COMPOSITION FOR PROTECTIVE COATING Russian patent published in 1995 - IPC

FIELD: protective materials. SUBSTANCE: composition has, mas. p. epoxy diane resin containing 18-23% epoxy group ED-20 100-120; polyethylenepolyamine 15-18; cast iron powder of fraction 20-63 mcm worked in argon medium at 250-300 C for 40-45 min high-alloyed with nickel and copper. Properties: shift strength limit is up to 51 MPa, at rupture up to 35 MPa, strength limit after 50 cycles heating up to 85 C is up to 49.5 MPa, at shift is up to 35 MPa, at rupture is 99.5 MPa. Alkali stability in 40% NaOH is up to 99.5% after 50 cycles is 99% permeability is -0,28·10^-8 by H₂ m²/h PA. Composition is used for metal structure protection working under alkaline conditions. EFFECT: enhanced quality of composition. 2 tbl