摘要:
The object of the present invention is to improve the resilience and the shot feeling of the golf ball to be obtained by reducing the content of trans-1,4-bond in a golf ball using for a core a polybutadiene having a high content of cis-1,4-bond. The golf ball of the present invention has a core comprising at least one layer or more and a cover covering the core, at least one layer of the core obtained by molding a rubber composition containing (a) a base rubber containing a polybutadiene obtained by polymerizing 1,3-butadiene in the presence of a catalyst containing a metallosalen complex and aluminoxane, (b) a co-crosslinking agent, and (c) a crosslinking agent.
摘要:
The object of the present invention is to improve the resilience and the shot feeling of the golf ball to be obtained by reducing the content of trans-1,4-bond in a golf ball using for a core a polybutadiene having a high content of cis-1,4-bond. The golf ball of the present invention has a core comprising at least one layer or more and a cover covering the core, at least one layer of the core obtained by molding a rubber composition containing (a) a base rubber containing a polybutadiene obtained by polymerizing 1,3-butadiene in the presence of a catalyst containing a metallosalen complex and aluminoxane, (b) a co-crosslinking agent, and (c) a crosslinking agent.
摘要:
The object of the present invention is to improve the resilience and the durability of the golf ball to be obtained by reducing the content of trans-1,4-bond in a one-piece golf ball using a polybutadiene having a high content of cis-1,4-bond. The one-piece golf ball of the present invention is obtained by molding a rubber composition containing (a) a base rubber containing a polydiene obtained by polymerizing diene in the presence of a catalyst containing a metallosalen complex and aluminoxane, (b) a co-crosslinking agent, and (c) a crosslinking agent.
摘要:
The object of the present invention is to improve the resilience and the durability of the golf ball to be obtained by reducing the content of trans-1,4-bond in a one-piece golf ball using a polybutadiene having a high content of cis-1,4-bond. The one-piece golf ball of the present invention is obtained by molding a rubber composition containing (a) a base rubber containing a polydiene obtained by polymerizing diene in the presence of a catalyst containing a metallosalen complex and aluminoxane, (b) a co-crosslinking agent, and (c) a crosslinking agent.
摘要:
An object of the present invention is to provide a golf ball which travels a great distance on the driver shots and stops quickly on the green on the approach shots. The present invention is directed to a golf ball material having a shear loss modulus G″ of 2.11×107 Pa or less, and a ratio (E″/G″) of a tensile loss modulus E″ to the shear loss modulus G″ of 1.78 or more, when measuring the shear loss modulus G″ in a shear mode and the tensile loss modulus E″ in a tensile mode at conditions of a temperature of 0° C., oscillation frequency of 10 Hz using a dynamic viscoelasticity measuring apparatus.
摘要:
An object of the present invention is to provide a golf ball which has an increased dry spin rate and wet spin rate on approach shots without sacrificing the processability into the cover. The present invention provides a golf ball cover material having shear loss moduli G1″ (Pa), G2″ (Pa), and G3″ (Pa) that satisfy following equations when measured using a dynamic viscoelasticity measuring apparatus at following conditions. log G1″≦7.09 (1) log G2″≧7.17 (2) log G3″≦7.14 (3) G1″ measuring conditions: shear mode, oscillation frequency: 10 Hz, temperature: 0° C., strain: 0.05%; G2″ measuring conditions: shear mode, oscillation frequency: 10 Hz, temperature: −30° C., strain: 0.05%; and G3″ measuring conditions: shear mode, oscillation frequency: 10 Hz, temperature: 0° C., strain: 5%.
摘要:
A golf ball exhibits excellent abrasion-resistance and resilience. A golf ball of the present invention includes: a core; and a cover covering the core, wherein the cover is formed of a cover composition containing a (meth)acrylic polymer-modified silicate and a resin component.
摘要:
A golf ball 2 includes a center 12, a mid layer 14, a reinforcing layer 6, a cover 8 and a paint layer 10. The golf ball 2 has a large number of dimples 16 on the surface thereof. The cover 8 is formed of a resin composition including thermoplastic polyurethane (A) and a polyisocyanate mixture (B). The polyisocyanate mixture (B) includes a urethane prepolymer (B1) having two or more isocyanate groups or an isocyanate compound (B2) having three or more isocyanate groups. The polyisocyanate composition (B) further includes a thermoplastic resin (B3) which substantially does not react with an isocyanate goup. The golf ball 2 is obtained by a mold having protrusions which projects from the equator of the mold. Each protrusion includes a part of a pimple.
摘要:
The invention provides a golf ball excellent in abrasion resistance and a repulsion property. The present invention provides a golf ball comprising a core and a cover covering the core, wherein the cover is made from a cover composition containing, as a resin component, a thermoplastic polyurethane (A) having no ionic group; at least one kind of thermoplastic resin (B) selected from the group consisting of a binary copolymer of an olefin and an unsaturated carboxylic acid, a tertiary copolymer of an olefin, an unsaturated carboxylic acid and an unsaturated carboxylic acid ester, and neutralized products thereof; and an acid group-containing polyurethane and/or a neutralized product thereof (C).
摘要:
The present invention provides an ionomer composition for a golf ball providing a golf ball which is excellent in abrasion-resistance, durability and resilience, and a golf ball using the same. An ionomer composition for a golf ball of the present invention comprises a binary copolymer obtained by copolymerizing an olefin monomer having 2 to 8 carbon atoms with an unsaturated monomer having an acid functional group and/or a ternary copolymer obtained by copolymerizing an olefin monomer having 2 to 8 carbon atoms, an unsaturated monomer having an acid functional group and an unsaturated carboxylic acid ester, wherein a functional group is introduced in both terminals of the copolymers.