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프탈이미드계 고수세성 아조 분산염료의 합성과 셀룰로스 아세테이트 섬유에 대한 염색성 연구
Synthesis of High-washable Phthalimide-based Azo Disperse Dyes and the Application of These Dyes on Cellulose Diacetate Fibers
이은교 ( Eunkyo Lee ) , 김경학 ( Kyunghak Kim ) , 윤상현 ( Sanghyun Yoon ) , 오나현 ( Nahyun Oh ) , 김상천 ( Sangcheon Kim ) , 고준석 ( Joonseok Koh )
UCI I410-ECN-0102-2021-500-001118246
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In disperse dyeing of polyester fibers, reduction clearing is conducted to improve the wet fastness of the dyed material. However, in the case of disperse dyeing of cellulose diacetate fabrics, when reduction clearing is conducted, the acetyl groups in cellulose acetate fibers may be alkali-hydrolyzed, which leads to a deterioration of their characteristic properties. Therefore, the dyed acetate fabrics are usually after-treated with a soaping agent at a relatively low temperature for better wet fastness, although it fails to meet the customer demands. In this study, high-washable phthalimide-based azo disperse dyes were synthesized, and their dyeing and fastness properties on cellulose diacetate fabrics were investigated. In particular, conventional 4-aminoazobenzene dyes containing a nitro group at the 4-position were synthesized to compare their fastness properties on cellulose acetate with those of phthalimide-based azo disperse dyes.

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