EXTRACTANT AND EXTRACTION METHOD FOR REMOVING COLOR-EXPRESSING FOREIGN SUBSTANCES FROM COLORED POLYMER CONTAINING ESTER FUNCTIONAL GROUP, AND METHOD FOR CHEMICALLY SELECTING POLYMER CONTAINING ESTER FUNCTIONAL GROUP FROM COLORED POLYMER MIXTURE

• Main Authors: JO, Ye Rim, LE, Thi Hong Ngan, CHO, Joungmo
• Format: Patent
• Language: English; French; Korean
• Published: 10.11.2022
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; GENERAL PROCESSES OF COMPOUNDING; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; WORKING-UP

The present invention relates to an extractant and an extraction method for removing color-expressing foreign substances from a colored polymer containing an ester functional group and a method for chemically selecting a polymer containing an ester functional group from a colored polymer mixture and, more specifically, to an extractant capable of effectively removing foreign substances, such as a dye and a pigment, from a colored polymer exhibiting a color by the foreign substances and containing an ester functional group, to a method for eluting most of color-expressing foreign substances by contact with a colored polymer containing an ester functional group while the extractant is maintained at a specific temperature range, and to a method of adding the extractant to a colored polymer mixture to selectively elute foreign substances from only a colored polymer containing an ester functional group and then effectively selecting, through color differentiation, a polymer having the foreign substances removed therefrom and containing an ester functional group. La présente invention se rapporte à un agent d'extraction et un procédé d'extraction pour l'élimination de substances étrangères conférant de la couleur d'un polymère coloré contenant un groupe fonctionnel ester et un procédé pour la sélection chimique d'un polymère contenant un groupe fonctionnel ester à partir d'un mélange à base de polymère coloré et, plus spécifiquement, à un agent d'extraction permettant d'éliminer efficacement des substances étrangères, telles qu'un colorant et un pigment, d'un polymère coloré présentant une couleur conférée par les substances étrangères et contenant un groupe fonctionnel ester, à un procédé pour l'élution de la majeure partie des substances étrangères conférant de la couleur par contact de l'agent d'extraction avec un polymère contenant un groupe fonctionnel ester coloré tandis que l'agent d'extraction est maintenu sur une plage de température spécifique, et à un procédé consistant à ajouter l'agent d'extraction à un mélange à base de polymère coloré pour éluer sélectivement des substances étrangères uniquement à partir d'un polymère coloré contenant un groupe fonctionnel ester, puis sélectionner efficacement, par différenciation de couleur, un polymère contenant un groupe fonctionnel ester dont les substances étrangères ont été éliminées. 에스테르 작용기를 포함하는 유색 고분자로부터 색을 발현하는 이물질을 제거하기 위한 추출제 및 추출 방법과 유색 고분자 혼합물로부터 에스테르 작용기를 포함하는 고분자를 화학적으로 선별하는 방법에 관한 것으로, 더욱 상세하게는, 염료 및 안료와 같은 이물질에 의해 색상을 띠는 에스테르 작용기를 포함하는 유색 고분자로부터 이물질을 효과적으로 제거할 수 있는 추출제, 상기 추출제를 특정 온도 범위로 유지하면서 에스테르 작용기를 포함하는 유색 고분자와 접촉하여 색을 발현하는 이물질 대부분이 용출되도록 하는 방법, 상기 추출제를 유색 고분자 혼합물에 가하여 에스테르 작용기를 포함하는 유색 고분자에서만 선택적으로 이물질이 용출되도록 한 후, 색조 감별을 통해 이물질이 제거된 에스테르 작용기를 포함하는 고분자를 효과적으로 선별하는 방법에 관한 것이다.