×

Interpenetrating polymer networks using blocked polyurethane/polyurea prepolymers for golf ball layers

  • US 7,339,010 B2
  • Filed: 07/28/2004
  • Issued: 03/04/2008
  • Est. Priority Date: 04/13/2001
  • Status: Expired due to Fees
First Claim
Patent Images

1. A method of forming a portion of a golf ball comprising the steps of:

  • providing a first polymeric precursor comprising a polyurethane or polyurea prepolymer having blocked isocyanate groups and a first curing agent;

    providing a second polymeric precursor comprising an epoxy resin;

    adding a second curing agent to the second polymeric precursor to form a second polymeric system wherein the second curing agent is substantially unreactive with the first polymeric precursor;

    combining the first polymeric precursor and second polymeric system in a vessel;

    elevating the temperature in the vessel to an amount sufficient to unblock the isocyanate groups in the first polymeric component to provide a first polymeric system resulting in an interpenetrating polymer network (“

    IPN”

    ) comprising the first and second polymeric systems; and

    forming the IPN into the portion of the golf ball, wherein the step of adding occurs prior to the steps of combining and elevating.

View all claims
  • 5 Assignments
Timeline View
Assignment View
    ×
    ×