Abstract: An electrophoretic coating composition comprising as an essential component a film-forming ingredient containing (1) an adduct of an .alpha.,.beta.-unsaturated dicarboxylic acid or anhydride thereof to a mixture of a liquid conjugated diene polymer and a polyunsaturated rubber or an 1,2-polybutadiene resin, (2) a mixture of said adduct (1) and an adduct of an .alpha.,.beta.-unsaturated dicarboxylic acid or anhydride thereof to a natural drying oil or thermally polymerized product thereof or (3) an adduct of the same acid or anhydride to a mixture of the liquid conjugated diene polymer, 1,2-polybutadiene or polyunsaturated rubber and natural drying oil or thermally polymerized product thereof. In one embodiment, the adducts (1), (2) and (3) may be substituted with modified ones prepared by reaction of the former with an alcohol, respectively.

Abstract: A method for recovering a low molecular weight polymer containing no catalyst residue, which method comprises the steps of: polymerizing a conjugated diolefin or copolymerizing comonomers of conjugated diolefins and a vinyl compound having anionic polymerization activity in the presence of a catalyst containing an organic sodium compound and a chain transfer agent of an alkyl aryl compound; uniformly mixing the obtained polymerization mixture with an isopropyl alcohol aqueous solution; separating the thus obtained mixture into two phases of a polymer mixture containing the liquid low molecular weight polymer and an isopropyl alcohol aqueous solution containing catalyst residue; and separating the low molecular weight polymer from the polymer mixture.