Solid dispersion, preparation method therefor, chain-extended polyurethane using same, and epoxy resin composition comprising same

A solid dispersion comprising a dispersoid and a dispersion medium in which the dispersoid is dispersed,

• wherein the dispersoid is an organic particle, an inorganic particle or a mixture thereof,
• the dispersion medium is a non-aqueous dispersion medium in a solid state at room temperature,
• the solid dispersion does not comprise any dispersant or surfactant,
• the inorganic particle is selected from the group consisting of iron, aluminum, chromium, nickel, cobalt, zinc, tungsten, indium, tin, palladium, zirconium, titanium, copper, silver, gold, platinum, kaolin, clay, talc, mica, bentonite, dolomite, calcium silicate, magnesium silicate, asbestos, calcium carbonate, magnesium carbonate, barium carbonate, calcium sulfate, barium sulfate, aluminum sulfate, aluminum hydroxide, iron hydroxide, aluminum silicate, zirconium oxide, magnesium oxide, aluminum oxide, titanium oxide, iron oxide, zinc oxide, antimony trioxide, indium oxide, indium tin oxide, silicon carbide, silicon nitride, boron nitride, barium titanate, diatomite, carbon black, graphite, rock wool, glass wool, glass fiber, graphene, carbon fiber, carbon nanofibers, carbon nanotubes, an alloy of two or more metals of them or a mixture of two or more of them,
• the organic particle is selected from the group consisting of azo-based compounds, diazo-based compounds, condensed azo-based compounds, thioindigo-based compounds, indanthrone-based compounds, quinacridone-based compounds, anthraquinone-based compounds, benzimidazolone-based compounds, perylene-based compounds, phthalocyanine-based compounds, anthrapyridine-based compounds, dioxazine-based compounds, polyethylene resin, polypropylene resin, polyester resin, nylon resin, polyamide resin, aramid resin, acrylic resin, vinylon resin, urethane resin, melamine resin, polystyrene resin, polylactic acid, acetate fiber, cellulose, lignin, chitin, chitosan, starch, polyacetal, polycarbonate, polyphenylene ether, polyether ether ketone, polyether ketone, polybutylene terephthalate, polyethylene naphthalate, polybutylene naphthalate, polysulfone, polyphenylene sulfide, polyimide or mixtures thereof, and
• wherein the dispersion medium is one or more selected from the group consisting of tetritan, pentitan, heptitan, sorbitan, mannitan, iditan, galactan, isosorbide, isomannide, isoidide, tetritol, pentitol, heptitol, sorbitol, mannitol, iditol, galactitol, modified polypropylene glycol, polytetramethylene ether glycol, butylene adipate diol, 1,6-hexanadipate diol, 1,4-butanediol, 1,6-hexanediol, 1,9-nonanediol, poly(ethylene glycol)diamine, (R)-(+)-1,1′-binaphthyl-2,2′-diamine, (S)-(−)-1,1′-binaphthyl-2,2′-diamine, 1,1′-binaphthyl-2,2′-diamine, 4-ethoxybenzene-1,2-diamine, (1R,2R)—N,N′-dimethyl-1,2-diphenylethane-1,2-diamine, N,N-bis(4-butylphenyl)benzene-1,4-diamine, 2,3-xylenol, 2,4-xylenol, 2,5-xylenol, 2,6-zylenol, 3,4-zylenol, 3,5-zylenol, 2,5-dimethylphenol, 2,3-dimethylphenol, imidazole, 1-(2-hydroxyethyl)imidazole, imidazole trifluoro methanesulfonate, imidazole-2-carboxylic acid, 4-bromo-1H-imidazole, N-benzyl-2-nitro-1H-imidazole-1-acetamide, 2-chloro-1H-imidazole, imidazole-d, imidazole-N, imidazole-2-C,N, (2-dodecen-1-yl) succinic anhydride, maleic anhydride, succinic anhydride, phthalic anhydride, glutaric anhydride, 3,4,5,6-tetrahydrophthalic anhydride, diglycolic anhydride, itaconic anhydride, trans-1,2-cyclohexanedicarboxylic anhydride, 2,3-dimethylmaleic anhydride, 3,3-tetramethylene glutaric anhydride, stearic anhydride, cis-aconitic anhydride, trimellitic anhydride chloride, phenylsuccinic anhydride, 3,3-dimethylglutaric anhydride, methylsuccinic anhydride or combinations thereof.