Golf ball resin composition and golf ball using the same

A golf ball comprising a core, at least one intermediate layer covering the core, and a cover covering the intermediate layer, wherein at least one of the core, at least one intermediate layer or cover is formed from a golf ball resin composition containing:

• (A) a polyamide resin,
• (B) at least one member selected from the group consisting of (b-1) a binary copolymer composed of an olefin and an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms, (b-2) a metal ion-neutralized product of a binary copolymer composed of an olefin and an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms, (b-3) a ternary copolymer composed of an olefin, an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms and an α,β-unsaturated carboxylic acid ester, and (b-4) a metal ion-neutralized product of a ternary copolymer composed of an olefin, an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms and an α,β-unsaturated carboxylic acid ester, and
• (C) an organically modified layered silicate in an amount of 0.1 part by mass to 50 parts by mass with respect to 100 parts by mass of a total of (A) component and (B) component, and
• a fatty acid and/or a metal salt of a fatty acid,
• wherein
• a content of (A) component with respect to 100 mass % of a total of (A) component and (B) component ranges from 15 mass % to 80 mass %,
• a slab hardness of the golf ball resin composition is 65 or more and 80 or less in Shore D hardness,
• a value (X/A) obtained by dividing a flexural modulus X (MPa) of the golf ball resin composition by the content of (A) component (A:
• 15 mass % to 80 mass %) is 12.5 or more, and
• (C) the organically modified layered silicate includes a layered silicate treated with an organic onium ion, and the organic onium ion includes an organic ammonium ion having a total of 11 to 30 intramolecular carbon atoms.

A golf ball resin composition containing:

• (A) a polyamide resin,
• (B) at least one member selected from the group consisting of (b-1) a binary copolymer composed of an olefin and an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms, (b-2) a metal ion-neutralized product of a binary copolymer composed of an olefin and an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms, (b-3) a ternary copolymer composed of an olefin, an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms and an α,β-unsaturated carboxylic acid ester, and (b-4) a metal ion-neutralized product of a ternary copolymer composed of an olefin, an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms and an α,β-unsaturated carboxylic acid ester,
• (C) an organically modified layered silicate, and
• a fatty acid and/or a metal salt of a fatty acid,
• wherein
• a content of (A) component with respect to 100 mass % of a total of (A) component and (B) component ranges from 15 mass % to 80 mass %,
• a slab hardness of the golf ball resin composition is 65 or more and 80 or less in Shore D hardness, and
• a value (X/A) obtained by dividing a flexural modulus X (MPa) of the golf ball resin composition by the content of (A) component (A:
• 15 mass % to 80 mass %) is 12.5 or more.

A golf ball comprising a core, at least one intermediate layer covering the core, and a cover covering the intermediate layer, wherein at least one of the core, at least one intermediate layer or cover is formed from a golf ball resin composition containing:

• (A) a polyamide resin,
• (B) at least one member selected from the group consisting of (b-1) a binary copolymer composed of an olefin and an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms, (b-2) a metal ion-neutralized product of a binary copolymer composed of an olefin and an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms, (b-3) a ternary copolymer composed of an olefin, an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms and an α,β-unsaturated carboxylic acid ester, and (b-4) a metal ion-neutralized product of a ternary copolymer composed of an olefin, an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms and an α,β-unsaturated carboxylic acid ester,
• (C) an organically modified layered silicate, and
• a fatty acid and/or a metal salt of a fatty acid,
• wherein
• a content of (A) component with respect to 100 mass % of a total of (A) component and (B) component ranges from 15 mass % to 80 mass %,
• a slab hardness of the golf ball resin composition is 65 or more and 80 or less in Shore D hardness, and
• a value (X/A) obtained by dividing a flexural modulus X (MPa) of the golf ball resin composition by the content of (A) component (A:
• 15 mass % to 80 mass %) is 12.5 or more.