Golf ball resin composition and golf ball

1. A golf ball resin composition comprising

(A) 100 parts by mass of at least one resin component selected from the group consisting of (a-1) a binary copolymer composed of an olefin and an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms, (a-2) an ionomer resin consisting of 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, (a-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 (a-4) an ionomer resin consisting of 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,

(B) 1 part to 25 parts by mass of a phosphate ester and/or a salt thereof, and

(C) 0 part to 200 parts by mass of a basic inorganic metal compound,

wherein (B) the phosphate ester and/or the salt thereof includes a mixture of a phosphatidic acid, a derivative of the phosphatidic acid, and a derivative of a lysophosphatidic acid.

2. The golf ball resin composition according to claim 1 , wherein the derivative of the lysophosphatidic acid includes lysophosphatidylcholine.

3. The golf ball resin composition according to claim 1 , wherein (C) the basic inorganic metal compound includes a basic magnesium compound.

4. The golf ball resin composition according to claim 1 , wherein (a-4) the ionomer resin neutralized with a magnesium ion is used as (A) the resin component.

5. The golf ball resin composition according to claim 1 , wherein the golf ball resin composition has a total neutralization degree represented by a following formula of 53% or more and 1,000% or less:

Total Neutralization Degree (%)=100×[number of moles of a cation component in ( A ) the resin component×valence of the cation component+number of moles of a cation component in ( B ) the phosphate ester and/or the salt thereof×valence of the cation component+number of moles of the metal component in ( C ) the basic inorganic metal compound×valence of the metal component]/[number of moles of the carboxyl group in ( A ) the resin component+number of moles of an anion-forming group in ( B ) the phosphate ester and/or the salt thereof x valence of the anion-forming group].

6. The golf ball resin composition according to claim 1 , wherein the golf ball resin composition has a slab hardness ranging from 1 to 99 in Shore D hardness.

7. The golf ball resin composition according to claim 1 , wherein the golf ball resin composition contains (B) the phosphate ester and/or the salt thereof in a content ranging from 3 parts by mass to 15 parts by mass with respect to 100 parts by mass of (A) the resin component.

8. The golf ball resin composition according to claim 1 , wherein the golf ball resin composition is prepared by dry blending (A) the resin component, (B) the phosphate ester and/or the salt thereof, and (C) the basic metal compound if necessary.

9. The golf ball resin composition according to claim 1 , wherein the golf ball resin composition has a melt flow rate (190° C., 2.16 kg) of 0.01 g/10 min or more and 0.40 g/10 min or less.

10. A golf ball having a constituent member formed from a golf ball resin composition comprising

(A) 100 parts by mass of at least one resin component selected from the group consisting of (a-1) a binary copolymer composed of an olefin and an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms, (a-2) an ionomer resin consisting of 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, (a-3) a ternary copolymer composed of an olefin, an α,β-unsaturated carboxylic acid ester, and an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms, and (a-4) an ionomer resin consisting of a metal ion neutralized product of a ternary copolymer composed of an olefin, an α,β-unsaturated carboxylic acid ester, and an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms,

(B) 1 part to 25 parts by mass of a phosphate ester and/or a salt thereof; and

(C) 0 part to 200 parts by mass of a basic inorganic metal compound,

wherein (B) the phosphate ester and/or the salt thereof includes a mixture of a phosphatidic acid, a derivative of the phosphatidic acid, and a derivative of a lysophosphatidic acid.

11. The golf ball according to claim 10 , wherein the derivative of the lysophosphatidic acid includes lysophosphatidylcholine.

12. The golf ball according to claim 10 , wherein the golf ball resin composition has a melt flow rate (190° C., 2.16 kg) of 0.01 g/10 min or more and 0.40 g/10 min or less.

13. A golf ball comprising a core composed of at least one layer and a cover covering the core, wherein at least one layer of the core is formed from a golf ball resin composition comprising

(A) 100 parts by mass of at least one resin component selected from the group consisting of (a-1) a binary copolymer composed of an olefin and an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms, (a-2) an ionomer resin consisting of 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, (a-3) a ternary copolymer composed of an olefin, an α,β-unsaturated carboxylic acid ester, and an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms, and (a-4) an ionomer resin consisting of a metal ion neutralized product of a ternary copolymer composed of an olefin, an α,β-unsaturated carboxylic acid ester, and an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms,

(B) 1 part to 25 parts by mass of a phosphate ester and/or a salt thereof; and

(C) 0 part to 200 parts by mass of a basic inorganic metal compound,

wherein (B) the phosphate ester and/or the salt thereof includes a mixture of a phosphatidic acid, a derivative of the phosphatidic acid, and a derivative of a lysophosphatidic acid.

14. The golf ball according to claim 13 , wherein the derivative of the lysophosphatidic acid includes lysophosphatidylcholine.

15. The golf ball according to claim 13 , wherein the golf ball resin composition has a melt flow rate (190° C., 2.16 kg) of 0.01 g/10 min or more and 0.40 g/10 min or less.

16. A golf ball comprising a core composed of at least one layer and a cover covering the core, wherein the cover is formed from a golf ball resin composition comprising

(A) 100 parts by mass of at least one resin component selected from the group consisting of (a-1) a binary copolymer composed of an olefin and an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms, (a-2) an ionomer resin consisting of 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, (a-3) a ternary copolymer composed of an olefin, an α,β-unsaturated carboxylic acid ester, and an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms, and (a-4) an ionomer resin consisting of a metal ion neutralized product of a ternary copolymer composed of an olefin, an α,β-unsaturated carboxylic acid ester, and an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms,

(B) 1 part to 25 parts by mass of a phosphate ester and/or a salt thereof; and

(C) 0 part to 200 parts by mass of a basic inorganic metal compound,

wherein (B) the phosphate ester and/or the salt thereof includes a mixture of a phosphatidic acid, a derivative of the phosphatidic acid, and a derivative of a lysophosphatidic acid.

17. The golf ball according to claim 16 , wherein the derivative of the lysophosphatidic acid includes lysophosphatidylcholine.

18. A one-piece golf ball comprising a golf ball body formed from a golf ball resin composition comprising

(A) 100 parts by mass of at least one resin component selected from the group consisting of (a-1) a binary copolymer composed of an olefin and an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms, (a-2) an ionomer resin consisting of 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, (a-3) a ternary copolymer composed of an olefin, an α,β-unsaturated carboxylic acid ester, and an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms, and (a-4) an ionomer resin consisting of a metal ion neutralized product of a ternary copolymer composed of an olefin, an α,β-unsaturated carboxylic acid ester, and an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms,

(B) 1 part to 25 parts by mass of a phosphate ester and/or a salt thereof; and

(C) 0 part to 200 parts by mass of a basic inorganic metal compound,

wherein (B) the phosphate ester and/or the salt thereof includes a mixture of a phosphatidic acid, a derivative of the phosphatidic acid, and a derivative of a lysophosphatidic acid.

19. The one-piece golf ball according to claim 18 , wherein the derivative of the lysophosphatidic acid includes lysophosphatidylcholine.