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2 085 551

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C1

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IPC

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Application

95114062/04, 1995-08-07

(22)

Actual filing date

1995-08-07

(45)

Published

1997-07-27

(72)

Inventor

Surovtsev A.A.Karpov O.P.Pavlov S.Ju.Tul'Chinskij Eh.A.Dolinkin V.N.Sukacheva T.N.

(73)

Holder

Tovarishchestvo S Ogranichennoj Otvetstvennost'Ju Tsentr Po Neftekhimicheskim Tekhnologijam"Tovarishchestvo S Ogranichennoj Otvetstvennost'Ju

METHOD OF ISOPRENE SYNTHESIS Russian patent published in 1997 - IPC

Abstract RU 2085551 C1

FIELD: chemical technology. SUBSTANCE: invention relates to method of isoprene synthesis by liquid-phase interaction of formaldehyde with isobutylene and/or trimethylcarbinol. Process is carried out in two successive reaction zones at increased temperature and pressure in the presence of catalyst based on phosphoric acid, hydroxyethylidenephosphonic acid and hexamethylenetetramine taken at their mass ratio to phosphoric acid = (0.01-0.1):(0.02-0.2):1. EFFECT: increased yield of isoprene. 1 tbl

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RU 2 085 551 C1

Authors

Surovtsev A.A.

Karpov O.P.

Pavlov S.Ju.

Tul'Chinskij Eh.A.

Dolinkin V.N.

Sukacheva T.N.

Dates

1997-07-27—Published

1995-08-07—Filed

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