초록 ▼

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 blo

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.

대표청구항 ▼

What is claimed is: 1. A golf ball comprising at least one layer formed from an interpenetrating polymer network comprising: a first polymeric system comprising a polyurea prepolymer cured with a first curing agent, wherein the prepolymer comprises an isocyanate having terminal isocyanate groups, a

What is claimed is: 1. A golf ball comprising at least one layer formed from an interpenetrating polymer network comprising: a first polymeric system comprising a polyurea prepolymer cured with a first curing agent, wherein the prepolymer comprises an isocyanate having terminal isocyanate groups, a blocking agent, and a polyamine; and a second polymeric system comprising an epoxy resin and a second curing agent. 2. The golf ball of claim 1, wherein the blocking agent is selected from the group consisting of linear and branched alcohols; phenols and phenol derivatives; oximes; lactams; lactones; β-dicarbonyl compounds; hydroxamic acid esters; bisulfite addition compounds; hydroxylamines; esters of p-hydroxybenzoic acid; N-hydroxyphthalimide; N-hydroxysuccinimide; triazoles; substituted imidazolines; tetrahydropyrimidines; caprolactones; and mixtures thereof. 3. The golf ball of claim 2, wherein the blocking agent is selected from the group consisting of phenols, branched alcohols, methyl ethyl ketoxime, ε-caprolactam, ε-caprolactone, and mixtures thereof. 4. The golf ball of claim 1, wherein the second curing agent is selected from the group consisting of anhydrides, Lewis bases, amines, amides, Lewis acids, and mixtures thereof. 5. The golf ball of claim 1, wherein at least about 80 percent of the terminal isocyanate radicals groups are blocked. 6. The golf ball of claim 5, wherein at least about 95 percent or more of the terminal isocyanate groups are blocked. 7. The golf ball of claim 1, wherein the at least one layer comprises a cover layer. 8. The golf ball of claim 7, wherein the cover layer comprises an inner cover layer and an outer cover layer. 9. The golf ball of claim 8, wherein the inner cover layer is formed from the interpenetrating polymer network. 10. The golf ball of claim 8, wherein the outer cover layer is formed from the interpenetrating polymer network. 11. A golf ball comprising a core and a cover, wherein a portion of the golf ball is formed from an interpenetrating polymer network comprising: a first polymeric system comprising an isocyanate having terminal isocyanate groups, an amine-terminated component, and a blocked, delayed action curative; and a second polymeric system comprising an epoxy resin and a curing agent. 12. The golf ball of claim 11, wherein the curing agent is selected from the group consisting of anhydrides, Lewis bases, amines, amides, Lewis acids, and mixtures thereof. 13. The golf ball of claim 11, wherein the blocked delayed action amine curative comprises methylene dianiline and sodium chloride. 14. The golf ball of claim 13, wherein the blocked delayed action amine curative has a deblocking temperature of about 175° F. to about 350° F. 15. The golf ball of claim 11, wherein at least about 95 percent or more of the terminal isocyanate groups are blocked. 16. The golf ball of claim 11, wherein at least about 97 percent or more of the terminal isocyanate groups are blocked. 17. The golf ball of claim 11, wherein the portion comprises the cover.