METHOD OF PROTECTION AGAINST CORROSION Russian patent published in 2002 - IPC

FIELD: anticorrosive materials. SUBSTANCE: invention relates to a field of anticorrosive covers. Method is realized by bitumen cover application followed by cold air drying bitumen cover for 5-8 h and then additional layer is applied on the obtained surface. Additional layer comprises the following components, mas. p. p.: phenolformaldehyde oligomer, 10-30; polyvinylacetal, 10-30; inorganic pigment, 5-15; organic solvent, 50- 150. Then cold air drying is carried out for 40-60 min. Paint and varnish material, for example, alkyd enamel can be applied on additional layer. Proposed cover can be used in application of covering paint and varnish material, for example, alkyd enamels on bitumen cover. Method of protection against corrosion ensures to enhance atmosphere resistance of bitumen cover significantly, decrease time of its drying, eliminate limitations by color of bitumen cover and remove its incompatibility with covering paint and varnish materials, for example, with alkyd enamel of any color. EFFECT: improved method of protection. 2 cl, 2 tbl