Golf ball with ionomeric cover and method of making same
AssigneeLisco, Inc.
InventorMichael J. Sullivan
Life of this patent
Estimating the term…
Abstract
Disclosed herein is a golf ball having a scuff-resistant, soft cover formed from more than 90 wt. % of one or more acrylate ester-containing ionomeric resins. The acrylate ester-containing ionomeric resins preferably are terpolymers. The golf ball has good durability and a high spin rate. A method of making the golf ball also is disclosed.
Claims37
A golf ball having a core and a cover, the cover comprising an ionomeric resin in which the ionomeric resin contains at least 95 wt % of one or more copolymers formed from (a) ethylene, (b) methyl acrylate, and (c) acrylic acid, said one or more copolymers being based upon one or more unneutralized copolymers with a mass average acid number of about 45 or less, the cover having a Shore D hardness of about 40-64, the golf ball having a coefficient of restitution of at least 0.770 and a scuff resistance rating of no higher than 2.5.
A method of making a golf ball having a core and a cover, comprising the steps of:
- obtaining a golf ball core, forming a scuff-resistant cover over the core, the cover being formed from at least 99 wt % of one or more copolymers which are formed from (a) ethylene, (b) methyl acrylate, and (c) acrylic acid, said one or more copolymers being based upon one or more unneutralized copolymers with a mass average acid number of about 45 or less, the cover having a Shore D hardness of about 40-64, the golf ball having a coefficient of restitution of at least 0.770 and a scuff resistance rating of no higher than 2.5.
A golf ball comprising a core and a cover consisting essentially of an ionomeric resin in which the ionomeric resin contains at least 95 wt % of one or more terpolymers which are formed from ethylene, acrylic acid, and methyl acrylate, the cover having a Shore D hardness of about 40-64, said one or more terpolymers being based upon one or more unneutralized terpolymers with a mass average acid number of about 45 or less.
A method of making a golf ball having a core and a cover, comprising the steps of:
- obtaining a golf ball core,
- forming a cover over the core, the cover consisting essentially of an ionomeric resin in which the ionomeric resin contains at least 95 wt % of one or more terpolymers of ethylene, methyl acrylate, and acrylic acid, the acrylic acid being neutralized with cations, said one or more terpolymers being based upon one or more unneutralized terpolymers with a mass average acid number of about 45 or less, the cover having a Shore D hardness of 40-64.
A golf ball having a core and a scuff-resistant cover, the cover consisting essentially of an ionomeric resin in which the ionomeric resin contains at least 95 wt % of one or more copolymers formed from (a) ethylene, (b) methyl acrylate, and (c) acrylic acid with a portion of the acrylic acid being neutralized with cations, the cover having a Shore D hardness of 40-64, said one or more copolymers being based upon one or more unneutralized copolymers with a mass average acid number of about 45 or less.
A golf ball comprising a core and a cover comprising an ionomeric resin in which the ionomeric resin contains at least 95 wt % of one or more terpolymers which are formed from ethylene, acrylic acid, and methyl acrylate, said cover having a Shore D hardness of about 40-64 and being based upon one or more unneutralized terpolymers with a mass average acid number of about 45 or less, the golf ball having a coefficient of restitution of at least 0.770 and a scuff resistance rating of no higher than 2.5.
Dependencies are inferred from the claim text.