Gas barrier coating film

• Main Authors: SEKHARAN MANESH NADUPPARAMBIL, WONG, STEPHEN, M, HE YAFEI, CHEN HONGYU, SHAH ANISH B, YAN QIANGQIANG, SHARMA RAHUL, EINSLA MELINDA L, SONG XIAOMEI, EINSLA, BRIAN, R, DEMRULET, RAY, E, QIN SHIWEI, ZHANG XIAOXIA, RAO YUANQIAO
• Format: Patent
• Language: Chinese; English
• Published: 09.07.2024
• Subjects: 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; CORRECTING FLUIDS; DYES; FILLING PASTES; GENERAL PROCESSES OF COMPOUNDING; INKS; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; PERFORMING OPERATIONS; POLISHES; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; USE OF MATERIALS THEREFOR; WOODSTAINS; WORKING-UP

A barrier coating comprising polyvinyl alcohol, polyacrylic acid, and carbodiimide is disclosed, wherein the barrier film is formed at less than 120 DEG C. Also disclosed are laminates comprising a barrier coating comprising polyvinyl alcohol, polyacrylic acid, and carbodiimide. The polyacrylic acid may include poly (meth) acrylic acid having a molecular weight of from 2000 g/mol to 400,000 g/mol and a neutralization degree of from 2% to 50%. The polyvinyl alcohol may have a degree of saponification of at least 80% and a molecular weight of from 10,000 g/mol to 300,000 g/mol. The disclosed barrier coatings provide good OTR at high humidity without the need for high cure temperatures or non-commercially viable cure times. 公开了包含聚乙烯醇、聚丙烯酸和碳二亚胺的阻隔涂层，其中阻隔膜在低于120℃下形成。还公开了含阻隔涂层的层合体，该阻隔涂层包含聚乙烯醇、聚丙烯酸和碳二亚胺。聚丙烯酸可包含分子量为2000g/mol至400,000g/mol且中和度为2％至50％的聚(甲基)丙烯酸。聚乙烯醇可具有至少80％的皂化度和10,000g/mol至300,000g/mol的分子量。所公开的阻隔涂层在高湿度下提供良好的OTR，而不需要高固化温度或非商业可行的固化时间。