摘要:
This invention is directed to A composition for forming a golf ball, the composition comprising polyurethane gel composite particles and at least one base material selected from the group consisting of synthetic resins and elastomers, the polyurethane gel composite particles consisting of colloidal polyurea particles precipitated from a non-aqueous solvent solution of colloidal polyurea and polyurethane gel particles covered with the polyurea particles, the polyurethane gel particles being three-dimensionally crosslinked and each of the polyurethane gel particles being formed of a polyisocyanate compound and a polyethylene oxide group-free, active-hydrogen-containing compound, at least one of the compounds being trifunctional or higher valency, and is also directed to a multi-piece golf ball having one or more layers formed of this composition.
摘要:
A multi-piece golf ball has a core (3), an interlayer (5), and a cover (7), the core (3) being provided with a spherical main part (31) and a plurality of ribs (32) formed on the main part (31), the interlayer (5) being accommodated in depressions (33) surrounded by the ribs (32) and having a thickness substantially the same as the height of the ribs (32), each of the ribs (32) extending in such a manner that the width thereof becomes greater from the cover towards the core, each of the depressions (33) being formed into a cone-like shape by side faces of the ribs (32), and the hardness of the interlayer (5) being less than that of the core (3). This structure achieves satisfactory soft feeling and high bounce resilience.
摘要:
An object of the present invention is to provide a golf ball having excellent scuff resistance and spin performance, and a satisfactory rebound property. The golf ball has a core 3, an intermediate layer 5 covering the core 3, an inner cover 7 covering the intermediate layer 5, and an outer cover 15 covering the inner cover 7, wherein the outer cover 15 includes a neutralized product containing an ethylene-unsaturated carboxylic acid-alkyl(meth)acrylate ternary copolymer having a weight average molecular weight (Mw) of 80,000 to 500,000 and an ethylene-acrylic acid or ethylene-methacrylic acid copolymer having a weight average molecular weight (Mw) of 2,000 to 30,000, and the inner cover 7 also includes the neutralized product.
摘要:
A multi-piece golf ball has a core 3, an interlayer 5, and a cover 7, the core 3 having a spherical main part 9 and a plurality of ribs 11 provided on the surface of the main part 9, the interlayer 5 being inserted into depressions surrounded by the ribs 11, and the hardness of the interlayer 5 being less than that of the core 3. The multi-piece golf ball can achieve an especially long carry distance.
摘要:
The present invention relates to a high-strength golf ball comprising a core having a main core and optionally a sub-core comprising one or more layers, and a cover having one or more layers; and to a high-strength golf ball comprising a core having a main core and optionally a sub-core comprising one or more layers, an interlayer having one or more layers, and a cover having one or more layers; wherein at least one of the portions contains at least one member selected from the group consisting of carbon nanotubes and fullerenes.
摘要:
A golf ball comprising a core (1), intermediate layer (3), and cover (5), wherein the intermediate layer (3) is provided with a plurality of apertures through which the core (1) is exposed, wherein the outer surface of the intermediate layer (3) and the surface of the core (1) exposed through the apertures are on substantially the same spherical surface, and wherein the hardness of the intermediate layer (3) is greater than that of the core (1). The golf ball achieves both a high ball resilience and a soft impact feel.
摘要:
The present invention provides a multi-piece golf ball comprising a core 3, a first intermediate layer 5, a second intermediate layer 7, and a cover 9, wherein the first intermediate layer 5 comprises a plurality of ribs 51 formed on the core 3; the second intermediate layer 7 is placed in concave portions surrounded by the ribs 51; and the cover 9 forms an outermost layer; with each of the ribs extending so that its width increases from the cover side to the core side; the concave portions being shaped into a funnel-like form by the side surfaces of the ribs; the hardness of the core 3, the first intermediate layer 5 and the second intermediate layer 7 being different from each other; and the hardness of the first intermediate layer 5 being greater than that of the second intermediate layer 9.
摘要:
A multi-piece golf ball has a core (3), an interlayer (5), and a cover (7), the core (3) being provided with a spherical main part (31) and a plurality of ribs (32) formed on the main part (31), the interlayer (5) being accommodated in depressions (33) surrounded by the ribs (32) and having a thickness substantially the same as the height of the ribs (32), each of the ribs (32) extending in such a manner that the width thereof becomes greater from the cover towards the core, each of the depressions (33) being formed into a cone-like shape by side faces of the ribs (32), and the hardness of the interlayer (5) being less than that of the core (3). This structure achieves satisfactory soft feeling and high bounce resilience.
摘要:
A multi-piece golf ball has a core 3, an interlayer 5, and a cover 7, the core 3 having a spherical main part 9 and a plurality of ribs 11 provided on the surface of the main part 9, the interlayer 5 being inserted into depressions surrounded by the ribs 11, and the hardness of the interlayer 5 being less than that of the core 3. The multi-piece golf ball can achieve an especially long carry distance.
摘要:
A golf ball comprising a spherical core (1) and a cover (3) covering the spherical core (1), wherein the core (1) is provided with grooves (5) along three great circles drawn on the surface of the core (1) so as to intersect each other at right angles, and projections (9) engaging in the grooves (5) are provided on the inner surface of the cover (3). A golf ball with such a structure has both high resilience and soft feel when hit.