Interpenetrating polymer networks using blocked polyurethane/polyurea prepolymers for golf ball layers
First Claim
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1. A golf ball comprising at least one layer formed from an interpenetrating polymer network comprising:
- a first polymeric system comprising the reaction product of a polyurethane prepolymer cured with a first curing agent, wherein the prepolymer comprises an isocyanate having terminal isocyanate groups, a blocking agent and a polyol; and
a second polymeric system comprising the reaction product of an epoxy resin and a second curing agent, wherein the first and second polymeric systems are not chemically bonded to each other.
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Abstract
The present invention is directed to a method of forming a golf ball that contains an interpenetrating polymer network, or IPN, which includes at least two polymeric systems, in one or more of the layers. The first polymeric system may include a polyurethane-based or polyurea-based system having blocked isocyanate groups and the second polymeric system may include an epoxy-based or acrylic-based system, wherein the two systems are polymerized or cured simultaneously or sequentially to form an IPN.
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Citations
15 Claims
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1. A golf ball comprising at least one layer formed from an interpenetrating polymer network comprising:
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a first polymeric system comprising the reaction product of a polyurethane prepolymer cured with a first curing agent, wherein the prepolymer comprises an isocyanate having terminal isocyanate groups, a blocking agent and a polyol; and a second polymeric system comprising the reaction product of an epoxy resin and a second curing agent, wherein the first and second polymeric systems are not chemically bonded to each other. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A golf ball comprising a core and a cover, wherein a portion of the golf ball is formed from an interpenetrating polymer network comprising:
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a first polymeric system comprising the reaction product of an isocyanate having terminal isocyanate groups, a polyol, and a blocked, delayed action curative; and a second polymeric system comprising the reaction product of an epoxy resin and a curing agent, wherein the IPN is substantially free of inter-crosslinks between the first and second polymeric systems. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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Specification