Polybutadiene golf ball product
AssigneeAcushnet Company
InventorsPaul M. Gendreau, Lauro C. Cadorniga
Life of this patent
Estimating the term…
Abstract
The golf ball product is made from two polybutadienes, each having a Mooney viscosity of below about 50 and a cis-1,4 content of greater than about 40%. One polybutadiene is nickel- or cobalt-catalyzed, while the other is lanthanide-catalyzed. The golf ball product includes a mix of the two polybutadienes, a metal salt of an unsaturated carboxylic acid and a free radical initiator.
Claims10
A golf ball product comprising a mix of two polybutadienes, said mix comprising about 85 to about 15 phr of a nickel- or cobalt-catalyzed polybutadiene having a cis-1,4 content above about 40% and a Mooney viscosity of no greater than about 50 and about 15 to about 85 phr of a lanthanide-catalyzed polybutadiene having a cis-1,4 content above about 40% and a Mooney viscosity of no greater than about 50;
- a metal salt of an unsaturated carboxylic acid;
- and a free radical initiator.
A golf ball product comprising about 15 to about 85 phr of a nickel- or cobalt-catalyzed polybutadiene having a cis-1,4 content above about 40% and a Mooney viscosity of no greater than about 50;
- about 15 to about 85 phr of a lanthanide-catalyzed polybutadiene having a cis-1,4 content above about 40% and a Mooney viscosity of no greater than about 50;
- about 25 to about 45 phr of a metal salt of an unsaturated carboxylic acid;
- about 0.2 to about 2.0 phr of a peroxide catalyst;
- and about 5 to about 25 phr of an inorganic filler.
A golf ball core comprising:
- (a) about 15 to about 85 phr of a nickel- or cobalt-catalyzed polybutadiene having a cis-1,4 content above about 40% and a Mooney viscosity of no greater than about 50;
- (b) about 85 to about 15 phr of a lanthanide-catalyzed polybutadiene having a cis-1,4 content above about 40% and a Mooney viscosity of no greater than about 50;
- (c) about 25 to about 45 phr of a metal salt of an unsaturated carboxylic acid;
- and
- (d) a peroxide catalyst.
A golf ball core comprising:
- (a) a mix of two polybutadienes, said mix consisting of about 85 to about 15 phr of a nickel- or cobalt-catalyzed polybutadiene having a cis-1,4 content above about 40% and a Mooney viscosity of no greater than about 50;
- and about 15 to about 85 phr of a lanthanide-catalyzed polybutadiene having a cis-1,4 content above about 40% and a Mooney viscosity of no greater than about 50;
- (b) a metal salt of an alpha, beta ethylenically unsaturated carboxylic acid having 3 to 8 carbon atoms;
- and
- (c) a peroxide catalyst.
Dependencies are inferred from the claim text.