Aqueous metal surface treatment agent for lithium ion secondary battery
AssigneesThe Nippon Synthetic Chemical Industry Co., Ltd., Kyoritsu Chemical & Co., Ltd.
InventorsTakahiro Minowa, Hiroyuki Tanaka, Satoshi Yamazaki, Mitsuo Shibutani
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Abstract
This is to provide an aqueous metal surface treatment agent for a lithium ion secondary battery which can improve interlaminar adhesiveness between a metal member and a resin coating layer such as a film or a coated film, and solvent resistance without using trivalent chromium. The aqueous metal surface treatment agent for a lithium ion secondary battery comprises a polyvinyl alcohol resin containing 2 to 15 mol % of a 1,2-diol structural unit represented by the formula (1): having a degree of saponification of 90 to 99.9 mol % and an average degree of polymerization of 250 to 3000; and a metallic crosslinking agent.
Claims4
An aqueous metal surface treatment agent for a lithium ion secondary battery which comprises a polyvinyl alcohol resin containing 2 to 15 mol % of a 1,2-diol structural unit represented by the formula (1):
- wherein R1, R2 and R3 each independently represent a hydrogen atom or an organic group, X represents a single bond or a connecting chain, and R4, R5 and R6 each independently represent a hydrogen atom or an organic group, and having a degree of saponification of 90 to 99.9 mol % and an average degree of polymerization of 250 to 3000;
- and a metallic crosslinking agent.
Dependencies are inferred from the claim text.