Golf balls with thermoplastic silicone-urethane copolymers

• US 7,037,217 B2
• Filed: 05/11/2004
• Issued: 05/02/2006
• Est. Priority Date: 10/22/2001
• Status: Expired due to Term

• Current Assignee: Acushnet Company (FILA Holdings Corp.)
• Original Assignee: Acushnet Company (FILA Holdings Corp.)
• Inventors: Rajagopalan, Murali, Harris, Kevin M
• Primary Examiner(s): Moore, Margaret G.
• Application Number:
  US10/843,017
• Publication Number:
  US 20040210021A1
• Time in Patent Office: 721 Days
• Field of Search: 473/378, 473/374, 473/351, 528/28
• US Class Current: 473/378
• CPC Class Codes: A63B 37/0003 Golf balls
• CPC Class Codes: A63B 37/0031 Hardness
• CPC Class Codes: A63B 37/0033 Thickness
• CPC Class Codes: A63B 37/0043 Hardness
• CPC Class Codes: A63B 37/0045 Thickness
• CPC Class Codes: A63B 37/0062 Hardness
• CPC Class Codes: A63B 37/0064 Diameter
• CPC Class Codes: A63B 37/0076 Multi-piece balls, i.e. having two or more intermediate layers
• CPC Class Codes: A63B 37/0087 Deflection or compression
• CPC Class Codes: A63B 37/12 Special coverings , i.e. outer layer material balls with finger holes A63B37/0001, golf ball covers A63B37/0023
• CPC Class Codes: C08G 18/3225 Polyamines
• CPC Class Codes: C08G 18/44 Polycarbonates
• CPC Class Codes: C08G 18/4854 Polyethers containing oxyalkylene groups having four carbon atoms in the alkylene group
• CPC Class Codes: C08G 18/61 Polysiloxanes
• CPC Class Codes: C08G 18/758 containing two or more cycloaliphatic rings

Abstract

A golf ball comprising a cover and a core, and optionally at least one intermediate layer interposed between the cover and the core, wherein the cover or the intermediate layer or both are formed from a blend comprising a thermoplastic silicone-urethane copolymer. The silicone content of the silicone-urethane copolymer is between 1 and 20 percent by weight.

Claims

1. A golf ball comprising:

a core of at least one layer;

a cover of at least one cover layer having a thickness between about 0.02 to about 0.125 inch disposed concentrically about the core;

the cover layer comprises a silicone-urethane copolymer having a Shore D hardness of about 30 to 65, and

wherein the silicone-urethane copolymer comprises a polycarbonate soft segment with a silicone moiety.

2. The golf ball according to claim 1, wherein the silicone-urethane copolymer comprises a polyether soft segment with a silicone moiety.

3. The golf ball according to claim 1, wherein the silicone-urethane copolymer comprises a polyalkylene oxide soft segment with a silicone moiety.

4. The golf ball according to claim 1, wherein the silicone-urethane copolymer comprises a polyethylene oxide soft segment with a silicone moiety.

5. The golf ball according to claim 1, wherein the silicone-urethane copolymer comprises a polytetramethylene oxide soft segment with a silicone moiety.

6. The golf ball according to claim 1, wherein the silicone-urethane copolymer comprises a polyester soft segment with a silicone moiety.

7. The golf ball according to claim 1, wherein the silicone-urethane copolymer has an ultimate elongation of at least about 400%.

8. The golf ball according to claim 1, wherein the silicone-urethane copolymer has a tensile strength of at least 3000 psi.

9. The golf ball according to claim 1, wherein the silicone-urethane copolymer has an initial modulus greater than about 3000 psi.

10. The golf ball according to claim 1, wherein the golf ball has a compression of less than 120.

11. The golf ball according to claim 1, wherein the core has a diameter from about 1.00 to about 1.62 inches.

12. The golf bail according to claim 1, wherein the thermoplastic silicon-urethane copolymer is blended with at least one thermoplastic or thermoset polymer selected from the group consisting of ionomers and their acid polymers including highly neutralized acid polymers, polyurea, polyolefins, polyacrylates, polyamides, polyphenylene oxide, polyisporene, block copoly (ether or ester-amide), block copoly (ether or ester-ester), polysulfones, reaction injection moldable thermoplastic and thermoset polymers, block copolymer of styrene-butadiene and its hydrogenated derivatives, dynamically vulcanized ethylene-propylene rubber, polyvinylidenefluoride, acrylonitrile-butadiene styrene copolymer, epoxy resins, polystyrenes, acrylics, polybutadienes and polyester.

13. The golf ball according to claim 1, wherein the thermoplastic silicone-urethane copolymer includes a surface modifying additive.

14. The golf ball according to claim 1, in which the silicone-urethane copolymer has a silicone content in an amount between about 1 percent to 20 percent of the copolymer by weight.

15. A golf ball comprising:

a core of at least one layer;

a cover of at least one layer disposed concentrically about the core; and

at least one intermediate layer interposed between the core and the cover; and

wherein the cover or the intermediate layer comprises a silicone-urethane copolymer, in which the silicone content is present in the copolymer in an amount between about 1 percent to 20 percent of the copolymer by weight.

16. The golf ball according to claim 15, wherein the silicone-urethane copolymer comprises a polyether soft segment with a silicone moiety.

17. The golf ball according to claim 15, wherein the silicone-urethane copolymer comprises a polycarbonate soft segment with a silicone moiety.

18. The golf ball according to claim 15, wherein the silicone-urethane copolymer comprises a polyethylene oxide soft segment with a silicone moiety.

19. The golf ball according to claim 15, wherein the cover has a thickness of about 0.02 inches to about 0.125 inches.

20. The golf ball according to claim 15, wherein the thickness of the at least one intermediate layer is about 0.02 inches to about 0.1 inches.

21. The golf ball of claim 15, wherein the cover is formed of a thermoset material and the intermediate layer is formed from the silicone-urethane copolymer.