| http://www.w3.org/ns/prov#value | - condary amino groups, the resin component having a flexural rigidity of 340 to 410 MPa, (2) said intermediate layer is formed of a resin component mainly comprising an ionomer resin or non-ionomer thermoplastic elastomer and having a flexural rigidity of 20 to 350 MPa, and (3) the golf ball has a hardness corresponding to a distortion of 2.6 to 4.5 mm under a constant load of 100 kg. 2.
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