VINYL TAPE FOR MECHANICAL AND ANTICORROSION PROTECTION Russian patent published in 2015 - IPC C09J7/02 C09J109/02 

FIELD: chemistry.

SUBSTANCE: pressure-sensitive tape for anticorrosion protection of steel pipes, used mainly in cases of repair and exploitation, contains vinyl base - tape, laminated with adhesive based on nitrile rubber, of the following composition: from approximately 30.7 to approximately 34.0% (wt/wt) of solid butadiene-acrylnitrile rubber (NBR); from approximately 0.57 to approximately 0.63% (wt/wt) of antioxidant; from approximately 9.7 to approximately 12.9% (wt/wt) of hydrocarbon resin; from approximately 1.52 to approximately 1.68% (wt/wt) of zinc oxide; from approximately 8.7 to approximately 9.5% (wt/wt) of liquid butadiene-acrylnitrile ribber (NBR); from approximately 4.0 to approximately 4.4% (wt/wt) of aluminium hydrosilicate; from approximately 5.5 to approximately 7.5% (wt/wt) of diisononylphthalate; from approximately 0.66 to approximately 0.74% (wt/wt) of soot; from approximately 1.5 to approximately 1.7% (wt/wt) of amorphous silica; and from approximately 25.8 to approximately 38.8% (wt/wt) of magnesium and calcium carbonate. It is ideal to apply tape in combination with primer, which enhances adhesion between pipe and adhesive part of tape.

EFFECT: good ability of tape to correspond to irregular surfaces, good elasticity, good shock-resistance, excellent adhesion to pipe, good cathode separation.

3 cl, 3 dwg, 3 tbl