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Multi-layer golf ball

  • US 7,306,529 B2
  • Filed: 10/07/2005
  • Issued: 12/11/2007
  • Est. Priority Date: 10/07/2005
  • Status: Active Grant
First Claim
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1. A golf ball, comprising:

  • a molded core comprising a high cis-polybutadiene having a Mooney viscosity of from about 20 to about 70 and an Instron compression of greater than 0.0880;

    an inner mantle comprising an ionomer neutralized to 80% or more and having a Shore D hardness of from about 30 to about 85, the inner mantle molded on the molded core;

    an outer mantle comprising an ionomer having a Shore D hardness of from about 30 to about 85, the outer mantle molded on the inner mantle, the outer mantle having a thickness ranging from 0.025 inch to 0.065 inch;

    and a thermoset polyurethane/polyurea cover formed over the outer mantle, the thermoset polyurethane/polyurea cover having a thickness ranging from 0.015 inch to 0.040 inch.

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