Interpenetrating polymer networks using blocked polyurethane/polyurea prepolymers for golf ball layers
AssigneeAcushnet Company
InventorsManjari Kuntimaddi, Shenshen Wu, Murali Rajagopalan
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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.
Claims15
A method of forming a portion of a golf ball comprising the steps of:
- providing a first polymeric precursor formed from the reaction product of a half-blocked intermediate and an amine-terminated component, wherein the half-blocked intermediate is the reaction product of an isocyanate having terminal isocyanate groups and a first curing agent comprising a blocked, delayed action curative;
- providing a second polymeric precursor comprising an acrylate resin;
- adding a second curing agent to the second polymeric precursor to form a second polymeric system;
- 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 first curing agent 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.
A method of forming a portion of a golf ball comprising the steps of:
- providing a first polymeric precursor comprising the reaction product of a half-blocked intermediate and an amine-terminated component, wherein the half-blocked intermediate is the reaction product of an isocyanate and a first curing agent comprising a blocked, delayed action curative comprising a salt complex;
- providing a second polymeric precursor comprising an acrylate resin;
- adding a second curing agent to the second polymeric precursor to form a second polymeric system;
- combining the first polymeric precursor and second polymeric system in a vessel;
- elevating the temperature in the vessel to about 175° F. to about 350° F. 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.
A method of forming a portion of a golf ball comprising the steps of:
- providing a half-blocked intermediate that is the reaction product of an isocyanate and a curative comprising a salt complex having a deblocking temperature ranging from 212° F. to 302° F.;
- reacting the half-blocked intermediate with an amine-terminated component to form a first polymeric precursor;
- providing a second polymeric precursor comprising an acrylate resin;
- adding a second curing agent to the second polymeric precursor to form a second polymeric system;
- combining the first polymeric precursor and second polymeric system in a vessel;
- elevating the temperature in the vessel to the deblocking temperature 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.
Dependencies are inferred from the claim text.