| abstract |
(57) [Summary] [Structure] (A) A copolymerized polyester having (a) an aromatic dicarboxylic acid unit, (b) a polyoxyalkylene unit and (c) a side chain type polyoxyalkylene group in a specific ratio. (B) At least one of the above-mentioned copolyesters is obtained by alkali-treating a mixed fiber having a composite fiber with at least one other fiber-forming polymer as a core yarn and a cellulosic fiber as a sheath yarn A method for producing a fabric or the like having a good texture by dissolving and removing a part. [Effect] According to the method of the present invention, it has excellent coloring properties, hygroscopicity, drapeability, dry feeling, etc., which are the characteristics of the cellulosic fiber main body, and also has dimensional stability, wrinkle resistance, It is possible to efficiently produce a yarn and a cloth excellent in great tenacity when wet, soft feeling and swelling under a mild alkaline treatment condition in a short time. |