PHOSPHATE COATING PRIMING Russian patent published in 1994 - IPC

FIELD: protective materials. SUBSTANCE: priming has, % : chloroprenic rubber 7-5; plasticizer 1-8; ortho-phosphoric acid 1.5-5.0; pyridine complexing agent 0.5-2.0; alkylphenolformaldehyde resin 3-15; polyisocyanate 0.1-3.5; active filler 0.1-8.0; magnesium oxide 0.2-1.5, and organic solvent - the rest. Properties: adhesion at metal detachment at 20 C is 20, 1-24,8 kgf/cm², at 60 C is 17-19,8 kgf/cm², detachment strength at the tension at 20, 60 and 80 C: 21.6-28.1; 15.1-21.6 and 13-18 kgf/cm², respectively. Priming is used for protective coating of metal structure against rust. EFFECT: enhanced quality of priming. 1 tbl