Golf ball
AssigneeTaylor Made Golf Company, Inc.
InventorsHyun J. Kim, Hong G. Jeon
Life of this patent
Estimating the term…
Abstract
The present disclosure relates to golf balls having components including intermediate layers and outer cover layers prepared from blends of polyamides mixed with one or more functional polymer modifiers. The functional polymer modifier incorporates a copolymer or a terpolymer having a glycidyl group, hydroxyl group, maleic anhydride group or carboxylic group, or a mixture of these. When used in golf ball covers or mantles, these materials exhibit improved impact durability when compared to analogous balls but having ionomeric- or polyurethane-based layers of similar hardness.
Claims16
A golf ball comprising;
- 1) a core comprising a center,
- 2) an outer cover layer;
- and
- 3) one or more intermediate layers,
- wherein at least one of the core, outer cover layer, or intermediate layer comprises a blend composition of;
- (A) from about 50 to about 95 wt % (based on the combined weight of Components A and B) of a polyamide;
- and
- (B) from about 5 to about 50 wt % (based on the combined weight of Components A and B) of one or more functional polymer modifiers selected from the group consisting of a copolymer having a glycidyl group, hydroxyl group, maleic anhydride group or carboxylic group, or a terpolymer having a glycidyl group, hydroxyl group, maleic anhydride group or carboxylic group, and mixtures thereof;
- and
- wherein said blend composition has a flexural modulus of from about 5 to about 500 kpsi, a Shore D hardness of from about 25 to about 85, and a tensile elongation of at least about 20%.
A golf ball having a core, an intermediate layer and outer cover layer and wherein;
- 1) the intermediate layer comprises a blend composition of;
- (A) from about 50 to about 95 wt % (based on the combined weight of Components A and B) of a polyamide;
- and
- (B) from about 5 to about 50 wt % (based on the combined weight of Components A and B) of one or more functional polymer modifiers selected from the group consisting of a copolymer having a glycidyl group, hydroxyl group, maleic anhydride group or carboxylic group, or a terpolymer having a glycidyl group, hydroxyl group, maleic anhydride group or carboxylic group, and mixtures thereof;
- and wherein said blend composition has a flexural modulus of from about 5 to about 500 kpsi, a Shore D hardness of from about 25 to about 85, and a tensile elongation of at least about 20%;
- and
- 2) the outer cover layer comprises one or more thermoset polyurethane, thermoset polyurea, thermoplastic polyurethane, thermoplastic polyurea, ionomer, block copolymer, ethylene/(meth)acrylic acid copolymer, or ethylene/(meth)acrylic acid/alkyl (meth)acrylate terpolymer.
A golf ball having a core, an inner intermediate layer, an outer intermediate layer and an outer cover layer and wherein;
- 1) one or both of the inner and outer intermediate layers comprises a blend composition of;
- (A) from about 50 to about 95 wt % (based on the combined weight of Components A and B) of a polyamide;
- and
- (B) from about 5 to about 50 wt % (based on the combined weight of Components A and B) of one or more functional polymer modifiers selected from the group consisting of a copolymer having a glycidyl group, hydroxyl group, maleic anhydride group or carboxylic group, or a terpolymer having a glycidyl group, hydroxyl group, maleic anhydride group or carboxylic group, and mixtures thereof;
- and wherein said blend composition has a flexural modulus of from about 5 to about 500 kpsi, a Shore D hardness of from about 25 to about 85, and a tensile elongation of at least about 20%;
- and
- 2) the outer cover layer comprises one or more thermoset polyurethane, thermoset polyurea, thermoplastic polyurethane, thermoplastic polyurea, ionomer, block copolymer, ethylene/(meth)acrylic acid copolymer, or ethylene/(meth)acrylic acid/alkyl (meth)acrylate terpolymer.
Dependencies are inferred from the claim text.