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2 078 758

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C1

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IPC

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Application

94013085/04, 1994-04-12

(22)

Actual filing date

1994-04-12

(45)

Published

1997-05-10

(72)

Inventor

Zagidullin S.Kh.Daut V.A.Majer V.V.Ozhegov V.I.Kozhukov E.E.Mosheva L.A.

(73)

Holder

Aktsionernoe Obshchestvo Otkrytogo Tipa

METHOD FOR PRODUCTION OF SODIUM FORMIATE Russian patent published in 1997 - IPC

Abstract RU 2078758 C1

FIELD: leather and chemical industries. SUBSTANCE: sodium formiate is prepared by evaporation of mother solution being prepared after isolation of pentaerytritol of reaction mass. Said reaction mass is prepared by condensation of formaldehyde with acetaldehyde in the presence of sodium hydroxide. Crystallization of sodium formiate of solution is carried out under vacuum at residual pressure 6-2 kPa, simultaneously evaporation of portion of water (its quantity being 10-20 % of mass of origin solution). Said solution is cooled to 55-75 C. Then filtration and drying of desired product are carried out. EFFECT: improved efficiency of the method. 2 cl, 1 tbl

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RU 2 078 758 C1

Authors

Zagidullin S.Kh.

Daut V.A.

Majer V.V.

Ozhegov V.I.

Kozhukov E.E.

Mosheva L.A.

Dates

1997-05-10—Published

1994-04-12—Filed

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