METHOD OF PREPARING METALLIC COMPLEXES OF PHTHALOCYANIN TETRAPHOSPHONIC ACIDS

FIELD: chemical industry. SUBSTANCE: process includes new synthesis of phthalogen which is 3,4-dicarboxyphenyl phosphonic acid. Unlike multistage synthesis known in the prior art, new method makes it possible to obtain product in shorter way. The claimed method comprises phosphilating dimethyl phtha...

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Bibliographische Detailangaben
Hauptverfasser:	JUZHAKOVA O.A, LUK'JANETS E.A, TKACH I.I
Format:	Patent
Sprache:	eng
Schlagworte:	ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAININGELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN,SULFUR, SELENIUM OR TELLURIUM ADHESIVES CHEMISTRY DYES LAKES METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS MORDANTS NATURAL RESINS ORGANIC CHEMISTRY ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES PAINTS POLISHES
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Beschreibung
Zusammenfassung:	FIELD: chemical industry. SUBSTANCE: process includes new synthesis of phthalogen which is 3,4-dicarboxyphenyl phosphonic acid. Unlike multistage synthesis known in the prior art, new method makes it possible to obtain product in shorter way. The claimed method comprises phosphilating dimethyl phthalate with diethyl phosphite in the presence of di-tert-butyl peroxide. The resulting ether is hydrolyzed to 3,4- dicarboxyphenyl phosphonic acid, and potassium salt of said acid is heated together with urea and metal salt in the presence of high-boiling organic solvent and catalylic amounts of ammonium molybdate. EFFECT: more efficient preparation method.