# US 7,607,993 B2 · Ink for golf ball, transfer printing film for golf ball and marked golf ball

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- Number: US 7,607,993 B2
- Document ID: US7607993B2
- Status: Granted
- Kind: B2
- Application number: 11/224,290
- Filed: 2005-09-13
- Published: 2006-05-11
- Granted: 2009-10-27
- Earliest claimed: 2004-11-09
- Assignees: Kametani Sangyo Kabushiki Kaisha; Bridgestone Sports Co., Ltd.
- Inventors: Ryuhei Kametani; Takashi Ohira; Susumu Muta
- Web page: https://patentgrep.com/patent/US7607993B2

## CPC

- C08G 18/8093: {Compounds containing active methylene groups}
- A63B 37/0003: {Golf balls}
- A63B 45/02: Marking of balls
- C08L 75/04: Polyurethanes
- C09D 11/102: containing macromolecular compounds obtained by reactions other than those only involving unsaturated carbon-to-carbon bonds
- A63B 37/0024: {Materials other than ionomers or polyurethane}
- A63B 37/0075: {Three piece balls, i.e. cover, intermediate layer and core}
- C08L 75/06: from polyesters
- C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- A63B: APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT (apparatus for passive exercising, massage A61H)
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)
- C09D: COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR (cosmetics A61K; processes for applying liquids or other fluent materials to surfaces, in general, B05D; staining wood B27K5/02; glazes or vitreous enamels C03C; natural resins, French polish, drying-oils, driers, turpentine, per se, C09F; polishing compositions other than French polish, ski waxes C09G; adhesives or use of materials as adhesives C09J; materials for sealing or packing joints or covers C09K3/10; materials for stopping leaks C09K3/12; processes for the electrolytic or electrophoretic production of coatings C25D)

## Abstract

Provided as ink for a golf ball for use in marking a golf ball is ink for a golf ball including an ink resin having a predetermined hydroxyl value and block isocyanate. When marking a golf ball by using the ink of the present invention, a hydroxyl group in the ink resin in an ink layer and an isocyanate group derived from the block isocyanate react with each other to increase hardness of the ink layer, thereby improving abrasion resistance of the marking. In addition, the isocyanate group derived from the block isocyanate and a functional group of an ionomer resin on the ball surface react with each other to improve adhesiveness of marking to the ball surface. Furthermore, the hydroxyl group of the ink resin and an isocyanate group in a urethane top coat layer react with each other to increase strength of the ink layer, thereby improving hitting resistance of the marking. Then, nitrogen in urethane bonding generated by the reaction between the hydroxyl group in the ink layer and the isocyanate group and the isocyanate group in the urethane top coat layer react with each other to further improve abrasion resistance of the marking.

## Claims

### Claim 1

Ink for a golf ball for use in marking a golf ball, including an ink resin having a predetermined hydroxyl value and a block isocyanate, wherein the ink resin includes a urethane resin, and a polyester resin and/or an epoxy resin, and a dissociation temperature of the block isocyanate ranges from 90 to 120° C.

### Claim 2 (depends on 1)

The ink for a golf ball according to claim 1, wherein a hydroxyl value of the urethane resin is less than 0.2 or zero and a hydroxyl value of the polyester resin or the epoxy resin is not less than 60 and not more than 250.

### Claim 3 (depends on 1)

The ink for a golf ball according to claim 1, including a dissociation catalyst of the block isocyanate.

### Claim 4 (depends on 3)

The ink for a golf ball for use in marking a golf ball according to claim 3, including with respect to 100 parts by weight of the urethane resin, 5 to 10 parts by weight of at least either one of the polyester resin and the epoxy resin, 1 to 15 parts by weight of the block isocyanate and 0.1 to 3 parts by weight of the dissociation catalyst.

### Claim 5 (depends on 1)

A transfer printing film for a golf ball for use in marking a golf ball, wherein a predetermined pattern to be transferred onto a golf ball is formed on a base film by the ink for a golf ball according to claim 1.

### Claim 6 (depends on 1)

A marked golf ball having a predetermined pattern marked by the ink for a golf ball according to claim 1.

### Claim 7

Ink for a golf ball for use in marking a golf ball, including an ink resin having a predetermined hydroxyl value and a block isocyanate, wherein a dissociation temperature of the block isocyanate ranges from 90 to 120° C. and isocyanate groups freed from the block isocyanate bond not only with hydroxyl groups of the ink resin but also with functional groups existing on the ball surface.

### Claim 8 (depends on 7)

The ink for a golf ball according to claim 7, wherein the ink resin includes a urethane resin, and a polyester resin and/or an epoxy resin.

### Claim 9 (depends on 8)

The ink for a golf ball according to claim 8, wherein a hydroxyl value of the urethane resin is less than 0.2 or zero and a hydroxyl value of the polyester resin or the epoxy resin is not less than 60 and not more than 250.

### Claim 10 (depends on 8)

The ink for a golf ball according to claim 8, including a dissociation catalyst of the block isocyanate.

### Claim 11 (depends on 10)

The ink for a golf ball for use in marking a golf ball according to claim 10, including with respect to 100 parts by weight of the urethane resin, 5 to 10 parts by weight of at least either one of the polyester resin and the epoxy resin, 1 to 15 parts by weight of the block isocyanate and 0.1 to 3 parts by weight of the dissociation catalyst.