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Application filed by Ереванский политехнический институт им. К.МарксаfiledCriticalЕреванский политехнический институт им. К.Маркса
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FIELD: chemical industry. SUBSTANCE: preparation of steel acid corrosion inhibitor; preparation of dark brown crystalline substance having molecular weight of 600-680. Reagent 1: o-phenylanediamine. reagent 2: 1,4-dichloro-2-butene. Reaction conditions: equimolar ratio of reagents 1 and 2, isobutanol, temperature 55-90 C. Yield 91.4%. EFFECT: improved properties of the inhibitor. 2 tbl
SU4811556/04A1989-11-281989-11-28Process for preparing steel acid corrosion inhibitor
SU1817448A1
(en)
2,2'-dihydroxy-5,5'-methylenedi-(p-toluenesulphonic acid)and its salts,processes for its preparation and pharmaceutical compositions containing it