RU96117018A - METHOD FOR PRODUCING DISULFOMALEIN ANHYDRIDE - Google Patents

METHOD FOR PRODUCING DISULFOMALEIN ANHYDRIDE

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Publication number
RU96117018A
RU96117018A RU96117018/04A RU96117018A RU96117018A RU 96117018 A RU96117018 A RU 96117018A RU 96117018/04 A RU96117018/04 A RU 96117018/04A RU 96117018 A RU96117018 A RU 96117018A RU 96117018 A RU96117018 A RU 96117018A
Authority
RU
Russia
Prior art keywords
anhydride
reaction mass
producing
sulfur trioxide
liquid sulfur
Prior art date
Application number
RU96117018/04A
Other languages
Russian (ru)
Other versions
RU2123494C1 (en
Inventor
С.А. Панаева
С.А. Малютин
Ю.Д. Панаев
Н.Д. Сорокина
О.Г. Лиходед
Г.Г. Ушкалова
Original Assignee
Открытое акционерное общество "Шебекинский химический завод"
Filing date
Publication date
Application filed by Открытое акционерное общество "Шебекинский химический завод" filed Critical Открытое акционерное общество "Шебекинский химический завод"
Priority to RU96117018A priority Critical patent/RU2123494C1/en
Priority claimed from RU96117018A external-priority patent/RU2123494C1/en
Publication of RU96117018A publication Critical patent/RU96117018A/en
Application granted granted Critical
Publication of RU2123494C1 publication Critical patent/RU2123494C1/en

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Claims (3)

1. Способ получения дисульфомалеинового ангидрида, осуществляемого при охлаждении взаимодействием малеинового ангидрида и жидкой трехокиси серы в молярном соотношении 1:1,1 с последующим нагреванием до 35oС, приводящем к экзотермической реакции, удерживаемой в температурном пределе 35 - 50oС за счет охлаждения и перемешивания, завершающейся охлаждением и последующим нагреванием до 60oС и выдерживанием реакционной массы в течение 5,5 часа отличающийся тем, что время экзотермии на первой ступени составляет 12 - 15 мин. , а на ступени повторного сульфирования время экзотермии 6 - 10 мин., осуществляемой в температурном пределе 35 - 45oС с последующим нагреванием до 65 - 75oС и выдерживанием реакционной массы в течение 4 - 5 часов.1. The method of producing disulfomaleic anhydride, carried out during cooling by the interaction of maleic anhydride and liquid sulfur trioxide in a molar ratio of 1: 1.1, followed by heating to 35 o C, leading to an exothermic reaction, kept in the temperature range of 35 - 50 o C due to cooling and stirring, ending with cooling and subsequent heating to 60 o C and maintaining the reaction mass for 5.5 hours, characterized in that the exothermic time in the first stage is 12 to 15 minutes and at the stage of re-sulfonation, the exothermy time is 6-10 minutes, carried out in the temperature range of 35 - 45 ° C, followed by heating to 65 - 75 ° C and keeping the reaction mass for 4-5 hours. 2. Способ по п. 1 отличающийся тем, что температура реакционной массы после смешения малеинового ангидрида и жидкой трехокиси серы составляет +5oС.2. The method according to p. 1 characterized in that the temperature of the reaction mass after mixing maleic anhydride and liquid sulfur trioxide is +5 o C. 3. Способ по п. 1 отличающийся тем, что температура реакционной массы после смешения сульфомалеинового ангидрида и жидкой трехоксиси серы составляет +5oС.3. The method according to p. 1 characterized in that the temperature of the reaction mass after mixing sulfomaleic anhydride and liquid sulfur trioxide is +5 o C.
RU96117018A 1996-08-20 1996-08-20 Method of synthesis of disulfomaleic anhydride RU2123494C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU96117018A RU2123494C1 (en) 1996-08-20 1996-08-20 Method of synthesis of disulfomaleic anhydride

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU96117018A RU2123494C1 (en) 1996-08-20 1996-08-20 Method of synthesis of disulfomaleic anhydride

Publications (2)

Publication Number Publication Date
RU96117018A true RU96117018A (en) 1998-12-10
RU2123494C1 RU2123494C1 (en) 1998-12-20

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Family Applications (1)

Application Number Title Priority Date Filing Date
RU96117018A RU2123494C1 (en) 1996-08-20 1996-08-20 Method of synthesis of disulfomaleic anhydride

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RU (1) RU2123494C1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL339110A1 (en) * 2000-03-19 2001-09-24 Tadeusz Bugalski Composition preventing deposition of boiler scale and corrosion of apparatus in a thermal pure water, in particular sterile one, obtaining process

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