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ES8402260A1 - Procedimiento continuo para la disociacion de esteres de acido carbamico. - Google Patents

Procedimiento continuo para la disociacion de esteres de acido carbamico.

Info

Publication number
ES8402260A1
ES8402260A1 ES521887A ES521887A ES8402260A1 ES 8402260 A1 ES8402260 A1 ES 8402260A1 ES 521887 A ES521887 A ES 521887A ES 521887 A ES521887 A ES 521887A ES 8402260 A1 ES8402260 A1 ES 8402260A1
Authority
ES
Spain
Prior art keywords
reactor
fractions
fraction
acid esters
carbamic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
ES521887A
Other languages
English (en)
Other versions
ES521887A0 (es
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bayer AG
Original Assignee
Bayer AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bayer AG filed Critical Bayer AG
Publication of ES8402260A1 publication Critical patent/ES8402260A1/es
Publication of ES521887A0 publication Critical patent/ES521887A0/es
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C263/00—Preparation of derivatives of isocyanic acid
    • C07C263/04—Preparation of derivatives of isocyanic acid from or via carbamates or carbamoyl halides

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

PROCEDIMIENTO CONTINUO PARA LA DISOCIACION TERMICA DE ESTERES DE ACIDO CARBAMICO N-MONOSUSTITUIDOS, BAJO UNA PRESION DE 0,001 HASTA 20 BAR Y UNA TEMPERATURA DE 150 HASTA 450 GRADOS. COMPRENDE LAS SIGUIENTES OPERACIONES: PRIMERA, LA DISOCIACION TERMICA SE REALIZA EN UN REACTOR TUBULAR DEJANDOSE FLUIR HACIA ABAJO EL ESTER DEL ACIDO CARBAMICO A DISOCIAR EN FORMA LIQUIDA POR LA PARED INTERIOR DEL REACTOR BUTULAR O CONDUCIENDOLE ALO LARGO DE ESTA: SEGUNDA, LOSPRODUCTOS DE DISOCIACION QUE BAJO CONDICIONES DE REACCION SE OBTIENEN EN FORMA DE GAS SE RETIRAN POR LA CABEZA DEL REACTOR TUBULAR; Y POR ULTIMO, LOS PRODUCTOS DE DISOCIACION QUE BAJO LAS CONDICIONES DE REACCICON SE OBTIENEN, EN CADA DADO, COMO LIQUIDO SE RETIRAN POR EL PIE DEL REACTOR TUBULAR.
ES521887A 1982-04-27 1983-04-27 Procedimiento continuo para la disociacion de esteres de acido carbamico. Granted ES521887A0 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19823215591 DE3215591A1 (de) 1982-04-27 1982-04-27 Verfahren zur kontinuierlichen thermischen spaltung von carbamidsaeureestern

Publications (2)

Publication Number Publication Date
ES8402260A1 true ES8402260A1 (es) 1984-01-16
ES521887A0 ES521887A0 (es) 1984-01-16

Family

ID=6162030

Family Applications (1)

Application Number Title Priority Date Filing Date
ES521887A Granted ES521887A0 (es) 1982-04-27 1983-04-27 Procedimiento continuo para la disociacion de esteres de acido carbamico.

Country Status (7)

