Patenton — panteon of patents

(19)

RU

(11)

2 042 672

(13)

C1

(51)

IPC

(21) (22)

Application

5035746/04, 1992-04-03

(22)

Actual filing date

1992-04-03

(45)

Published

1995-08-27

(72)

Inventor

Adamov A.A.Gogleva O.V.Frejdlin G.N.

(73)

Holder

Nauchno-Issledovatel'Skij I Proektnyj Institut Monomerov S Opytnym Zavodom

METHOD OF SYNTHESIS OF PARA-DIOXANONE Russian patent published in 1995 - IPC

Abstract RU 2042672 C1

FIELD: chemical technology. SUBSTANCE: product: p-dioxanone. Standard copper-chrome catalyst BHX-103 containing about 65% Cu and about 45% Cr is used as a catalyst. Distillation of products during reaction is carried out by regulation of phlegm number or heating still intensity in order to bring about the temperature in vapors 195-200 C. Final purification of para-dioxanone is carried out by distillation under vacuum (2-3 mm mercury column) in the presence of boric acid. Purity degree of the product is 99.99% Method is used for monomer synthesis. EFFECT: improved method of synthesis.

Similar patents RU2042672C1

Title Year Author Number
METHOD OF SYNTHESIS OF NAPHTHALENE-2,6-DICARBOXYLIC ACID 1992
  • Manzurov V.D.
  • Morozov V.M.
  • Kovalev L.S.
 RU2030386C1
METHOD OF PREPARING OF ALKOXY-DERIVATIVES OF IRON (III) 1991
  • Solov'Eva L.I.
  • Kovsman E.P.
  • Kessler V.G.
  • Turova N.Ja.
 RU2017712C1
PROCESS FOR PREPARING PHTHALIC ACID ISOMERS HAVING HIGH PURIFICATION DEGREE 1993
  • Nazimok V.F.
  • Goncharova N.N.
  • Jur'Ev V.P.
  • Manzurov V.D.
 RU2047595C1
METHOD OF ISOLATING TETRABUTOXYTITANIUM FROM REACTION MASS PREPARED BY ELECTROCHEMICAL TITANIUM DISSOLVING 1987
  • Rogova T.V.
  • Kovsman E.P.
  • Turova N.Ja.
  • Rassokhin I.V.
 RU1467964C
METHOD OF PREPARING OF METAL ALKOXIDE SOLUTIONS 1991
  • Solov'Eva L.I.
  • Kovsman E.P.
  • Janovskaja M.I.
 RU2017713C1
METHOD OF P-DIOXANONE PREPARATION 0
  • Belenkaya Bronislava Grigorevna
  • Polyakov Dmitrij Konstantinovich
  • Filatova Vera Nikolaevna
  • Sakharova Valentina Igorevna
  • Adamov Arij Artemevich
  • Gogleva Olga Viktorovna
  • Nesterova Rimma Grigorevna
 SU1700001A1
METHOD OF SYNTHESIS OF METHYLENE-BIS-ANTHRANILIC ACID 1982
  • Gogenko G.P.
  • Manzurov V.D.
  • Kovalev L.S.
 RU1750166C
METHOD OF SYNTHESIS OF FORMYLBUTYRIC ACID METHYL ESTER 1992
  • Frejdlin G.N.
  • Solop K.A.
  • Batel'Man V.D.
  • Majranovskij V.G.
  • Gitlin I.G.
 RU2042660C1
METHOD OF SYNTHESIS OF ANHYDROTRIMELLITIC ACID CHLOROANHYDRIDE 1986
  • Vulakh E.L.
  • Bark D.S.
  • Seina Z.N.
  • Ivanova V.M.
  • Sochinskaja D.P.
  • Bubentsova Z.I.
 RU1372873C
PROCESS FOR PREPARING β-CAROTIN 1992
  • Kovsman E.P.
  • Solop K.A.
  • Batel'Man V.D.
  • Karymova T.I.
  • Samokhvalov G.I.
  • Vakulova L.A.
  • Zhidkova T.A.
 RU2034835C1

RU 2 042 672 C1

Authors

Adamov A.A.

Gogleva O.V.

Frejdlin G.N.

Dates

1995-08-27—Published

1992-04-03—Filed

read Similar patents