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2 076 876

(13)

(51)

IPC

(21) (22)

Application

93056051/04, 1993-12-17

(22)

Actual filing date

1993-12-17

(45)

Published

1997-04-10

(72)

Inventor

Chilipenko N.G.Smirnov Ju.A.Motora V.V.Jarkov P.I.Gerdt A.Eh.Samborskij V.I.Savchenko A.M.

(73)

Holder

Aktsionernoe Obshchestvo

PROCESS FOR PREPARING HIGH MOLECULAR POLYOXYMETHYLENES Russian patent published in 1997 - IPC

Abstract RU 2076876 C1

FIELD: processes for preparing high molecular polyoxymethylenes, more specifically formaldehyde, trioxane and tetraoxane copolymer in solvent. SUBSTANCE: the claimed invention provides process for neutralization of catalyst which makes it possible to use gasoline solvent for copolymerization without washing stage. Excess ammonia present in reaction mixture after neutralization of catalyst is converted into hexamethylene tetramine by adding formaldehyde solution to reaction mixture. EFFECT: more efficient preparation process.

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RU 2 076 876 C1

Authors

Chilipenko N.G.

Smirnov Ju.A.

Motora V.V.

Jarkov P.I.

Gerdt A.Eh.

Samborskij V.I.

Savchenko A.M.

Dates

1997-04-10—Published

1993-12-17—Filed