TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Composition: The resin composition further contains (in wt.pts) radical initiator (C) (0.001-1), a multifunctional compound (D) (0-1) having two or more radical polymerizable functional groups in molecule, and an antistatic agent (E) (0.5-10).    TECHNOLOGY FOCUS - POLYMERS - Preferred Polymers: The cyclic olefin-type polymer (A) has structural unit of formulae (1,2), and is ring-opened polymer of cyclic olefin or its hydrogenated substance, preferably copolymer containing tetracyclo(4.4.0.12,5.17,10)-3-dodecene and ethylene.x,y=copolymerization ratio, and y/x=0/100-95/5;n=0-2;R1=2-20C hydrocarbon group having valency of 2+n;R2=1-10C monovalent hydrocarbon group consisting of hydrogen or carbon, or H;R3=2-10C tetravalent hydrocarbon;Q=COOR4;R4=H or 1-10C monovalent hydrocarbon group consisting of hydrogen or carbon;R5=2-20C bivalent hydrocarbon group;R6=H or 1-5C monovalent hydrocarbon group;andb/a=5/95-95/5.The copolymer (B) is copolymer of styrene and conjugated diene-type monomer or its hydrogenated substance. The content of structural unit derived from styrene in polymer (B) is 40-80 wt.%. Preferred Properties: The cyclic olefin-type polymer has glass transition temperature of 60-200 degrees C. The modulus of difference of refractive indices of polymers (A,B) is 0.015 or less. EXAMPLE - Ethylene tetracyclo dodecene copolymer (in wt.pts) (80) having glass transition temperature of 145 degrees C and melt flow rate of 10 g/10 minutes, Perhexyne 25B (RTM: radical initiator) (0.04) divinylbenzene (0.04) and Septon2104 (RTM: polymer having melt flow rate of 0.76 g/10 minutes) (20) were uniformly mixed and extruded to obtained pellets (A). The obtained pellets (40) and tetracyclo(4.4.0.12,5.17,10)-3-dodecene (60) were mixed and extruded to obtain pellets (B). Armostat 310 (RTM: antistatic agent) (5) was added to pellets and extruded. The resulting pellets as molded article had melt flow rate of 12.5 g/10 minutes, Izod impact strength of 35 J/m, haze of 12.5%, and abrasion loss of 85 mg.