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2 158 178

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IPC

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Application

99107876/04, 1999-04-09

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Start date

1999-04-09

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Actual filing date

1999-04-09

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Published

2000-10-27

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Inventor

Martynov N.V.Nagirnjak A.T.Al'Brekht S.N.

(73)

Holder

Tovarishchestvo S Ogranichennoj Otvetstvennost'Ju Nauchno-Vnedrencheskoe Predprijatie

ANILINE-INTO-DIPHENYLAMINE CONDENSATION CATALYST SOLUTION AND METHOD OF PREPARATION THEREOF Russian patent published in 2000 - IPC

Abstract RU 2158178 C1

FIELD: organic synthesis catalysts. SUBSTANCE: catalyst solution contains 1.6 to 98.6% of aniline, water (0.4-12.4%) and, as active constituent, hydroxytrifluoroboric acid anilinium salt (1.0- 36.0%). When preparing composition, ortoboric acid is first dissolved in hydrofluoric acid, after which aniline is added at stirring. EFFECT: simplified preparation procedure. 2 cl, 6 ex

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RU 2 158 178 C1

Authors

Martynov N.V.

Nagirnjak A.T.

Al'Brekht S.N.

Dates

2000-10-27—Published

1999-04-09—Filed

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