Catalyst dip

Patent metadata

Field	Value
Publication number	US-9566728-B1
Application number	US-201514657958-A
Country	US
Kind code	B1
Filing date	Mar 13, 2015
Priority date	Jun 7, 2011
Publication date	Feb 14, 2017
Grant date	Feb 14, 2017

Abstract

The present invention relates to a method for forming a golf ball. The method comprises mixing a polyisocyanate crosslinker with a base TPU cover material, wherein the polyisocyanate crossliker is aliphatic, miscible with the base TPU cover material and has functionalities greater than or equal to 2. The method further comprises dipping a golf ball in a catalyst solution, wherein the catalyst solution is allowed to absorb into a cover of the golf ball and heating the golf ball to allow continued diffusion of the catalyst solution into the cover of the golf ball.

First claim

I claim as my invention the following:

1. A method for forming a cover for a golf ball, the method comprising:
dry blending a polyisocyanate crosslinker in a masterbatch with a base thermoplastic polyurethane material to form an injection molding material, wherein the composition by weight of the polyisocyanate crosslinker ranges from 17 percent to 27 percent of the injection molding material and wherein the composition by weight of the base thermoplastic polyurethane ranges from 63 percent to 73 percent of the injection molding material;
injection molding a cover for a golf ball from the injection molding material;
dipping the golf ball in a catalyst solution wherein the catalyst solution comprises an organometallic compound, wherein the catalyst solution is allowed to absorb into the cover for the golf ball; and
heating the golf ball to allow continued diffusion of the catalyst solution into the cover for the golf ball.

2. The method according to claim 1 wherein heating of the golf ball is conducted at a temperature ranging from 150 to 200 degrees Fahrenheit for a duration of 1 to 4 hours.

3. A method for forming a cover for a golf ball, the method comprising:
heating a polyisocyanate crosslinker to a liquid form;
pumping the liquid polyisocyanate crosslinker into a base thermoplastic polyurethane material during an injection molding of a golf ball cover, wherein the polyisocyanate crosslinker is aliphatic, miscible with the base thermoplastic polyurethane material and has functionalities greater than or equal to two;
dipping the golf ball in a catalyst solution wherein the catalyst solution comprises an organometallic compound, wherein the catalyst solution is allowed to absorb into the cover for the golf ball; and
heating the golf ball to allow continued diffusion of the catalyst solution into the cover for the golf ball.

Assignees

• Callaway Golf Co

Inventors

• Parnell Shane R

Classifications

• B29K2075/00

  Use of {PU, i.e.} polyureas or polyurethanes {or derivatives thereof}, as moulding material · CPC title

• A63B37/0023

  Covers · CPC title

• B29C45/0001 Primary

  characterised by the choice of material · CPC title

• C08J7/065 Primary

  Low-molecular-weight organic substances, e.g. absorption of additives in the surface of the article · CPC title

• C08G18/72

  Polyisocyanates or polyisothiocyanates · CPC title