AZIDO GROUP-CONTAINING FLUOROPOLYMER, AND METHOD OF PRODUCING THE SAME

• Main Authors: FUKUDA KENICHI, HAYASHI TATSUTO
• Format: Patent
• Language: English; Japanese
• Published: 24.06.2019
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP

To provide an azido group-containing fluoropolymer, having a perfluoropolyether having a specific molecular structure as a main chain structure, and having azido groups at both ends of a molecular chain through methylene groups, and a method of producing the same.SOLUTION: An azido group-containing fluoropolymer is represented by formula (1). The method of producing an azido group-containing fluoropolymer represented by formula (1) includes: reacting hydroxyl groups of a fluoropolymer obtained by blocking both ends of a molecular chain represented by formula (6) with methylol groups with sulfonyl halide compounds to substitute molecular both ends by sulfonyl ester groups; and successively reacting with sodium azide in a mixed solvent of a non-fluorine organic solvent and an at least partially fluorinated organic solvent. Rfis a perfluoropolyether group composed of a repeating unit of hexafluoropropylene oxide, tetrafluoroethylene oxide, or difluoromethylene oxide.SELECTED DRAWING: None 【課題】特定の分子構造を有するパーフルオロポリエーテルを主鎖構造として有し、分子鎖両末端にメチレン基を介してアジド基を有するアジド基含有フルオロポリマー及びその製造方法の提供。【解決手段】式（１）で表されるアジド基含有フルオロポリマー。式（６）で表される分子鎖両末端がメチロール基で封鎖されたフルオロポリマーのヒドロキシ基をハロゲン化スルホニル化合物と反応させて、分子鎖両末端をスルホニルエステル基とし、次いで非フッ素系有機溶媒と少なくとも部分的にフッ素化された有機溶媒との混合溶媒中で、アジ化ナトリウムと反応させて、式（１）で表される、アジド基含有フルオロポリマーを製造する方法。［Ｒｆ1は、ヘキサフルオロプロピレンオキシド、テトラフルオロエチレンオキシド又はジフルオロメチレンレンオキシドの繰り返し単位からなるパーフルオロポリエーテル基］【選択図】なし