SOFT IONOMER COMPOSITIONS AND BLENDS THEREOF FOR GOLF BALL COVERS

摘要

Novel, soft, low modulus enthylene copolymer ionomer compositions containing an acrylate softening monomer, neutralized with magnesium or lithium ions possess a higher level of resilience at a given level of PGA Compressibility than known ionomers. The advantage is maintained in certain blend compositions with hard ionomers of lithium and magnesium for blends having a neat-sphere PGA Compression below about 155, for blends with hard sodium ionomer for blends with a neat-sphere PGA Compression below about 155 provided there is at least 50 % soft ionomer, and for stiffer blend compositions having 51 - 80 % hard ionomer, where the hard ionomer is sodium, potassium or zinc. The soft ionomers and blends are useful for golf ball cover material.