Patent ID: 7388053

Claim:
A golf ball comprising a core, a thin layer having a thickness of about 0.025 mm to about 0.76 mm encasing the core, and a cover encasing the thin layer, wherein the thin layer comprises a diene polymer cross-linked with at least about 50 phr of a reactive co-agent and the thin layer has a specific gravity of greater than 1.8; wherein an elastomeric composition is disposed in the core wherein the composition comprises one or more materials selected from a group consisting thermoset polymers, thermoplastic polymers, highly neutralized polymers, metallocene or single-site catalyst catalyzed polymers, polybutadienes, ethylene-propylene-diene polymers, poly(styrene-butadiene-styrene), SEBS, SEPS block polymers, styrene-ethylene block copolymers, diene polymers, and any polar group grafted or copolymerized polymers; wherein the elastomeric composition further comprises greater than about 50 phr of a second different reactive co-agent.