Golf ball
First Claim
1. 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 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 containing (a-1) a polyamide resin and (a-2) a resin having at least one functional group selected from the group consisting of a hydroxyl group, a carboxyl group, an anhydride group, a sulfonic acid group, and an epoxy group (including a glycidyl group); 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, andwherein the core has a compression deformation amount of from 1.5 mm to 5.0 mm, when applying an initial load of 98 N to a final load of 1275 N to the core.
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Accused Products
Abstract
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.
55 Citations
19 Claims
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1. A golf ball comprising:
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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 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 containing (a-1) a polyamide resin and (a-2) a resin having at least one functional group selected from the group consisting of a hydroxyl group, a carboxyl group, an anhydride group, a sulfonic acid group, and an epoxy group (including a glycidyl group); 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, and wherein the core has a compression deformation amount of from 1.5 mm to 5.0 mm, when applying an initial load of 98 N to a final load of 1275 N to the core. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification