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2 050 376

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IPC

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Application

4873699/04, 1990-10-15

(22)

Actual filing date

1990-10-15

(45)

Published

1995-12-20

(72)

Inventor

Ignat'Eva Eh.K.Biktimirov R.S.Zgadzaj Eh.A.Modin A.I.Asljamov R.Sh.Galakova N.G.Shevchenko L.F.Zhmykhov I.N.Gorbatenko A.P.Gubanov Eh.F.Zuev B.M.

(73)

Holder

Mogilevskoe Proizvodstvennoe Ob"EdinenieKazanskij Nauchno-Issledovatel'Skij Tekhnologicheskij I Proektnyj Institut Khimiko-Tekhnologicheskoj Promyshlennosti Proizvodstvennogo Ob"Edinenija

METHOD FOR PRODUCTION OF POLYETHYLENE TEREPHTHALATE Russian patent published in 1995 - IPC

Abstract RU 2050376 C1

FIELD: production of polyethylene terephthalate. SUBSTANCE: method is carried out by heating dimethyl terephthalate and ethylene glycol at 150-240 C in the presence of catalyst and product of interaction of phosphoric and boric acids. Quantities of said catalyst and said product are 0.01-0.04 and 0.005-0.03 of dimethyl terephthalate mass respectively. The process is carried out at atmospheric pressure while methanol being distilled. Then pressure is gradually decreased and process is carried out at 260-280 C. EFFECT: improves efficiency of method. 1 tbl

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RU 2 050 376 C1

Authors

Ignat'Eva Eh.K.

Biktimirov R.S.

Zgadzaj Eh.A.

Modin A.I.

Asljamov R.Sh.

Galakova N.G.

Shevchenko L.F.

Zhmykhov I.N.

Gorbatenko A.P.

Gubanov Eh.F.

Zuev B.M.

Dates

1995-12-20—Published

1990-10-15—Filed

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