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RU2001107834A - METHOD AND CATALYST FOR PRODUCING DIALKYL CARBONATES - Google Patents

METHOD AND CATALYST FOR PRODUCING DIALKYL CARBONATES

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Publication number
RU2001107834A
RU2001107834A RU2001107834/04A RU2001107834A RU2001107834A RU 2001107834 A RU2001107834 A RU 2001107834A RU 2001107834/04 A RU2001107834/04 A RU 2001107834/04A RU 2001107834 A RU2001107834 A RU 2001107834A RU 2001107834 A RU2001107834 A RU 2001107834A
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RU
Russia
Prior art keywords
snx
specified
catalyst
carbonate
electron
Prior art date
Application number
RU2001107834/04A
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Russian (ru)
Other versions
RU2219162C2 (en
Inventor
Дж. Йонг РИУ
Original Assignee
Каталитик Дистиллейшн Текнолоджиз
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Priority claimed from US09/140,435 external-priority patent/US5902894A/en
Application filed by Каталитик Дистиллейшн Текнолоджиз filed Critical Каталитик Дистиллейшн Текнолоджиз
Publication of RU2001107834A publication Critical patent/RU2001107834A/en
Application granted granted Critical
Publication of RU2219162C2 publication Critical patent/RU2219162C2/en

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Claims (18)

