| 摘要 |
Chelate forming coating compns. contained epoxy resin(contg. >=2 epoxy group), active H-contg. amino type hardener (contg. >=2 N), 5-30 wt.% phenolcarboxylic acid and org. sol. vent. Thus, 100 parts bisphenol type epoxy resin(epoxy equiv. 450-500) was dissolved in 100 parts BuOCH2CH2OH(I) and mixed with 50 parts red iron oxide, 100 parts talc, 50 parts BaSO4 and 100 parts I to give the main compn. 100 parts polyamide (amine value 300±20) and 15 parts gallic acid, were heated at 140-150≦̸Cn and thinned with I to give 50% hardener soln. which was mixed in 100:18 solid ratio with the main compn.
|
