METHOD FOR PRODUCING POLYVINYLETHER

• Main Authors: KANAOKA SHOKYOKU, NAKAYAMA SHINGO, KAMIHIGASHI SHUN, IDA SHOHEI, KANEDA JUN
• Format: Patent
• Language: English; Japanese
• Published: 15.05.2024
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP

To provide a production method that yields polyvinylether with low environmental load and reduced coloration.SOLUTION: A method for producing polyvinylether includes polymerizing a C3-10 alkyl vinyl ether compound in the presence of water and Lewis acid catalyst. The Lewis acid catalyst comprises at least one selected from the group consisting of iron chloride and hydrate of iron chloride. The molar ratio between the Lewis acid catalyst and the alkyl vinyl ether compound (Lewis acid catalyst/alkyl vinyl ether compound) is 8.0×10-6-1.3×10-3.SELECTED DRAWING: None 【課題】環境負荷が低く、着色が抑制されたポリビニルエーテルを得ることのできる製造方法を提供する。【解決手段】炭素数３～１０のアルキルビニルエーテル化合物を、水及びルイス酸触媒の存在下で重合するポリビニルエーテルの製造方法であって、前記ルイス酸触媒が、塩化鉄及び塩化鉄の水和物からなる群より選択される１種以上を含み、前記ルイス酸触媒と前記アルキルビニルエーテル化合物とのモル比（ルイス酸触媒／アルキルビニルエーテル化合物）が８．０×１０-6～１．３×１０-3である、ポリビニルエーテルの製造方法。【選択図】なし