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2 143 421

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IPC

(21) (22)

Application

98118829/04, 1998-10-12

(24)

Start date

1998-10-12

(22)

Actual filing date

1998-10-12

(45)

Published

1999-12-27

(72)

Inventor

Dmitriev Ju.K.Shurupov E.V.Zagidullin R.N.Nafikova R.F.Rasulev Z.G.Ostrovskij N.A.

(73)

Holder

Sterlitamakskoe Zao

BUTYL BENZYL PHTHALATE PRODUCTION PROCESS Russian patent published in 1999 - IPC

Abstract RU 2143421 C1

FIELD: petrochemical processes. SUBSTANCE: butyl benzyl phthalate is prepared by interaction of sodium monobutyl phthalate with benzyl chloride in presence of triethylamine and alkali reagent (sodium bicarbonate) as catalyst, weight ratio sodium monobutyl phthalate/ benzyl chloride/sodium bicarbonate being equal to 1:(1-1.2):(0.25-0.3). Process is carried out at 90-95 C for 3 h. Invention enables: process to be simplified because of maintaining specified (constant) pH value determined by sodium bicarbonate utilized; required pH value of medium to be established spontaneously immediately after addition of sodium bicarbonate. EFFECT: facilitated process control. 6 ex

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RU 2 143 421 C1

Authors

Dmitriev Ju.K.

Shurupov E.V.

Zagidullin R.N.

Nafikova R.F.

Rasulev Z.G.

Ostrovskij N.A.

Dates

1999-12-27—Published

1998-10-12—Filed