METHOD FOR PREPARING DIMETHYL PHOSPHITE Russian patent published in 2005 - IPC

Abstract RU 2261864 C1

FIELD: organic chemistry, chemical technology.

SUBSTANCE: invention relates to the improved method for preparing dimethyl phosphite. Invention describes a method for preparing dimethyl phosphite involving interaction of phosphorus trichloride with methanol in medium with evaporating methyl chloride, under reduced pressure, by steaming out highly volatile components and the following purification of prepared product by vacuum distillation. The process is carried out in the mole ratio of methanol to phosphorus trichloride = (3.02-3.3):1, in their volume ratio = (1.43-1.53):1, respectively, and under residual pressure 0.01-0.04 MPa. Invention provides enhancing technological effectiveness and safety of the process.

EFFECT: improved preparing method.

2 cl, 1 tbl, 10 ex

Similar patents RU2261864C1

Title	Year	Author	Number
PROCESS FOR PRODUCING LOWER DIALKYL PHOSPHATES	0	Gabor Sabo Karoj Yakush Dyula Syuk	SU910123A3
METHOD OF PHOSPHOROUS ACID PRODUCTION	1991	No B.I. Jukhno Ju.M. Mednikov E.V. Klimov S.A. Tarasov V.F. Stepanov V.I. Smirnov V.I.	RU2022918C1
METHOD OF PRODUCING INHIBITOR OF MINERAL SALT DEPOSITS	0	Samborskij Igor Vasilevich Vakulenko Viktor Alekseevich Potapenko Larisa Petrovna Driker Boris Nutovich Abramov Ilya Anatolevich Shevnitsyn Leonid Sergeevich Romanov Viktor Mineevich	SU814896A1
PROCESS FOR PRODUCING INHIBITOR OF MINERAL SALT DEPOSITION	0	Vakulenko Viktor Alekseevich Samborskij Igor Vasilevich Kuznetsova Elena Petrovna Driker Boris Nutovich Yakushkin Mikhail Ivanovich	SU966037A1
METHOD OF PREPARING BETA-CHLOROETHYLPHOSPHONIC ACID	0	Brel Anatolij Kuzmich Mudryj Florij Vasilevich Rakhimov Aleksandr Imanuilovich Loskutov Luidzhi Georgievich Libman Boris Yakovlevich Vinnikov Evsej Abramovich Demchenko Vladimir Ivanovich	SU810713A1
PROCESS FOR PRODUCING INHIBITOR OF MINERAL SALT DEPOSITIONS	0	Vakulenko Viktor Alekseevich Samborskij Igor Vasilevich Kuznetsova Elena Petrovna Dunyushkin Evgenij Stepanovich Driker Boris Nutovich Dyatlova Nina Mikhajlovna Temkina Vera Yakovlevna Rudomino Marianna Vasilevna Romanov Viktor Mineevich	SU992519A1
PROCEDURE FOR PRODUCTION OF CORROSION INHIBITOR IN MINERALISED WATER MEDIUMS	2010	Panteleeva Al'Bina Romanovna Kuznetsov Aleksandr Viktorovich Tishankina Raisa Fazylovna Dmitrieva Elena Klement'Evna Kostrova Marija Ivanovna Sagdiev Nijaz Ravil'Evich Polovnjak Sergej Valentinovich	RU2436869C1
PROCESS FOR PRODUCING INHIBITOR OF MINERAL SALT DEPOSITS	0	Samborskij Igor Vasilevich Vakulenko Viktor Alekseevich Potapov Vladimir Petrovich Chetverikova Alevtina Timofeevna Abramov Ilya Anatolevich Shevnitsyn Leonid Sergeevich Romanov Viktor Mineevich Driker Boris Nutovich Bulashev Vadim Mikhajlovich	SU973543A1
METHOD OF PREPARING SOLID CHLOROPARAFFIN	1996	Gordon E.P. Klimov S.A. Mitrokhin A.M. Nesterjuk V.A. Nikolenko V.S.	RU2111947C1
	0	Inostranets Garold Emil Sorstokk Soedinennye Shtaty Ameriki Inostranna Firma Stauffer Kemikal Soedineinye Shtaty Ameriki	SU218764A1

RU 2 261 864 C1

Authors

Orlova T.V.

Stepanova A.G.

Efremov A.I.

Zhukov N.V.

Veselov A.V.

Kamaletdinov S.A.

Dates

2005-10-10—Published

2004-05-05—Filed