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2 377 184

(13)

(51)

IPC

C01G29/00(2006-01-01)

C07F9/94(2006-01-01)

C07C65/10(2006-01-01)

(21) (22)

Application

2008142590/15, 2008-10-27

(24)

Start date

2008-10-27

(22)

Actual filing date

2008-10-27

(45)

Published

2009-12-27

(72)

Inventor

Jukhin Jurij MikhajlovichTimakova Evgenija VladimirovnaDaminova Tat'Jana VladimirovnaUdalova Tat'Jana Aleksandrovna

(73)

Holder

Institut Khimii Tverdogo Tela I Mekhanokhimii Sibirskogo Otdelenija Rossijskoj Akademii Nauk Status Gosudarstvennogo Uchrezhdenija So Ran)

METHOD FOR MAKING BASIC BISMUTH SALICYLATE Russian patent published in 2009 - IPC C01G29/00 C07F9/94 C07C65/10

Abstract RU 2377184 C1

FIELD: medicine.

SUBSTANCE: invention can be used in medicine and pharmaceutics. Basic bismuth nitrate BiONO₃·H₂O is dissolved in an aqueous solution of salicylic acid at mole ratio of salicylic acid to bismuth 1-1.2 and pH of the solution 0.9-3.0. The solution is heated up to temperature 50-85°C and stirred during 15-240 minutes. Past precipitation of basic bismuth slicylate is recovered from the solution by elution, washed with water at temperature 60°C and dried at temperature 90°C.

EFFECT: invention allows simplifying and accelerating production process, reducing expenses and improving bismuth recovery rate in the end product to 99,99%.

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RU 2 377 184 C1

Authors

Jukhin Jurij Mikhajlovich

Timakova Evgenija Vladimirovna

Daminova Tat'Jana Vladimirovna

Udalova Tat'Jana Aleksandrovna

Dates

2009-12-27—Published

2008-10-27—Filed