FIELD: protection of underground pipe lines against corrosion in erecting and repairing them. SUBSTANCE: polymer primer contains butyl rubber, colophony, zinc white, aluminium hydroxide, resin, gasoline, toluene, phenazone, dialkylphosphate and distilled amine; it is modified by paraquinone dioxime, hydroperoxide of isopropylene benzene and ferrocene or diethylferrocene. Formula, sequence and duration of loading components, as well as modes for mixing, heating and cooling the mixture are given in Description. EFFECT: enhanced efficiency. 7 cl, 3 dwg
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Authors
Dates
1997-07-27—Published
1996-07-10—Filed