TECHNOLOGY FOCUS - POLYMERS - Preferred Components: The hydroxylated acrylic dispersion body is formed by neutralizing, shearing and dispersing polymer obtained by performing radical polymerization reaction on at least two non-functional (methyl) acrylate monomers, at least one hydroxy (methyl) acrylate monomer, and at least one (methyl) acrylic monomer at high speed to water; the non-functional (methyl) acrylate monomer at least comprises (methyl) methyl acrylate, (methyl) ethyl acrylate, (methyl) butyl acrylate, tertbutyl methacrylate, and (methyl) isobornyl acrylate, at 50-80 wt.% of total mass of reaction monomer; the hydroxy (methyl) acrylate monomer at least includes hydroxyethyl methacrylate, hydroxypropyl methacrylate, and hydroxy-propyl acrylate, at 19-40 wt.% of the total mass of the reaction monomer; and the (methyl) acrylic monomer at least includes methacrylic acid and acrylic acid, at 1-5 wt.% of the total mass of the reaction monomer. The hydroxy content of hydroxylated acrylic dispersion body is 2.7-5.6 (preferably 3-4) wt.%; the acid value is 8-40 (preferably 10-20) mg potassium hydroxide (KOH)/g; and the volatile organic compound content is less than 9 wt.%. The hydroxy polyurethane dispersion body is aqueous aliphatic hydroxy polyurethane dispersion body, formed by neutralizing and shearing and dispersing pre-polymer obtained by performing polymerization reaction on aliphatic diisocyanate, polyol, and dihydric alcohol-containing hydrophilic group to water at high speed; aliphatic diisocyanate comprising hexamethylene diisocyanate, hexamethylene-1,6-diisocyanate, isophorone diisocyanate, and m-xylylene diisocyanate; the polyol is polyether polyol or polyester polyol (preferably), with molecular weight of 400-5000 (preferably 1000-3000) Daltons; and dihydric alcohol-containing hydrophilic group comprising dimethylolpropionic acid (DMPA) and/or dimethylolbutanoic acid (DMBA). The hydroxy content of the hydroxy polyurethane dispersion body is 1-3 (preferably 1.5-3) wt.%. The water dispersible aliphatic isocyanate includes polyethylene glycol or isophorone diisocyanate tripolymer, hexamethylene-1,6-diisocyanate tripolymer and/or hexamethylene-1,6-diisocyanate biuret modified by sulfo group, preferably polyethylene glycol or hexamethylene-1,6-diisocyanate tripolymer modified by sulfo group; and cyanate content of 2-25 wt.%. The dope comprises component A comprising (wt.%) film forming resin (38-55), wetting agent (0.2-0.5), dispersant (0.3-2), flatting agent (0.3-1), defoamer (0-0.3), ultraviolet absorber (0.1-0.5), pigment/filler (20-30), thickener (0-2), and water (2-10), and component B including water dispersible aliphatic isocyanate (13-20) diluted to 70-90% using propylene glycol methyl ether acetate or water.