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Golf ball layers formed of polyurethane-based and polyurea-based compositions incorporating block copolymers

  • US 7,211,624 B2
  • Filed: 07/28/2004
  • Issued: 05/01/2007
  • Est. Priority Date: 12/03/1999
  • Status: Expired due to Term
First Claim
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1. A method for forming a golf ball composition comprising the steps of:

  • forming a prepolymer comprising an isocyanate and at least one of a hydroxy-terminated component or an amine-terminated component;

    providing a block copolymer, wherein the block copolymer comprises at least one functional group at a terminal end of the block copolymer;

    reacting excess prepolymer with the block copolymer to form an intermediate prepolymer comprising a hydrophobic block and isocyanate groups;

    chain extending the intermediate prepolymer with a curing agent to form the composition.

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