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2 106 331

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Application

96123886/04, 1996-12-20

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Actual filing date

1996-12-20

(45)

Published

1998-03-10

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Inventor

Borejko N.P.Patanova I.M.Surovtsev A.A.Pavlov S.Ju.Sakhapov G.Z.Serebrjakov B.R.Belokurov V.A.Zuev V.P.

(73)

Holder

Aktsionernoe Obshchestvo

METHOD OF INHIBITING POLYMERIZATION OF VINYL AROMATIC HYDROCARBONS Russian patent published in 1998 - IPC

Abstract RU 2106331 C1

FIELD: chemistry of polymers. SUBSTANCE: method of inhibiting polymerization of vinyl aromatic hydrocarbons comprises adding inhibiting agent. The inhibiting agent is product resulting from oxidation of 2,2′,6,6′-tetramethyl-4-oxo-piperidine and including (wt %): 55-92 2,2′,6,6′-tetramethyl-4-oxopiperidine-1-octyl; 4-35-2,2′,6,6′- tetramethyl-4-oxopiperidine; 1-8-2,2′,6,6′-tetramethyl-1- hydroxy-4-oxopiperidine; and 1-9 impurities. Inhibiting agent is used in amount of 0.02-0.3 wt % preferably 0.03- 0.1 wt % vinyl aromatic hydrocarbons. Inhibiting agent comprises solution of said oxidation product in organic solvent. EFFECT: more efficient inhibition method. 2 cl, 3 tbl

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RU 2 106 331 C1

Authors

Borejko N.P.

Patanova I.M.

Surovtsev A.A.

Pavlov S.Ju.

Sakhapov G.Z.

Serebrjakov B.R.

Belokurov V.A.

Zuev V.P.

Dates

1998-03-10—Published

1996-12-20—Filed

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