Golf ball incorporating peptizers and method of manufacture
View Patent ↗A golf ball including a composition having an unsaturated polymer, a cross-linking agent, a peptizer, and an accelerator. The composition can be incorporated into the golf ball's core, intermediate layers, and cover layers, and can provide optimal performance and durability properties. The golf balls incorporating the composition are easy to manufacture.
1. A golf ball including a composition comprising:
an unsaturated polymer;
a cross-linking agent;
a peptizer, wherein the peptizer comprises a non-metal salt of pentachlorothiophenol; and
an accelerator.
2. The golf ball according to claim 1 , wherein the composition includes greater than about 0.1 part by weight of the peptizer per 100 parts by weight of the unsaturated polymer.
3. The golf ball according to claim 1 , wherein the composition includes greater than about 0.5 part by weight of the peptizer per 100 parts by weight of the unsaturated polymer.
4. The golf ball according to claim 1 , wherein the composition includes greater than about 2.5 parts by weight of the peptizer per 100 parts by weight of the unsaturated polymer.
5. The golf ball according to claim 1 , wherein the composition includes from about 0.1 part to about 10 parts by weight of the accelerator per 100 parts by weight of the unsaturated polymer.
6. The golf ball according to claim 1 , wherein the composition includes from about 0.2 part to about 5 parts by weight of the accelerator per 100 parts by weight of the unsaturated polymer.
7. The golf ball according to claim 1 , wherein the composition includes from about 0.5 part to about 1.5 parts by weight of the accelerator per 100 parts by weight of the unsaturated polymer.
8. The golf ball according to claim 1 , wherein the accelerator is selected from the group consisting of 2-mercaptobenzothiazole and a salt of 2-mercaptobenzothiazole.
9. The golf ball according to claim 1 , wherein the composition includes from about 0.05 part to about 5 parts by weight of the cross-linking agent per 100 parts by weight of the unsaturated polymer.
10. The golf ball according to claim 1 , wherein the composition includes from about 0.2 part to about 3 parts by weight of the cross-linking agent per 100 parts by weight of the unsaturated polymer.
11. The golf ball according to claim 1 , wherein the composition includes from about 0.5 part to about 1.5 parts by weight of the cross-linking agent per 100 parts by weight of the unsaturated polymer.
12. The golf ball according to claim 1 , wherein the unsaturated polymer is selected from the group consisting of 1,2-polybutadiene, cis-1,4-polybutadiene, trans-I, 4-polybutadiene, cis-polyisoprene, trans-polyisoprene, polychloroprene, polybutylene, styrene-butadiene rubber, block copolymer of styrene and butadiene, block copolymer of styrene and isoprene, nitrile rubber, silicone rubber, polyurethane, and mixtures thereof.
13. The golf ball according to claim 1 , wherein the composition further comprises an ingredient selected from the group consisting of UV stabilizers, photo stabilizers, antioxidants, colorants, dispersants, mold releasing agents, processing aids, and fillers.
14. The golf ball according to claim 13 , wherein the ingredient is a filler that adjusts a density of the composition.
15. The golf ball according to claim 13 , wherein the ingredient is a filler selected from the group consisting of zinc oxide, tungsten, and barium sulfate.
16. The golf ball according to claim 13 , wherein the ingredient is a filler and the composition includes from about 10 parts to about 80 parts by weight of the filler per 100 parts by weight of the unsaturated polymer.
17. The golf ball according to claim 1 , wherein the composition further comprises a compound selected from the group consisting of an unsaturated carboxylic acid, a metal salt of the unsaturated carboxylic acid, and mixtures thereof.
18. The golf ball according to claim 17 , wherein the composition includes from about 20 parts to about 60 parts by weight of the compound per 100 parts by weight of the unsaturated polymer.
19. The golf ball according to claim 1 , further comprising:
a core; and
a cover layer over the core;
wherein at least one of the core and the cover layer includes the composition.
