Impact resistant non-ionic fluoropolymer blends for golf ball inner layers

A golf ball comprising:

• a core comprising a center and an outer core layer, at least one of the center or core layer comprising glass microspheres having a true density of about 0.7 g/cm3 or less and a thermal conductivity of about 0.125 W·m−1·K−1 or greater when measured at 70° F., such that the core has a density of about 1.05 g/cm3 or less;
• an inner cover layer and an outer cover layer comprising a castable or non-castable thermoplastic or thermosetting material comprising partially- or fully-neutralized ionomer resins;
• epoxy;
• polyurethanes comprising polyols and polyisocyanates;
• balata;
• vinyl resins;
• polyolefins;
• polyureas;
• polyamides;
• acrylic resins and blends thereof;
• block copolymers;
• copoly(ether-amide);
• polyphenylene oxide resins and blends thereof;
• thermoplastic polyesters;
• blends and alloys including polycarbonate with acrylonitrile butadiene styrene and polyvinyl chloride with acrylonitrile butadiene styrene;
• or blends of thermoplastic rubbers with polyethylene and propylene;
• and
• an intermediate layer disposed between the core and the inner cover layer, the intermediate layer comprising a composition formed from a compatibilized blend of a non-ionic fluoropolymer and an acrylate-based polymer.