Corrosion-resistant coating material

Abstract

Abstract PURPOSE:To obtain the title material having an excellent rust-inhibitive effect and being useful for the surface coating of, e.g., a rare earth element/iron/boron permanent magnet by using a mercapto triazine derivative, a tannic acid (derivative) and a resin material as the principal components. CONSTITUTION:A mercapto triazine derivative of the formula [wherein R is SH, N(CH3)2, NHC6H5, N(C4H9)2, N(C8H17)2, H(C12H24)2, N(CH2CH=CH2)2 or the like], tannic acid or its derivative, such as polytannic acid or a tannic acid ether or ester, and a resin material comprising an ester formed from, desirably, a polycarboxylic acid such as maleic acid or fumaric acid and a polyol such as ethylene glycol or glycerol and an epoxy compound which can be crosslinked by an addition reaction with said ester are used as the principal components.

Inventors

• 👤 Toshihiro Kobayashi
• 👤 敏宏 小林
• 👤 Takafumi Kuwazawa
• 👤 隆文 桑沢
• 👤 Toshimasa Kobayashi
• 👤 寿政 小林

Bibliographic Details