摘要:
An object of the present invention is to provide a golf ball having an excellent properties like flight distance and low temperature durability. The present invention provides a golf ball comprising: a core consisting of a center and one or more intermediate layers covering the center; and a cover covering the core, wherein at least one piece or one layer of said intermediate layers is formed from a highly elastic intermediate layer composition that contains (A) a highly elastic polyamide resin having a flexural modulus in a range from 700 MPa to 5,000 MPa; (B) a metal-neutralized product of ethylene-(meth)acrylic acid copolymer and (C) a resin having a polar functional group in a specific way.
摘要:
An object of the present invention is to provide a golf ball excellent in fluidity, adhesion of the paint film, and repulsion. Another object of the present invention is to provide a golf ball which is excellent in durability and low-temperature durability. The present invention provides a golf ball comprising: a core and a cover covering the core, wherein the cover is formed from a cover composition that contains as a resin component, (a) a specific high melt viscosity ionomer resin being neutralized with at least two metal ions, and (b) a low melt viscosity ionomer resin being neutralized with at least two metal ions, in a ratio of (a) the high melt viscosity ionomer resin/(b) the low melt viscosity ionomer resin being 55 mass % to 99 mass %/45 mass % to 1 mass %, wherein at least one of metal ions neutralizing carboxyl groups of (a) the high melt viscosity ionomer resin and/or (b) the low melt viscosity ionomer resin is a divalent metal ion and a content of the divalent metal ion per 100 g of the resin component is at least 0.020 mole.
摘要:
An object of the invention is to provide a golf ball excellent in the durability at the normal and low temperatures, flight distance, direction stability and shot feeling on the shots. The present invention provides a golf ball comprising: a core consisting of a center having a diameter of 35 mm or less and a surrounding layer covering the center; at least one intermediate layer covering the core, said intermediate layer having a thickness ranging from 0.5 mm to 1.2 mm and a density of 1.10 g/cm3 or more; and a cover covering the intermediate layer and having a thickness ranging from 0.3 mm to 1.0 mm, wherein the cover is formed of a cover composition that has a slab hardness ranging from 65 to 75 in Shore D hardness and contains as a resin component; (A) a polyamide resin composition having a flexural modulus in a range from 700 MPa to 4,000 MPa and a melt flow rate (240° C., 2.16 kg) of 5.0 g/10 min or more; (B) at least one member selected from the group consisting of an ethylene-(meth)acrylic acid binary copolymer, a metal-neutralized product of the binary copolymer, an ethylene-(meth)acrylic acid-(meth)acrylic acid ester ternary copolymer, and a metal-neutralized product of the ternary copolymer; and (C) a fluidity improving agent.
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:
An objective of the present invention is to provide a golf ball striking a balance between the flight distance on the driver shots and the approach performance on the approach shots and having the excellent shot feeling and durability. The present invention provides a golf ball comprising a core consisting of a center and a surrounding layer covering the center; at least one intermediate layer covering the core; and a cover covering the intermediate layer; wherein at least one piece or one layer of the intermediate layer is formed from a highly elastic intermediate layer composition that contains (A) a highly elastic resin having a flexural modulus in a range from 700 MPa to 5,000 MPa and (B) an ionomer resin having a flexural modulus in a range from 150 MPa to 1,000 MPa in a content ratio ((A)/(B)) of (A) the highly elastic resin to (B) the ionomer resin (B) being (20 mass % to 80 mass %)/(80 mass % to 20 mass %) (the total is 100 mass %), and wherein a surface hardness (Hm) of the intermediate layer and a surface hardness (Hs) of the core satisfy the equation: Hm≧Hs, and the cover has a slab hardness (Hc) of 45 or less in Shore D hardness.
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.
