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US 2003/0228937 A1Published application
Thermosetting polyurethane material for a golf ball cover
AssigneeCallaway Golf Company
InventorPijush K. Dewanjee
Life of this patent
Estimating the term…
Abstract
A curative blend for a thermosetting polyurethane material that allows for a polyurethane material with greater durability is disclosed herein. The curative blend is preferably composed of N,N″-dialkylamino-diphenyl-methane in an amount of 25 to 75 parts per one hundred parts of the curative blend and 4,4″-methylenebis-(2,6-diethyl)-aniline in an amount of 25 to 75 parts per one hundred parts of the curative blend. A preferred polyurethane prepolymer is polytetramethylene ether glycol terminated toluene diisocyanate prepolymer. The thermosetting polyurethane is preferably utilized as a cover for a golf ball. The cover is preferably formed over a core and boundary layer.
Claims12
A golf ball comprising:
- a core;
- and
- a cover formed over the core, the cover composed of a thermosetting polyurethane material formed from reactants comprising at least one polyurethane prepolymer and a curative blend comprising N,N″-dialkylamino-diphenyl-methane and a second curing agent;
- wherein the cover has an aerodynamic surface geometry thereon.
1 more element
A golf ball comprising:
- a core comprising a polybutadiene mixture;
- a boundary layer formed over the core;
- and
- a cover formed over the boundary layer, the cover composed of a thermosetting polyurethane material formed from reactants comprising at least one polyurethane prepolymer and a curative blend comprising N,N″-dialkylamino-diphenyl-methane in an amount of 25 to 75 parts per one hundred parts of the curative blend and 4,4″-methylenebis-(2,6-diethyl)-aniline in an amount of 25 to 75 parts per one hundred parts of the curative blend;
- wherein the cover has an aerodynamic surface geometry thereon.
2 more elements
A golf ball comprising:
- a core;
- and
- a cover formed over the boundary layer, the cover composed of a thermosetting polyurethane material formed from reactants comprising polytetramethylene ether glycol terminated toluene diisocyanate prepolymer and a curative blend comprising N,N″-dialkylamino-diphenyl-methane in an amount of 25 to 75 parts per one hundred parts of the curative blend and 4,4″-methylenebis-(2,6-diethyl)-aniline in an amount of 25 to 75 parts per one hundred parts of the curative blend;
- wherein the cover has an aerodynamic surface geometry thereon.
1 more element
A golf ball comprising:
- a solid core comprising a polybutadiene mixture;
- a boundary layer formed over the core, the boundary layer comprising a blend of ionomer materials;
- and
- a cover formed over the boundary layer, the cover composed of a thermosetting polyurethane material formed from reactants comprising polytetramethylene ether glycol terminated toluene diisocyanate prepolymer and a curative blend comprising N,N″-dialkylamino-diphenyl-methane in an amount of 25 to 75 parts per one hundred parts of the curative blend and 4,4″-methylenebis-(2,6-diethyl)-aniline in an amount of 25 to 75 parts per one hundred parts of the curative blend;
- wherein the cover has an aerodynamic surface geometry thereon.
2 more elements
A golf ball comprising:
- a core comprising a polybutadiene mixture, the core having a diameter ranging from 1.35 inches to 1.64 inches and having a PGA compression ranging from 50 to 90;
- a boundary layer formed over the core, the boundary layer composed of a blend of ionomer materials, the boundary layer having a thickness ranging from 0.020 inch to 0.075 inch, the blend of ionomer materials having a Shore D hardness ranging from 50 to 75 as measured according to ASTM-D2240;
- and
- a cover formed over the boundary layer, the cover composed of a thermosetting polyurethane material formed from reactants comprising polytetramethylene ether glycol terminated toluene diisocyanate prepolymer and a curative blend comprising N,N″-dialkylamino-diphenyl-methane in an amount of 25 to 75 parts per one hundred parts of the curative blend and 4,4″-methylenebis-(2,6-diethyl)-aniline in an amount of 25 to 75 parts per one hundred parts of the curative blend, wherein the thermosetting polyurethane material has a Shore D hardness ranging from 30 to 60 as measured according to ASTM-D2240, a thickness ranging from 0.015 inch to 0.044 inch, and an aerodynamic surface geometry thereon.
1 more element
A method for forming a cover for a golf ball, the method comprising:
- blending N,N″-dialkylamino-diphenyl-methane in an amount of 25 to 75 parts per one hundred parts of a curative blend and 4,4″-methylenebis-(2,6-diethyl)-aniline in an amount of 25 to 75 parts per one hundred parts of the curative blend to form the curative blend;
- mixing the curative blend with a polyurethane prepolymer in a mixing chamber to create pre-polyurethane mixture;
- dispensing the pre-polyurethane mixture into a first hemispherical cavity and a second hemispherical cavity;
- placing a golf ball precursor product into the first hemispherical cavity with the pre-polyurethane mixture therein;
- mating the first hemispherical cavity with the second hemispherical cavity;
- and curing the pre-polyurethane mixture to create a polyurethane cover on the golf ball precursor product.
3 more elements
A golf ball comprising:
- a core;
- and
- a cover formed over the core, the cover composed of a thermosetting polyurethane material formed from reactants comprising at least one polyurethane prepolymer and a curative blend comprising a first curing agent in an amount of 25 to 75 parts per one hundred parts of the curative blend and a second curing agent in an amount of 25 to 75 parts per one hundred parts of the curative blend, wherein the first curing agent and the second curing agent each have the same equivalent weight;
- wherein the cover has an aerodynamic surface geometry thereon.
1 more element
Dependencies are inferred from the claim text.