Abstract:
A golf ball comprising a single layer core formed from a substantially homogenous formulation and comprising a geometric center and an outer surface; a hardness of the outer surface is greater than a hardness of the geometric center. An inner core region is disposed about the geometric center and has a first hardness that is less than those of the geometric center and the outer surface; an outer core region is adjacent the outer surface and has a second hardness that is greater than those of the geometric center and the outer surface; and an intermediate core region is disposed between the inner and outer core regions and extends radially from about 5 mm to about 15.75 mm from the geometric center and has at least a third hardness and a fourth hardness, each of which are related to the first hardness and the second hardness in various ways.
Abstract:
Golf ball multi-layered core sub-assemblies and the resulting golf balls are provided. The core structure includes a foam inner core (center); and intermediate and outer core layers. Foamed polyurethane is preferably used to make the inner core. The intermediate and outer core layers are preferably made from non-foamed thermoplastic compositions such as ethylene acid copolymer ionomer. In an alternative version, the intermediate core layer may be made of a thermoset rubber such as polybutadiene. The core layers have different hardness and specific gravity levels. The core structure and resulting ball have relatively good resiliency.
Abstract:
Multi-layer golf balls comprising a center, intermediate layer, and cover are disclosed. The center is formed from a highly-neutralized acid copolymer composition.
Abstract:
The invention relates to golf ball formulations formed from blends of linear and branched polybutadienes catalyzed with neodymium that have improved properties and processing characteristics. Golf ball components may be formed from the blends to provide high coefficient of restitution.
Abstract:
Golf ball comprising a core, a cover disposed the core, and at least two coating layers surrounding the cover. At least one of the coating layers is a color effects coating layer disposed between the cover and an outer coating layer and comprising a color effects providing composition formed from a mixture of a mica-based luster pigment consisting of a metal oxide coated mica in an amount of from about 5 wt. % to about 50 wt. % of the color effects providing composition and titanium dioxide coated alumina in an amount of from about 50 wt. % to about 95 wt. % thereof. The color effects coating layer comprises the color effects providing composition in an amount of from about 1% to about 30% of total resin solids, and the color effects providing composition is formed from metal oxide coated mica and titanium dioxide coated alumina in a wt. ratio of from about 1:1 to about 1:19.
Abstract:
A golf ball comprising: an inner core having a compression of less than about 60, wherein the inner core comprises a highly neutralized thermoplastic ionomer; at least one intermediate layer surrounding the inner core, having a hardness of at least about 55 Shore D, a specific gravity and a flexural modulus such that each of the hardness, specific gravity and flexural modulus of the intermediate layer is greater than a hardness, a specific gravity, and a flexural modulus of the inner core; and a cover surrounding the at least one intermediate layer, having a flexural modulus and a Shore D hardness that are greater than a flexural modulus and a hardness of the inner core, and a Shore D hardness of the cover is at least 60.
Abstract:
The present invention provides golf balls having a rubber core, and a cover layer made from a thermoset polyurethane of polyurethane-urea that is the reaction product of a polyisocyanate with moisture-resistant polyol and curing agent. An intermediate layer, formed from an olefin-based acid copolymer ionomer composition and preferably an ethylene acid copolymer, is disposed between the rubber core and cover. The moisture-resistant polyol is preferably a reaction product of dimer acid or dimer ester and a polyolefin diol, or a polybutadiene polyol, or a polyisoprene. Preferably, the cover layer has a moisture vapor transmission rate (MVTR) between 3 grams·mm/m2·day to 4 grams·mm/m2·day.
Abstract:
Multi-piece golf balls containing a multi-layered core structure are provided. The core structure includes a small, heavy inner core (center) having a relatively high specific gravity, an intermediate core layer, and a surrounding outer core layer. The layers of the core structure may have different hardness gradients. In one preferred embodiment, each core layer has a positive hardness gradient. The center of the core comprises a metal material such as copper, steel, brass, tungsten, titanium, aluminum, and alloys thereof. The intermediate core layer is preferably formed from a thermoset composition such as polybutadiene rubber, and the outer core layer is preferably formed from a thermoplastic composition such as an ethylene acid copolymer. The resulting ball has high resiliency and good spin control.
Abstract:
Multi-piece golf balls containing a multi-layered core structure are provided. The core structure includes a small, heavy inner core (center) having a relatively high specific gravity, an intermediate core layer, and a surrounding outer core layer. The layers of the core structure may have different hardness gradients. In one preferred embodiment, each core layer has a positive hardness gradient. The center of the core comprises a metal material such as copper, steel, brass, tungsten, titanium, aluminum, and alloys thereof. The intermediate core layer is preferably formed from a first thermoset composition such as polybutadiene rubber, and the outer core layer is preferably formed from a second thermoset composition. The resulting ball has high resiliency and good spin control.
Abstract:
Golf balls having multi-layered covers are provided. The cover includes an inner cover layer made of an ionomer composition; an intermediate cover layer made of an aromatic polyurethane composition; and outer cover layer made of an aliphatic polyurethane composition, wherein the total thickness of the multi-layered cover is no greater than 0.110 inches. Preferably, the thickness of the inner cover layer is 0.010 to 0.050 inches; the thickness of the intermediate cover layer is 0.010 to 0.040 inches; and thickness of the outer cover layer is 0.004 to 0.020 inches. The invention also includes methods for making such multi-layered covers. The resulting ball has good light-stability, cut/shear-resistance, and impact durability.