VERFAHREN ZUM VERHINDERN DER BILDUNG VON POLYMERISIERTEN VINYLAROMATISCHEN VERBINDUNGEN

VERFAHREN ZUM VERHINDERN DER BILDUNG VON POLYMERISIERTEN VINYLAROMATISCHEN VERBINDUNGEN

PCT No. PCT/IB94/00240 Sec. 371 Date Jan. 23, 1996 Sec. 102(e) Date Jan. 23, 1996 PCT Filed Jul. 18, 1994 PCT Pub. No. WO95/03263 PCT Pub. Date Feb. 2, 1995A method for inhibiting the polymerization of vinyl aromatics such as styrene with a mixture of 3,5-di-tert-butyl-4-hydroxy-N,N-dimethylbenzyl a...

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Hauptverfasser: KOURBATOV, VLADIMIR ANATOLIEVICH, MOSCOW, 112059, RU, ZOUEV, VALERII PAVLOVICH, APARTMENT 94, NISCHNEKAMSK, 423550, RU, BOREYKO, NATALJYA PAVLOVNA, NISCHNEKAMSK, 423550, RU, LIAKUMOVICH, ALEXANDR GRIGORIEVICH APARTMENT 8, KAZAN, 420072, RU
Format: Patent
Sprache:ger
Schlagworte:
ACYCLIC OR CARBOCYCLIC COMPOUNDS
APPARATUS THEREFOR
CHEMISTRY
GENERAL METHODS OF ORGANIC CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
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Zusammenfassung:PCT No. PCT/IB94/00240 Sec. 371 Date Jan. 23, 1996 Sec. 102(e) Date Jan. 23, 1996 PCT Filed Jul. 18, 1994 PCT Pub. No. WO95/03263 PCT Pub. Date Feb. 2, 1995A method for inhibiting the polymerization of vinyl aromatics such as styrene with a mixture of 3,5-di-tert-butyl-4-hydroxy-N,N-dimethylbenzyl amine and carboxylic acids or anhydrides thereof, in the presence of air or oxygen. The weight ratio of said 3,5-Di-tert-butylhydroxy-N,N-dimethylbenzyl amine, carboxylic acid (or carboxylic acid anhydride) and the air is 1:1 to 0.05:0.05 to 15, respectively.