TECHNOLOGY FOCUS - POLYMERS - Preferred Components: The acid-modified polyolefin is obtained by modifying one terminal of polyolefin with ( alpha ),( beta )-unsaturated carboxylic acid or its anhydride. The acid-modified polyolefin is polybutenyl succinic acid or its anhydride. The block copolymer consists of block (AA) derived from acid-modified polyolefin, and block (BB) derived from alkylene oxide adduct of amide alcohol, in the form of AA-BB-AA type and/or AA-BB. The block copolymer is of formula (I), or (II) and/or (III).R1=2-22C linear or branched acyl;R2=1-4C linear or branched alkylene;A1=2-4C alkylene;n=1-100;R3,R4=polyolefin residue;M1,M2=H, alkali metal, alkaline-earth metal, ammonium, or organic ammonium;andR11=1-21C linear or branched alkyl or alkenyl.The antistatic agent further contains block copolymer of formula (IV) and/or block copolymer of formula (V).R5,R8=residue obtained by removing hydroxyl group from diol compound;B'=H or structure of formula (i);A2-A5=2-4C alkylene;p,q,k,l=0-100;R6,R7,R9,R10=polyolefin residue;andM3-M6=H, alkali metal, alkaline-earth metal, ammonium, or organic ammonium.The thermoplastic resin is polyolefin resin. EXAMPLE - (In g) poly(iso)butenyl succinic acid anhydride (3741) having a saponification value of 90 mg potassium hydroxide/g, amide alcohol alkylene oxide adduct (1050) having hydroxyl value of 80.1 mg potassium hydroxide/g, and Irganox 1010 (RTM: antioxidant) (15) were heated to 80 degrees C after nitrogen substitution, and 48% potassium hydroxide (351) was added. The mixture was heated to 220 degrees C and maintained for 3 hours. The product obtained was a viscous polymer having a hydroxyl value of 17.1 mg potassium hydroxide/g. A molded product prepared using a mixture of the obtained polymer and Novatech PP FL6H (RTM: polypropylene) had a surface specific resistance of 10.7 log Omega /square after leaving in an environment of 23 degrees C and 50% relative humidity and 11.4 log Omega /square after immersing in hot water at 80 degrees C for 30 minutes, as measured by JIS-K6911, excellent external appearance, and a haze of 4%.