COMPOSITION FOR ANTI-CORROSION COATING Russian patent published in 2023 - IPC C09D5/08 C09D163/02 

FIELD: metal processing.

SUBSTANCE: invention can be used when applying a protective coating to steel and anodized aluminium products. The anticorrosive coating composition contains an epoxy resin, an epoxyurethane oligomer based on polyfurite, 2,4-toluene diisocyanate and glycidol, an anticorrosive pigment, a filler, an organic solvent, a hardener, and an epoxy-containing diphenylolpropane-formaldehyde oligomer. The organic solvent is a mixture of toluene and butyl cellosolve in a mass ratio of 1:1. As a hardener, an organosilicon diamine with the following formula is used:

. The epoxy-containing diphenylolpropane-formaldehyde oligomer is a compound with the following formula .

EFFECT: invention makes it possible to increase the adhesion of the anti-corrosion coating to steel and anodized aluminium.

1 cl, 5 tbl, 4 ex