Callaway Golf Company

Taylormade-adidas Golf Company

Pripro Polymers, Inc.

Dunlop Sports

Pripro Polymer, Inc.

Michael A. Catania

Pijush K Dewanjee

John G Guard

Steven S Ogg

David M Bartels

Augustin W Rollinson

Michael S Yagley

Richard C Helmstetter

Ronald K Hettinger

Herbert Reyes

Joshua G Breier

Gary G Marshall

Wayne H Byrne

Robert R Lang

David L Felker

J Neil Hall

Andrew Oldknow

Victor S Dennis

James F Dooley

Kamal Sarkar

Roger C Cleveland

Michael John Tzivanis

Uday V Deshmukh

Karl A Clausen

Chris J Wieland

John B Kosmatka

Jesse Bolane

Sanjay M Kuttappa

Augustin W Rollison

Geoffrey P M Goodman

Bart R Fliers

Kevin A Heene

Augustin W Rollinsoni

John A Calabria

Clydene S C Nee

Katherine T Sitler

Maxine J Besaw

Thomas C Hobbs

Darren F Lawlor

Val J Cupples

Humayun Khan

Michael S Green

David B McGrath

Michael Tzivanis

A cross-linked thermoplastic polyurea is formed by heating a mixture containing a thermoplastic urethane base material, a monomeric and/or polymeric di-isocyanate comprising between 1 to 10% of the total weight of the mixture, and a diamine comprising between 1 to 10% of the total weight of the mixture. A thermoplastic polyurethane may be formed by substituting hydroquinone for the diamine. The mixture is heated to a temperature within the range of 250&#xb0; F. to 550&#xb0; F. The heated mixture, which is flowable, is then injected into at least one injection molding device. The mixture is then cured at a temperature between 150&#xb0; F. to 250&#xb0; F. for a period of time between 2 and 36 hours. The cross-linked thermoplastic polyurethane/polyurea retains the excellent flowability characteristics of a thermoplastic urethane while the same time exhibits good abrasion, tensile strength, rebound, and compression set characteristics which are similar to those found in thermoset urethanes.

Cross-linked thermoplastic polyurethane/polyurea and method of making same

A process for forming a cross-linked thermoplastic polymer is disclosed herein. The cross-linked thermoplastic polymer is formed by heating a first mixture containing a thermoplastic urethane base material, a monomeric diisocyanate comprising between 1 to 10% of the total weight of the first mixture, and a second mixture of a first diamine and a second diamine comprising between 1 to 10% of the total weight of a total reaction product. The heated first mixture, which is flowable, is injected into at least one injection molding device, with the second mixture injected at predetermined intervals to create a homogeneous reaction product.

The iron golf club head () of the present invention is preferably composed of three main components: a periphery member, a central memberand a face plateThe periphery member () is preferably composed of a high density material such as a nickel-tungsten alloy. The central member () is preferably composed of a lightweight, non-metal material. The face plate () is preferably composed of a titanium alloy material. The iron golf club head () preferably has high moments of inertia Izz and Ixx.

Iron golf club

A novel method of manufacturing a golf ball. A golf ball made with this invention exhibits the characteristic feel and playability of a balata cover with superior durability characteristics (cut and shear resistance) which exceed those of a balata or ionomer cover.

Method for manufacturing two and three piece golf balls constructed from polyurethane material

A curative blend for a thermosetting polyurethane material that allows for a polyurethane material with greater durability is disclosed herein. The curative blend is composed of 4,4'-methylenebis-(2,6-diethyl)-aniline and a second curing agent selected from the group consisting of N,N&#x2032;-bis-alkyl-p-phenylenediamine, N,N&#x2032;-dialkylamino-diphenylmethane with tetrapropoxylated ethylenediamine and an aliphatic diamine. A preferred polyurethane prepolymer is polytetramethylene ether glycol terminated toluene diisocyanate prepolymer. The thermosetting polyurethane is preferably utilized as a cover for a golf ball. The cover is preferably formed over a core and boundary layer.

Thermosetting polyurethane material for a golf ball

A novel composition useful for golf ball covers that comprises a blend of a dilsocyanate/polyol polyurethane prepolymer with a curing agent comprising a blend of slow-reacting diamine with a fast-reacting diamine such as dimethylthio 2,4-toluenediamine and diethyl 2,4-toluenediamine, respectively. A golf ball cover made with this composition exhibits the characteristic feel and playability of a balata cover with superior durability characteristics (cut and shear resistance) which exceed those of a balata or ionomer cover.

Polyurethane material for two and three piece golf balls and method

A method for manufacturing a golf club head with an insert having a face plate is disclosed herein. The insert is disposed in a recess of the club head in which the recess has a depth that is greater than the thickness of the insert. The insert preferably has a plurality of tabs on its perimeter to engage the recess walls to allow the insert to essentially float within the recess. An adhesive is preferably disposed between the rear wall of the recess and an interior surface of the insert. Further, an adhesive is applied between the plurality of tabs, and preferably over the exterior surface of each of the plurality of tabs.

Putter-type golf club head with an insert

A method for manufacturing a golf club head with an insert having a face plate is disclosed herein. The insert is disposed in a recess of the club head in which the recess has a depth that is greater than the thickness of the insert. The insert is preferably composed of a thermoplastic polyurethane material formed from a polytetramethylene ether glycol terminated hexamethylene diisocyanate prepolymer having a NCO group content of 8.0% to 12.0%, and a 1,4 butane diol. An adhesive is preferably disposed between the rear wall of the recess and an interior surface of the insert. Further, an adhesive is applied between the plurality of tabs, and preferably over the exterior surface of each of the plurality of tabs.

A curative blend for a thermosetting polyurethane material that allows for a polyurethane material with greater durability is disclosed herein. The curative blend is composed of a diethyl-2,4-toluene-diamine and a second curing agent. A preferred polyurethane prepolymer is a polytetramethylene ether glycol terminated 4,4'-dicyclohexyl methane diisocyanate polyurethane prepolymer. The thermosetting polyurethane is preferably utilized as a cover for a golf ball. The cover is preferably formed over a core and boundary layer.

Polyurethane material for a golf ball cover

An insert composed of a thermoplastic polyurethane materials is disclosed herein. The thermoplastic polyurethane insert is disposed in a recess of the club head in which the recess has a depth that is greater than the thickness of the insert. The thermoplastic polyurethane insert preferably has a plurality of tabs on its perimeter to engage the recess walls to allow the insert to essentially float within the recess. An adhesive is disposed between the rear wall of the recess and an interior surface of the insert. Further, an adhesive is applied between the plurality of tabs, and preferably over the exterior surface of each of the plurality of tabs.

Insert for golf club head

A curative blend for a thermosetting polyurethane material that allows for a polyurethane material with greater durability is disclosed herein. The curative blend is composed of 4,4'-methylenebis-(2,6-diethyl)-aniline and a second curing agent. A preferred polyurethane prepolymer is a polytetramethylene ether glycol terminated 4,4&#x2032;-dicyclohexyl methane diisocyanate polyurethane prepolymer. The thermosetting polyurethane is preferably utilized as a cover for a golf ball. The cover is preferably formed over a core and boundary layer.

Thermosetting polyurethane material for a golf ball cover

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Carlsbad, CA, United States of America

Pijush K Dewanjee