20. The golf ball according to claim 19 , wherein the core includes:
an inner core; and
an outer core encasing the inner core.
21. The golf ball according to claim 19 , wherein the core includes a material in liquid form.
22. The golf ball according to claim 19 , further comprising a layer of rubber thread located between the core and the cover layer.
23. The golf ball according to claim 1 , further comprising:
a core;
at least one intermediate layer over the core; and
a cover layer over the outermost intermediate layer;
wherein at least one of the core, the at least one intermediate layer, and the cover layer includes the composition.
24. A golf ball including a composition comprising:
an unsaturated polymer;
a cross-linking agent;
a peptizer, wherein the peptizer comprises a non-metal salt of pentachlorothiophenol; and
an accelerator;
wherein the composition includes:
from about 0.2 part to about 3 parts by weight of the cross-linking agent per 100 parts by weight of the unsaturated polymer,
greater than about 0.5 part by weight of the peptizer per 100 parts by weight of the unsaturated polymer, and
from about 0.2 part to about 5 parts by weight of the accelerator per 100 parts by weight of the unsaturated polymer.
25. The golf ball according to claim 24 , wherein the composition includes greater than about 2.5 parts by weight of the peptizer per 100 parts by weight of the unsaturated polymer.
26. The golf ball according to claim 24 , wherein the accelerator is selected from the group consisting of 2-mercaptobenzothiazole and a salt of 2-mercaptobenzothiazole.
27. The golf ball according to claim 24 , wherein the unsaturated polymer is selected from the group consisting of 1,2-polybutadiene, cis-1,4-polybutadiene, trans-1,4-polybutadiene, cis-polyisoprene, trans-polyisoprene, polychloroprene, polybutylene, styrene-butadiene rubber, block copolymer of styrene and butadiene, block copolymer of styrene and isoprene, nitrile rubber, silicone rubber, polyurethane, and mixtures thereof.
28. The golf ball according to claim 24 , wherein the composition further comprises an ingredient selected from the group consisting of UV stabilizers, photo stabilizers, antioxidants, colorants, dispersants, mold releasing agents, processing aids, and fillers.
29. The golf ball according to claim 28 , wherein the ingredient is a filler that adjusts a density of the composition.
30. The golf ball according to claim 28 , wherein the ingredient is a filler selected from the group consisting of zinc oxide, tungsten, and barium sulfate.
31. The golf ball according to claim 28 , wherein the ingredient is a filler and the composition includes from about 10 parts to about 80 parts by weight of the filler per 100 parts by weight of the unsaturated polymer.
32. The golf ball according to claim 24 , wherein composition further comprises a compound selected from the group consisting of an unsaturated carboxylic acid, a metal salt of the unsaturated carboxylic acid, and mixtures thereof.
33. The golf ball according to claim 32 , wherein the composition includes from about 20 parts to about 60 parts by weight of the compound per 100 parts by weight of the unsaturated polymer.
34. The golf ball according to claim 24 , further comprising:
a core; and
a cover layer over the core;
wherein at least one of the core or cover layer includes the composition.
35. The golf ball according to claim 34 , wherein the core includes:
an inner core; and
an outer core encasing the inner core.
36. The golf ball according to claim 34 , wherein the core includes a material in liquid form.
37. The golf ball according to claim 34 , further comprising a layer of rubber thread located between the core and the cover layer.
38. The golf ball according to claim 24 , further comprising:
a core;
at least one intermediate layer over the core; and
a cover layer over the outermost intermediate layer;
wherein at least one of the core, the at least one intermediate layer, and the cover layer includes the composition.
39. A method for manufacturing a golf ball, the method comprising: providing:
an unsaturated polymer, a cross-linking agent,
a peptizer, wherein the peptizer comprises a non-metal salt of pentachlorothiophenol, and
an accelerator;
preparing a composition from the unsaturated polymer, the cross-linking agent, the peptizer, and the accelerator; and
forming the composition into the golf ball.