反应详情

The procedure of Production Example 1 was followed in the same manner except that styrene, vinylnaphthalene and the polymerization-initiator were used in amounts of 60 parts, 27 parts and 13 parts, respectively, whereby 95 parts of a styrene-vinylnaphthalene copolymer (a-2) was obtained. The Mn of (a-2) was 1,740, the volume resistivity thereof was 5×1014 Ω·cm, and the refractive index thereof was 1.708.