PENETRANT FOR LUMINESCENT DEFECTOSCOPY Russian patent published in 1997 - IPC

FIELD: luminescent materials. SUBSTANCE: penetrant containing 4-aminonaphthalic acid phenylimide and 4-methyl-7-diethylaminocoumarin as luminophore and kerosene has additionally wetting agent, - a mixture of polyethylene glycol esters of mono- and dialkylphenols, N-methylpyrrolidone and dibutylphthalate at the following ratio of components, weight %: 4-aminonaphthalic acid phenylimide 0.6-0.7; 4-methyl-7-diethaylaminocoumarin 0.2-0.4; wetting agent 4.4-5.0; N-methylpyrrolidone 46-50; kerosene 7-8, and dibutylphthalate - the rest. EFFECT: enhanced luminescence intensity and development capacity, increased penetrant removing from surface.