Country Link
US (1) US4692550A (es)
EP (1) EP0092738B1 (es)
JP (1) JPS58194849A (es)
BR (1) BR8302136A (es)
CA (1) CA1216588A (es)
DE (2) DE3215591A1 (es)
ES (1) ES521887A0 (es)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1183332B (it) * 1985-02-08 1987-10-22 Enichem Sintesi Procedimento per la produzione di n-metilcarbammati
US4873365A (en) * 1986-04-04 1989-10-10 American Cyanamid Company Process for the preparation of isophorone diisocyanate from isophorone dicarbamyl esters using highly selective SnO2 or CuO catalysts
EP0271679A3 (en) * 1986-11-03 1988-11-23 American Cyanamid Company Isocyanates derived from dienes and process and their preparation
JP2538222B2 (ja) * 1986-12-26 1996-09-25 ダイセル化学工業株式会社 イソホロンジイソシアネ−トの製造方法
DE3915181A1 (de) * 1989-05-10 1990-11-15 Bayer Ag Verfahren zur herstellung von polyisocyanaten
IT1244476B (it) * 1990-12-21 1994-07-15 Enichem Sintesi Procedimento continuo per la preparazione di isociamati
DE4124671A1 (de) * 1991-07-25 1993-01-28 Basf Ag Reaktor und verfahren zur thermischen spaltung von carbamidsaeureestern
DE4141402A1 (de) * 1991-12-16 1993-06-17 Bayer Ag Verfahren zur herstellung von hochreinen aromatischen di- und/oder polyurethanen
DE4213099A1 (de) * 1992-04-21 1993-10-28 Basf Ag Mehrstufiges Verfahren zur kontinuierlichen Herstellung von organischen Polyisocyanaten
DE4231417A1 (de) * 1992-05-05 1993-11-11 Huels Chemische Werke Ag Kontinuierliches mehrstufiges Verfahren zur Herstellung von (cyclo)aliphatischen Diisocyanaten
US5491256A (en) * 1992-11-16 1996-02-13 Texaco Inc. Composition of matter for aliphatic-aromatic ureas, biurets, and allophanates as nitric oxide reducing agents in diesel emissions
DK169700B1 (da) * 1993-02-12 1995-01-16 Topsoe Haldor As Fremgangsmåde til fremstilling af organiske isocyanater
DE4342426A1 (de) * 1993-12-13 1995-06-14 Bayer Ag Verfahren zur Herstellung von Diurethanen und ihre Verwendung zur Herstellung von Diisocyanaten
EP0795543B1 (de) * 1996-03-15 2001-10-31 Bayer Ag Verwendung von hochsiedenden Lösemitteln bzw. -gemischen als Wärmetauschmedium für die thermische Spaltung von Carbamidsäureestern
US6160143A (en) * 2000-02-18 2000-12-12 Artisan Industries Inc. Method for the concentration and separation of sterols
ES2245685T3 (es) * 2000-02-29 2006-01-16 Huntsman International Llc Procedimiento para la preparacion de poliisocianatos organicos.
DE10209095A1 (de) 2002-03-01 2003-09-11 Basf Ag Verfahren zur Herstellung von Isocyanaten
DE10215778A1 (de) 2002-04-10 2003-12-18 Basf Ag Reaktor zur thermischen Spaltung von mono- und polyfunktionellen Carbamidsäureestern
DE10338511A1 (de) * 2003-08-22 2005-03-17 Degussa Ag Mehrstufiges Verfahren zur kontinuierlichen Herstellung von cycloaliphatischen Diisocyanaten
DE10338509A1 (de) * 2003-08-22 2005-03-17 Degussa Ag Mehrstufiges Verfahren zur kontinuierlichen Herstellung von cycloaliphatischen Diisocyanaten
DE10338508A1 (de) 2003-08-22 2005-03-17 Degussa Ag Mehrstufiges Verfahren zur kontinuierlichen Herstellung von cycloaliphatischen Diisocyanaten
DE102004022626A1 (de) 2004-05-07 2005-12-15 Degussa Ag Mehrstufiges Verfahren zur kontinuierlichen Herstellung von cycloaliphatischen Diisocyanaten
DE102004026451A1 (de) * 2004-05-29 2005-12-15 Degussa Ag Mehrstufiges Verfahren zur kontinuierlichen Herstellung von cycloaliphatischen Diisocyanaten
DE102004036499A1 (de) * 2004-07-28 2006-03-23 Degussa Ag Mehrstufiges Verfahren zur kontinuierlichen Herstellung von cycloaliphatischen Diisocyanaten
WO2008059953A1 (en) * 2006-11-17 2008-05-22 Asahi Kasei Chemicals Corporation Method for producing isocyanate
DE102006057118A1 (de) * 2006-12-04 2008-06-05 Wacker Chemie Ag Verfahren zur Herstellung von Isocyanatoorganosilanen
TW200844080A (en) 2007-01-11 2008-11-16 Asahi Kasei Chemicals Corp Process for producing isocyanate
US9056819B2 (en) * 2007-03-30 2015-06-16 Asahi Kasei Chemicals Corporation Isocyanate production process using composition containing carbamic acid ester and aromatic hydroxy compound, and composition for transfer and storage of carbamic acid ester
US7977504B2 (en) 2007-11-19 2011-07-12 Asahi Kasei Chemicals Corporation Process for producing isocyanates and aromatic hydroxy compounds
KR20130127553A (ko) 2008-05-15 2013-11-22 아사히 가세이 케미칼즈 가부시키가이샤 탄산디아릴을 이용하는 이소시아네이트의 제조 방법
BRPI0822694B1 (pt) * 2008-05-15 2018-11-27 Asahi Kasei Chemicals Corp processo para produzir um isocianato
EA022171B1 (ru) 2009-08-21 2015-11-30 Асахи Касеи Кемикалз Корпорейшн Способ получения сложного эфира n-замещенной карбаминовой кислоты, способ получения изоцианата с применением такого сложного эфира n-замещенной карбаминовой кислоты и композиция для транспортировки и хранения сложного эфира n-замещенной карбаминовой кислоты, содержащая сложный эфир n-замещенной карбаминовой кислоты и ароматическое гидроксисоединение
DE102009045849B4 (de) * 2009-10-20 2018-03-08 Technische Universität Bergakademie Freiberg Verfahren zur Herstellung von Oligo- und Polysiloxanen
PL2507205T3 (pl) 2009-12-01 2014-12-31 Basf Se Sposób wytwarzania izocyjanianów przez termiczne rozszczepianie karbaminianów
US8835673B2 (en) 2009-12-04 2014-09-16 Basf Se Process for preparing isocyanates
BR112012017877A2 (pt) 2010-01-19 2016-05-03 Basf Se processo para preparar isocianatos
US8680323B2 (en) 2010-01-19 2014-03-25 Basf Se Process for preparing isocyanates by thermal dissociation of carbamates
KR20130089233A (ko) * 2010-06-22 2013-08-09 바스프 에스이 고체 루이스 산 위의 이소시아네이트의 합성을 위한 불균일하게 촉매화된 카바메이트 해리
EP2626345B1 (en) 2010-10-04 2019-01-16 Asahi Kasei Kabushiki Kaisha Separation method and method for producing isocyanate
JP5760077B2 (ja) 2011-02-21 2015-08-05 旭化成ケミカルズ株式会社 カルボニル化合物の製造方法
WO2016156188A1 (de) 2015-03-31 2016-10-06 Basf Se Verfahren zur herstellung von isocyanaten durch carbamatspaltung
CN109503648B (zh) * 2017-09-15 2024-05-28 张家港市国泰华荣化工新材料有限公司 制备3-异氰酸酯基丙基三甲氧基硅烷的装置
JP2019199427A (ja) * 2018-05-15 2019-11-21 旭化成株式会社 イソシアネートの製造方法
JP2019199428A (ja) * 2018-05-15 2019-11-21 旭化成株式会社 イソシアネートの製造方法
JP2019199430A (ja) * 2018-05-15 2019-11-21 旭化成株式会社 イソシアネートの製造方法
JP2019199429A (ja) * 2018-05-15 2019-11-21 旭化成株式会社 イソシアネートの製造方法

