MODIFIED VINYL ALCOHOL-BASED POLYMER

• Main Authors: KONISHI HIROYUKI, SHIMIZU YOSHITAKA, KOBAYASHI SAWAKO, WATAJIMA AKIHISA
• Format: Patent
• Language: English; Japanese
• Published: 21.06.2023
• Subjects: ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; ADHESIVES; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS,e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES,DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; CONVEYING; CORRECTING FLUIDS; DYES; FILLING PASTES; GENERAL PROCESSES OF COMPOUNDING; HANDLING THIN OR FILAMENTARY MATERIAL; INKS; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; ORGANIC MACROMOLECULAR COMPOUNDS; PACKAGES; PACKAGING ELEMENTS; PACKING; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; PERFORMING OPERATIONS; POLISHES; STORING; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; USE OF MATERIALS THEREFOR; WOODSTAINS; WORKING-UP

To provide a modified vinyl alcohol-based polymer which is excellent in a barrier property, water solubility, and melt moldability and moreover is excellent in productivity when used as a coating agent.SOLUTION: Provided is a modified vinyl alcohol-based polymer represented by a formula (I), where content ratios (mole%) of each monomer unit a, b, and c satisfy formulas (1) to (3): 10≤a≤20 (1); 1≤c≤15 (2); and[100-(a+c)]×0.9≤b≤[100-(a+c)] (3). [In the formula [I], X, Y, and Z each independently represent a hydrogen atom and an alkanoyl group.]SELECTED DRAWING: None 【課題】バリア性、水溶性及び溶融成形性に優れ、しかもコーティング剤として用いた際の生産性にも優れた変性ビニルアルコール系重合体の提供。【解決手段】式（Ｉ）で表され、各単量体単位ａ、ｂ、ｃの含有率（モル％）が式（１）～（３）を満足する、変性ビニルアルコール系重合体。１０≦ａ≦２０（１）１≦ｃ≦１５（２）［１００－（ａ＋ｃ）］×０．９≦ｂ≦［１００－（ａ＋ｃ）］（３）TIFF2023085574000009.tif58166［Ｘ、Ｙ及びＺは、水素原子、アルカノイル基を表す。］【選択図】なし