| 摘要 |
PURPOSE:To obtain the title compsn. composed of a stable emulsion which gives a coating film which does not cause blistering and has an excellent appearance, by allowing an org. high-molecular material having imide and/or amide groups which are cyclized at a specified ratio, dissolved in a solvent to drop into a liquid which is a non-solvent for said high-molecular material to thereby mix them and emulsify the high-molecular material therein. CONSTITUTION:At least one member (A) selected from the group consisting of an org. high-molecular material (a) having imide groups which are cyclized at a cylization ratio of not lower than 90% such as a compd. of formula I, an org. high-molecular material (b) having amide groups such as a compd. of formula II and an org. high- molecular material (c) having imide and amide groups which are cyclized at a cylization ratio of not lower than 90%, such as a compd. of formula III (in the formulas, R1 is a group of formula IV or V; R2 and R3 are each a group of formula VI or VII; and R4 is R1 or a group of formula VII) is dissolved in a solvent (B) such as N-methyl-2-pyrrolidone, dimethylacetamide, dimethyl sulfoxide, etc. The resulting soln. in allowed to drop into a liquid (C) which is a non-solvent for the component A, such as ketone, to thereby mix them and emulsify the component A in the liquid, thus obtaining the title compsn. composed of a stable emulsion.
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