, dihexadecyldimethylammonium, dimethylditetradecylammonium, didodecyldimethylammonium, didecyldimethylammonium, methyltrioctadecylammonium, tridodecylmethylammonium, tricaprylylmethylammonium methyltrioctylammonium, tributylmethyl ammonium, tetraoctadecylammonium, tetrahexadecylammonium, tetradodecylammonium, tetrakis (decyl) ammonium, tetraoctyl ammonium, tetraheptylammonium, tetrahexylammonium, tetrabutylammonium, and combinations of two or more thereof.

6. The golf ball of claim 1 , wherein the outer surface hardness of the inner core layer is 80 Shore C or less.

7. The golf ball of claim 1 , wherein the outer surface hardness of the inner core layer is 75 Shore C or less.

8. The golf ball of claim 1 , wherein the outer surface hardness of the outer core layer is 65 Shore C or greater.

9. The golf ball of claim 1 , wherein the outer surface hardness of the outer core layer is 75 Shore C or greater.

10. The golf ball of claim 1 , wherein the outer surface hardness of the outer core layer is 85 Shore C or greater.

Assignees

• Acushnet Co

Inventors

• Binette Mark L
• Sullivan Michael J
• Blink Robert
• Comeau Brian
• Bulpett David A

Classifications

• A63B37/0059 Primary

  Ionomer · CPC title

• C08G18/3857

  having nitrogen in addition to sulfur · CPC title

• C08L75/04

  Polyurethanes · CPC title

• A63B37/0031

  Hardness · CPC title

• A63B37/0075

  Three piece balls, i.e. cover, intermediate layer and core · CPC title