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Low compression golf balls containing cores made of plasticized thermoplastic compositions

  • US 10,220,262 B2
  • Filed: 09/14/2017
  • Issued: 03/05/2019
  • Est. Priority Date: 01/10/2008
  • Status: Active Grant
First Claim
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1. A golf ball, comprising:

  • i) a core comprising a thermoplastic composition, the core having an outer surface hardness (Hcore surface) and a center hardness (Hcore center), the Hcore surface being the same or less than the Hcore center to provide a zero or negative hardness gradient, the thermoplastic composition comprising;

    a) an acid copolymer of ethylene and an α



    -unsaturated carboxylic acid, optionally including a softening monomer selected from the group consisting of alkyl acrylates and methacrylates;

    b) a plasticizer, wherein the plasticizer is an alkyl oleate selected from the group consisting of methyl oleate, ethyl oleate, propyl oleate, butyl oleate, and octyl oleate, and mixtures thereof, the plasticizer being present in an amount of about 3 to about 50% by weight; and

    c) a cation source present in an amount sufficient to neutralize from about 0 to about 100% of all add groups present in the composition; and

    ii) a cover disposed about the core, wherein the ball has a compression of less than 60.

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