Material for room temperature curable solvent-borne overcoating material,coating material using same and coating film

A room temperature curable solvent-borne coating material, comprising:

• a lipophilic polyrotaxane and a resinous component, the polyrotaxane including a cyclic molecule, a linear molecule piercing through the cyclic molecule, and blocking groups disposed at both end terminals of the linear molecule to prevent departure of the cyclic molecule,
• wherein at least one of the linear molecule and the cyclic molecule has a hydrophobic modification group which is at least one selected from the group consisting of alkyl group, benzyl group, benzene derivative-containing group, acyl group, silyl group, trityl group, tosly group, and groups bonded through a urethane bond, ester bond or ether bond, thereby exhibiting hydrophobicity;
• wherein the resinous component is at least one selected from the group consisting of polyvinyl alcohol, polyvinyl pyrrolidone, poly(meth) acrylic acid, cellulose-based resin, polyacryl amide, polyethylene oxide, polyethylene oxide, polyethylene glycol, polypropylene glycol, polyvinyl acetal-based resin, polyvinylmethyl ether, polyamine, polyethylene imine, casein, gelatin, starch, polyolefin-based resin, a copolymer resin of these with other olefin-based monomers, polyester resin, polyvinyl chloride resin, polystyrene-based resin, acrylic resin, polycarbonate resin, polyurethane resin, vinyl chloride-vinyl acetate copolymer resin, polyvinyl butyral resin, polyisobutylene, polytetrahydrofuran, polyaniline, acrylonitrile-butadiene-styrene copolymer (ABS resin), polyamides, polyimides, polydienes, polysiloxanes, polysulfones, polyiminies, polyacetic anhydrides, polyureas, polysulfides, polyphosphazenes, polyketones, polyphenylenes, polyhaloolefins, and derivatives thereof having at least one additional hydroxyl group, amino group, carboxyl group, epoxy group, vinyl group, thiol group, or photocross-linking group.