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(19)

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2 500 614

(13)

(51)

IPC

C01B17/90(2006-01-01)

C02F103/38(2006-01-01)

C08G75/14(2006-01-01)

C01F5/40(2006-01-01)

(21) (22)

Application

2012119071/05, 2012-05-10

(24)

Start date

2012-05-10

(22)

Actual filing date

2012-05-10

(45)

Published

2013-12-10

(72)

Inventor

Konturov Aleksej Valer'EvichBrojda Vladimir MikhajlovichPavel'Eva Nadezhda PetrovnaTikhonova Ljubov' Mikhajlovna

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo Zavod Sinteticheskogo Kauchuka"

METHOD OF SULFURIC ACID WASTES UTILISATION Russian patent published in 2013 - IPC C01B17/90 C02F103/38 C08G75/14 C01F5/40

Abstract RU 2500614 C1

FIELD: chemistry.

SUBSTANCE: invention relates to field of chemistry. Wastes of sulfuric acid from synthesis of 2,2'-dichlordiethylformal of polysulfide polymer production, containing ethylenechlorohydrine and paraformaldehyde admixtures, are processed with magnesium hydroxide until medium with acidity pH=6.5-7.0 is obtained, from ethylenechlorohydrine and paraformaldehyde admixtures are separated by decantation with possibility of their recycling is synthesis of 2,2'-dichlorodiethylformal. The remaining water solution of formed magnesium sulphate after its dilution with water to concentration 200-270 g/dm³ is supplied to stage of polycondensation of polysulfide polymer production for its application as dispenser.

EFFECT: invention makes it possible to sparingly use raw material resources and prevents pollution of environment with highly toxic wastes.

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RU 2 500 614 C1

Authors

Konturov Aleksej Valer'Evich

Brojda Vladimir Mikhajlovich

Pavel'Eva Nadezhda Petrovna

Tikhonova Ljubov' Mikhajlovna

Dates

2013-12-10—Published

2012-05-10—Filed