1. Способ получения диалкилкарбонатов, содержащий стадии:1. A method for producing dialkyl carbonates, comprising the steps of: (a) подачи мочевины и первичного спирта в зону реакции;(a) feeding urea and primary alcohol into the reaction zone; (b) подачи оловоорганического соединения и высококипящего растворителя, содержащего электронодонорный атом, в указанную зону реакции; и(b) supplying an organotin compound and a high boiling solvent containing an electron donor atom to said reaction zone; and (c) одновременно в указанной зоне реакции(c) simultaneously in the specified reaction zone (i) взаимодействия части первичного спирта и мочевины в присутствии указанного оловоорганического соединения и указанного высококипящего растворителя, содержащего электронодонорный атом, до получения диалкилкарбоната, и(i) reacting a portion of the primary alcohol and urea in the presence of said organotin compound and said high boiling point solvent containing an electron donor atom to produce a dialkyl carbonate, and (ii) удаления диалкилкарбоната и аммиака из указанной зоны реакции в виде пара.(ii) removing the dialkyl carbonate and ammonia from said reaction zone as a vapor. 2. Способ по п.1, где аммиак и часть указанного спирта удаляют из указанной зоны реакции в виде пара и отводят наряду с указанным диалкилкарбонатом в виде головных погонов.2. The method according to claim 1, where ammonia and part of the indicated alcohol are removed from the specified reaction zone in the form of steam and removed along with the specified dialkyl carbonate in the form of overheads. 3. Способ по п.2, где указанные головные погоны частично конденсируют для отделения указанного аммиака в виде пара от указанного диалкилкарбоната и указанного спирта в качестве жидкости.3. The method of claim 2, wherein said overheads are partially condensed to separate said ammonia in the form of steam from said dialkyl carbonate and said alcohol as a liquid. 4. Способ по п.1, где указанным оловоорганическим катализатором является диметоксид дибутилолова.4. The method according to claim 1, where the specified organotin catalyst is dibutyltin dimethoxide. 5. Способ по п.1, где указанный высококипящий растворитель, содержащий электронодонорный атом, содержит простой эфир полигликоля.5. The method according to claim 1, where the specified high-boiling solvent containing an electron-donating atom, contains a polyglycol ether. 6. Способ по п.1, где указанный высококипящий растворитель, содержащий электронодонорный атом, содержит бидентатные лиганды, которые образуют бидентатные 1:1 и/или монодентатные 1:2 аддукты с R'2SnX2, где Х обозначает С1, R'O, R'COO или R'COS; R’3SnX, R’2SnO, Ph3-nR'SnXn или Ph4-nSnXn, где R' обозначает CqH2q-1, n=0, 1 или 2 и q= 1 - 12, и их смесями.6. The method according to claim 1, where the specified high-boiling solvent containing an electron-donating atom contains bidentate ligands that form bidentate 1: 1 and / or monodentate 1: 2 adducts with R ′ 2 SnX 2 , where X is C1, R′O R'COO or R'COS; R ' 3 SnX, R' 2 SnO, Ph 3-n R'SnX n or Ph 4-n SnX n , where R 'is C q H 2q-1 , n = 0, 1 or 2 and q = 1 - 12 , and their mixtures. 7. Способ по п.6, где указанный высококипящий растворитель, содержащий электронодонорный атом, содержит простой диметиловый эфир триэтиленгликоля.7. The method according to claim 6, where the specified high-boiling solvent containing an electron-donating atom, contains a simple dimethyl ether of triethylene glycol. 8. Способ по п.1, где указанный высококипящий растворитель, содержащий электронодонорный атом, содержит соединения общей формулы RO[СН2(СН2)kCH2O]mR, где каждый R независимо выбран из групп C1-12 алкила, алкарила или аралкила, k=0, 1, 2 или 3 и m=1, 2, 3, 4 или 5, и их смесей.8. The method according to claim 1, where the specified high-boiling solvent containing an electron-donating atom, contains compounds of General formula RO [CH 2 (CH 2 ) k CH 2 O] m R, where each R is independently selected from groups C 1-12 alkyl, alkaryl or aralkyl, k = 0, 1, 2 or 3 and m = 1, 2, 3, 4 or 5, and mixtures thereof. 9. Способ по п.1, где указанным первичным спиртом является метанол, и указанным диалкилкарбонатом является диметилкарбонат.9. The method of claim 1, wherein said primary alcohol is methanol and said dialkyl carbonate is dimethyl carbonate. 10. Способ получения диметилкарбоната, содержащий стадии:10. A method of producing dimethyl carbonate, comprising the steps of: (а) подачи мочевины и метанола в ребойлер перегонной колонны;(a) feeding urea and methanol into the reboiler of the distillation column; (b) подачи катализатора - диалкилолова и простого диметилового эфира триэтиленгликоля как растворителя, сокатализатора в указанный ребойлер;(b) feeding the dialkyltin catalyst and triethylene glycol dimethyl ether as a solvent, cocatalyst into said reboiler; (c) одновременно в указанном ребойлере(c) simultaneously in said reboiler (i) взаимодействия части указанного метанола и мочевины в присутствии указанного катализатора дибутилолова и указанного сокатализатора простого диметилового эфира триэтиленгликоля до образования наконец диметилкарбоната, и(i) reacting a portion of said methanol and urea in the presence of said dibutyltin catalyst and said triethylene glycol dimethyl ether cocatalyst to finally form dimethyl carbonate, and (ii) удаления диметилкарбоната и аммиака из указанного ребойлера в виде пара.(ii) removing dimethyl carbonate and ammonia from said reboiler as a vapor. 11. Способ по п.10, где часть указанного метанола удаляют из указанного ребойлера в виде пара и отводят из указанной перегонной колонны наряду с указанным диметилкарбонатом в виде головных погонов.11. The method according to claim 10, where part of the specified methanol is removed from the specified reboiler in the form of steam and removed from the specified distillation column along with the specified dimethyl carbonate in the form of overheads. 12. Способ по п.11, где указанные головные погоны частично конденсируют для отделения указанного диметилкарбоната и указанного метанола в качестве жидкости.12. The method of claim 11, wherein said overheads are partially condensed to separate said dimethyl carbonate and said methanol as a liquid. 13. Гомогенный катализатор, применимый для взаимодействия мочевины и первичных спиртов для получения диалкилкарбонатов, содержащий комплекс оловоорганического соединения с бидентатным лигандом, который образует бидентатные 1:1 и/или монодентатные 1:2 аддукты с R'2SnX2, где Х обозначает Cl, R'O, R'COO или R'COS; R’3SnX, R'2SnO, Ph3-nR'SnXn или Ph4-nSnXn, где R' обозначает CqH2q-1, n=0, 1 или 2 и q= 1 - 12, и их смесями.13. A homogeneous catalyst, applicable for the interaction of urea and primary alcohols to obtain dialkyl carbonates, containing a complex of an organotin compound with a bidentate ligand, which forms 1: 1 bidentate and / or 1: 2 monodentate adducts with R ′ 2 SnX 2 , where X is Cl, R'O, R'COO or R'COS; R ' 3 SnX, R' 2 SnO, Ph 3-n R'SnX n or Ph 4-n SnX n , where R 'is C q H 2q-1 , n = 0, 1 or 2 and q = 1 - 12 , and their mixtures. 14. Катализатор по п.13, где указанное оловоорганическое соединение содержит диметоксид дибутилолова.14. The catalyst of claim 13, wherein said organotin compound contains dibutyltin dimethoxide. 15. Катализатор по п.13, где указанное высококипящее соединение с электронодонорным атомом содержит простой диметиловый эфир триэтиленгликоля.15. The catalyst of claim 13, wherein said high boiling point compound with an electron donor atom comprises triethylene glycol dimethyl ether. 16. Катализатор по п.13, где указанное оловоорганическое соединение содержит диметоксид дибутилолова и указанное высококипящее соединение с электронодонорным атомом содержит простой диметиловый эфир триэтиленгликоля.16. The catalyst of claim 13, wherein said organotin compound contains dibutyltin dimethoxide and said high boiling point compound with an electron donor atom comprises triethylene glycol dimethyl ether. 17. Гомогенный катализатор по п.13, содержащий комплекс оловоорганического соединения с соединениями общей формулы RO[CH2(CH2)kCH2O]mR, где каждый R независимо выбран из групп C1-12 алкила, алкарила или аралкила, k=0, 1, 2 или 3 и m=1, 2, 3, 4 или 5, и их смесей.17. The homogeneous catalyst according to item 13, containing a complex of organotin compounds with compounds of the general formula RO [CH 2 (CH 2 ) k CH 2 O] m R, where each R is independently selected from the groups C 1-12 alkyl, alkaryl or aralkyl, k = 0, 1, 2 or 3 and m = 1, 2, 3, 4 or 5, and mixtures thereof. 18. Гомогенный катализатор по п.13, где указанное оловоорганическое соединение включает R'2SnX2, R'3SnX, R'2SnO, Ph3-nR'SnXn, Ph4-nSnXn или их смеси.18. The homogeneous catalyst of claim 13, wherein said organotin compound includes R ′ 2 SnX 2 , R ′ 3 SnX, R ′ 2 SnO, Ph 3-n R'SnX n , Ph 4-n SnX n, or mixtures thereof.
RU2001107834/04A 1998-08-26 1999-08-10 Method and catalyst for dialkyl carbonate production RU2219162C2 (en)

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US09/140,435 US5902894A (en) 1998-08-26 1998-08-26 Process for making dialkyl carbonates
US09/140,435 1998-08-26

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EP (1) EP1112120B1 (en)
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