When X is a hydroxyl group and R3 is an aliphatic hydrocarbon group of 11 or more carbon atoms, preferably 12 or more carbon atoms, more preferably 13 or more carbon atoms, in the formula (3), effects of improvement in coating properties and printability can be further enhanced. [1418] Filler Dispersant [1419] The polar group-containing olefin copolymer and the thermoplastic resin composition of t