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2 060 989

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IPC

(21) (22)

Application

93021691/04, 1993-04-26

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Actual filing date

1993-04-26

(45)

Published

1996-05-27

(72)

Inventor

Belosludtsev Vjacheslav MikhajlovichKropachev Vladimir BorisovichSmirnova Margarita AleksandrovnaRacheva Margarita AleksandrovnaKladova Natal'Ja VladimirovnaJastrebova Galina Mikhajlovna

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Holder

Belosludtsev Vjacheslav MikhajlovichKropachev Vladimir BorisovichSmirnova Margarita AleksandrovnaRacheva Margarita AleksandrovnaKladova Natal'Ja VladimirovnaJastrebova Galina Mikhajlovna

METHOD OF DIPHENYLAMINE SYNTHESIS Russian patent published in 1996 - IPC

Abstract RU 2060989 C1

FIELD: organic chemistry. SUBSTANCE: product: diphenylamine. Reagent 1: aniline. Reaction conditions: thermic treatment in the presence of catalyst of bidispersed porous structure which shows total pore volume 0,45 cm³/g or above, pore volume of radius above 1000 is 0,27 cm³/g (not less), specific surface is 200 200 m²/g (not less). Catalyst is obtained from thermic or thermic-mechanical-chemically activated aluminium hydroxide at mixing with ortho-phosphoric acid and plasticized at acidic modulus 0.02-0.07. Before drying the catalyst is sun-dried in the air. EFFECT: improved method of synthesis. 2 cl, 1 tbl

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RU 2 060 989 C1

Authors

Belosludtsev Vjacheslav Mikhajlovich

Kropachev Vladimir Borisovich

Smirnova Margarita Aleksandrovna

Racheva Margarita Aleksandrovna

Kladova Natal'Ja Vladimirovna

Jastrebova Galina Mikhajlovna

Dates

1996-05-27—Published

1993-04-26—Filed