Polyacrylate rubber compositions for golf balls
View Patent ↗Golf ball components, such as cores, intermediate layers, and covers, formed with compositions including polyacrylate elastomers cured with peroxide systems, amine-based systems, or a combination thereof.
1. A golf ball comprising a core and a cover, wherein at least a portion of the golf ball comprises a polyacrylate rubber composition comprising:
a polyacrylate elastomer; and
a cure system, wherein the cure system comprises a diamine and an accelerator;
wherein the polyacrylate elastomer comprises about 5 percent to about 30 weight percent C 1-3 acrylate, about 40 percent to about 70 weight percent C 4-8 acrylate, and about 20 percent to about 30 weight percent an acrylate with an alkoxyalkyl group having about 2 to about 12 carbon atoms based on the total weight of the polyacrylate elastomer.
2. The golf ball of claim 1 , wherein the diamine is selected from the group consisting of hexamethylene carbamate, ethylene diamine, methyl isobutyl ketimine, and mixtures thereof.
3. The golf ball of claim 1 , wherein the accelerator comprises di-orthotolyl guanidine, diphenyl guanidine, and mixtures thereof.
4. The golf ball of claim 1 , wherein the cure system comprises hexamethylene carbamate and at least one of di-orthotolyl guanidine and diphenyl guanidine.
5. A golf ball comprising a core and a cover, wherein at least a portion of the golf ball comprises a polyacrylate rubber composition comprising:
a polyacrylate elastomer; and
a cure system, wherein the cure system comprises a diamine, a peroxide, and a polybutadiene having a number average molecular weight of about 5000 or less.
6. The golf ball of claim 5 , wherein the diamine is selected from the group consisting of hexamethylene carbamate, ethylene diamine, methyl isobutyl ketimine, and mixtures thereof.
7. The golf ball of claim 5 , wherein the polyacrylate elastomer comprises a C 4-8 acrylate, a C 1-3 acrylate, and an acrylate with an alkoxyalkyl group having about 2 to about 12 carbon atoms.
8. The golf ball of claim 5 , wherein the peroxide is present in an amount of about 1 part to about 5 parts per hundred parts of the composition.
9. The golf ball of claim 5 , wherein the polybutadiene is present in an amount of about 5 parts or less per hundred parts of the composition, and wherein the polybutadiene has a number average molecular weight of about 500 to about 2000.