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. The ionomer composition for a golf ball of the present invention comprises a polymer containing at least following component as a constituent component: First component: an olefin monomer having 2 to 8 carbon atoms; Second component: an unsaturated carboxylic acid having 2 to 18 carbon atoms; and Third component: a diene or a diene polymer, wherein at least 10 mole % of the carboxyl group in the polymer is neutralized with an inorganic metal compound.
摘要:
An object of the present invention is to provide a golf ball providing a great distance. Another object of the present invention is to provide a golf ball striking a balance between a flight distance on a driver shot and an approach performance on an approach shot while providing an excellent shot feeling. The present invention provides a golf ball comprising: a center, a cover and at least one intermediate layer disposed between the center and the cover, wherein at least one piece or one layer of the intermediate layer is formed from a high fluidity intermediate layer composition that contains (A) a polyamide resin composition having a flexural modulus in a range from 700 MPa to 4,000 MPa; (B) at least one member selected from the group consisting of an ethylene-(meth)acrylic acid binary copolymer, a metal-neutralized product of the binary copolymer, an ethylene-(meth)acrylic acid-(meth)acrylic acid ester ternary copolymer, and a metal-neutralized product of the ternary copolymer, and (C) a fluidity improving agent.
摘要:
An object of the present invention is to provide a golf ball excellent in resilience and durability, with a good moldability of the intermediate layer. The present invention provides a golf ball having a center, a cover, and an intermediate layer disposed between the center and the cover, wherein the intermediate layer is formed from an intermediate layer composition having a flexural modulus ranging from 150 MPa to 450 MPa, a maximum loss factor (tan δ) between −20° C. and 0° C. of 0.08 or less, a rebound resilience of 55% or more, and a slab hardness ranging from 40 to 60 in Shore D hardness, and the intermediate layer composition comprises, as a resin component, 30 mass % to 70 mass % of (A) a modified polyester elastomer having a Shore A hardness of 95 or less; 70 mass % to 30 mass % of (B) a binary ionomer resin having a Shore D hardness of 65 or more, a flexural modulus of 300 MPa or more, and a melt flow rate (190° C., 2.16 kg) of 1.0 g/10 min or more; and 0 mass % to 50 mass % of (C) a thermoplastic resin other than (A) component and (B) component (provided that a total content of (A) component, (B) component, and (C) component is 100 mass %).
摘要翻译:本发明的目的是提供一种弹性和耐久性优异的高尔夫球,并且具有良好的中间层成形性。 本发明提供了一种高尔夫球,其具有设置在中心和盖之间的中心,盖和中间层,其中中间层由弯曲模量为150MPa至450MPa的中间层组合物形成, -20℃和0℃之间的最大损耗因子(tanδ)为0.08以下,回弹性为55%以上,板状硬度为肖氏D硬度为40〜60,中间层 作为树脂成分,作为树脂成分,含有30质量%〜70质量%的(A)肖氏A硬度为95以下的改性聚酯弹性体, (B)肖氏D硬度为65以上,弯曲弹性模量为300MPa以上,熔体流动速率(190℃,2.16kg)的二元离聚物树脂为70质量%〜30质量% g / 10分钟以上; 和(A)成分和(B)成分以外的(C)热塑性树脂的0质量%〜50质量%(条件是(A)成分,(B)成分和(C)成分的总含量为100 质量%)。
摘要:
An object of the present invention is to provide a golf ball providing a great distance. The present invention provides a golf ball comprising: a core consisting of a center and one or more intermediate layers covering the center; and a cover covering the core, wherein at least one of said intermediate layers is formed from a high fluidity intermediate layer composition that contains (A) a polyamide resin composition having a flexural modulus in a range from 500 MPa to 4,000 MPa and a melt flow rate (240° C., 2.16 kg) of 5.0 g/10 min or more, and (B) at least one member selected from the group consisting of an ethylene-(meth)acrylic acid binary copolymer, a metal-neutralized product of the binary copolymer, an ethylene-(meth)acrylic acid-(meth)acrylic acid ester ternary copolymer, and a metal-neutralized product of the ternary copolymer.