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2713591A (en) * 1955-07-19 boc boctanaib
US2409712A (en) * 1944-02-03 1946-10-22 Du Pont Chemical process and products
US2692275A (en) * 1953-01-23 1954-10-19 Rohm & Haas Preparation of 1, 8-diisocyanato-p-menthane
GB763635A (es) * 1953-04-10
US3734941A (en) * 1968-09-06 1973-05-22 American Cyanamid Co Process for converting urethanes to isocyanates
US3870739A (en) * 1973-03-05 1975-03-11 Air Prod & Chem Isocyanates from urethanes
US3962302A (en) * 1974-03-08 1976-06-08 Atlantic Richfield Company Production of isocyanates from esters of carbamic acids (urethanes)
US3919278A (en) * 1974-06-13 1975-11-11 Atlantic Richfield Co Production of isocyanates from lower alkyl esters of mononuclear aromatic carbamic acids
US3919279A (en) * 1974-06-26 1975-11-11 Atlantic Richfield Co Catalytic production of isocyanates from esters of carbamic acids
US3919280A (en) * 1974-07-05 1975-11-11 Atlantic Richfield Co Recovery of solvents employed in the production of isocyanates from esters of carbamic acids
JPS5219624A (en) * 1975-08-07 1977-02-15 Mitsui Toatsu Chem Inc Process for preparation of isocyanates
JPS5439002A (en) * 1977-08-30 1979-03-24 Mitsubishi Chem Ind Ltd Preparation of isocyanates
JPS5488222A (en) * 1977-12-20 1979-07-13 Mitsubishi Chem Ind Ltd Preparation of isocyanate from carbamate
JPS6052693B2 (ja) * 1977-12-22 1985-11-20 三菱化学株式会社 カルバミン酸エステルからのイソシアネ−トの製造法
US4294774A (en) * 1980-11-14 1981-10-13 The Dow Chemical Company Preparation of organic isocyanates
DE3047898A1 (de) * 1980-12-19 1982-07-15 Bayer Ag, 5090 Leverkusen Verfahren zur kontinuierlichen thermischen spaltung von carbamidsaeureestern und die verwendung von hierbei anfallenden isocyanate und carbamidsaeureester aufweisenden gemischen zur herstellung von isocyanaten

Also Published As

Publication number Publication date
DE3215591A1 (de) 1983-10-27
JPH0211581B2 (es) 1990-03-14
BR8302136A (pt) 1983-12-27
CA1216588A (en) 1987-01-13
EP0092738A1 (de) 1983-11-02
DE3360430D1 (en) 1985-08-29
US4692550A (en) 1987-09-08
JPS58194849A (ja) 1983-11-12
ES521887A0 (es) 1984-01-16
EP0092738B1 (de) 1985-07-24

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 20010402