Kautschukzusammensetzung für sphärische Hohlkörper druckloser Tennisbälle

摘要

A rubber composition suitable for producing hollow cores of pressureless tennis balls and superior in rebound properties and feeling of striking balls by racket, which contains, as a rubber component, 30 to 100 % by weight of a polybutadiene rubber having a content of cis-1,4 bond of at least 97 % by weight and a Z-average molecular weight of 5 x 10<6> to 2 x 10<7> and 70 to 0 % by weight of other diene rubbers.