FR2320288A1 - Procede pour la preparation d'isocyanates aromatiques - Google Patents

Procede pour la preparation d'isocyanates aromatiques

Info

Publication number
FR2320288A1
FR2320288A1 FR7624337A FR7624337A FR2320288A1 FR 2320288 A1 FR2320288 A1 FR 2320288A1 FR 7624337 A FR7624337 A FR 7624337A FR 7624337 A FR7624337 A FR 7624337A FR 2320288 A1 FR2320288 A1 FR 2320288A1
Authority
FR
France
Prior art keywords
aromatic
metal
formula
reduced pressure
under reduced
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.)
Granted
Application number
FR7624337A
Other languages
English (en)
French (fr)
Other versions
FR2320288B1 (OSRAM
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.)
Mitsui Toatsu Chemicals Inc
Original Assignee
Mitsui Toatsu Chemicals Inc
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 Mitsui Toatsu Chemicals Inc filed Critical Mitsui Toatsu Chemicals Inc
Publication of FR2320288A1 publication Critical patent/FR2320288A1/fr
Application granted granted Critical
Publication of FR2320288B1 publication Critical patent/FR2320288B1/fr
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)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
FR7624337A 1975-08-07 1976-08-09 Procede pour la preparation d'isocyanates aromatiques Granted FR2320288A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50096056A JPS5219624A (en) 1975-08-07 1975-08-07 Process for preparation of isocyanates

Publications (2)

Publication Number Publication Date
FR2320288A1 true FR2320288A1 (fr) 1977-03-04
FR2320288B1 FR2320288B1 (OSRAM) 1982-07-16

Family

ID=14154777

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7624337A Granted FR2320288A1 (fr) 1975-08-07 1976-08-09 Procede pour la preparation d'isocyanates aromatiques

Country Status (9)

Country Link
US (1) US4081472A (OSRAM)
JP (1) JPS5219624A (OSRAM)
BE (1) BE844967A (OSRAM)
CA (1) CA1082728A (OSRAM)
DE (1) DE2635490C3 (OSRAM)
FR (1) FR2320288A1 (OSRAM)
GB (1) GB1513193A (OSRAM)
IT (1) IT1065802B (OSRAM)
NL (1) NL186572C (OSRAM)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0054817A3 (en) * 1980-12-19 1982-08-18 Bayer Ag Process for the continuous thermal decomposition of esters of carbamic acids and use of mixtures of esters of carbamic acids and isocyanates obtained by this process for the preparation of isocyanates
EP0078005A1 (de) * 1981-10-28 1983-05-04 BASF Aktiengesellschaft Verfahren zur Herstellung von Isocyanaten durch thermische Spaltung von Urethanen

Families Citing this family (58)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5488222A (en) * 1977-12-20 1979-07-13 Mitsubishi Chem Ind Ltd Preparation of isocyanate from carbamate
DE2756928A1 (de) * 1977-12-21 1979-07-05 Bayer Ag Verfahren zur kontinuierlichen herstellung von monoisocyanaten
DE2904917A1 (de) * 1979-02-09 1980-08-21 Basf Ag Verfahren zur herstellung von methylenbis-(4-phenylcarbaminsaeureester)
DE2917493A1 (de) * 1979-04-30 1980-11-13 Basf Ag Verfahren zur herstellung von aliphatischen und cycloaliphatischen di- und polyurethanen
US4851565A (en) * 1979-04-30 1989-07-25 Basf Aktiengesellschaft Catalyzed process for the preparation of an aliphatic, cycloaliphatic, arylaliphatic or aliphatic-cycloaliphatic di- or polyurethane
DE2917569A1 (de) * 1979-04-30 1980-11-13 Basf Ag Verfahren zur herstellung von aromatischen di- und polyurethanen
DE2942543A1 (de) * 1979-10-20 1981-05-07 Basf Ag, 6700 Ludwigshafen Verfahren zur herstellung von arylisocyanaten durch thermische spaltung von arylurethanen
DE2942503A1 (de) * 1979-10-20 1981-05-07 Basf Ag, 6700 Ludwigshafen Verfahren zur herstellung von aromatischen di- und/oder polyisocyanaten
JPS5679657A (en) * 1979-12-04 1981-06-30 Mitsui Toatsu Chem Inc Novel preparation of polyisocyanate
US4321402A (en) * 1980-08-18 1982-03-23 Exxon Research & Engineering Co. Carbamate process
US4294774A (en) * 1980-11-14 1981-10-13 The Dow Chemical Company Preparation of organic isocyanates
JPS57158746A (en) * 1981-03-25 1982-09-30 Asahi Chem Ind Co Ltd Preparation of isocyanate
JPS57158748A (en) * 1981-03-26 1982-09-30 Asahi Chem Ind Co Ltd Preparation of isocyanate
JPS57158747A (en) * 1981-03-26 1982-09-30 Asahi Chem Ind Co Ltd Preparation of isocyanate
US4487713A (en) * 1981-06-26 1984-12-11 Exxon Research & Engineering Co. Production of isocyanates from esters of aromatic carbamic acids (urethanes)
DE3215591A1 (de) * 1982-04-27 1983-10-27 Bayer Ag, 5090 Leverkusen Verfahren zur kontinuierlichen thermischen spaltung von carbamidsaeureestern
DE3339300A1 (de) * 1983-10-29 1985-05-09 Basf Ag, 6700 Ludwigshafen Verfahren zur herstellung von isocyanaten durch thermische spaltung von urethanen
US5914428A (en) * 1987-01-13 1999-06-22 Daicel Chemical Industries, Ltd. Process for preparation of isocyanate compounds
US5773643A (en) * 1987-01-13 1998-06-30 Daicel Chemical Industries, Ltd. Process for preparation of isocyanate compounds
JPS63211256A (ja) * 1988-02-12 1988-09-02 Asahi Chem Ind Co Ltd イソシアナート類の製造方法
DE3915181A1 (de) * 1989-05-10 1990-11-15 Bayer Ag Verfahren zur herstellung von polyisocyanaten
US5220069A (en) * 1990-09-20 1993-06-15 Union Carbide Chemicals & Plastics Technology Corporation Processes for the preparation of carbamates
JPH04221356A (ja) * 1990-12-20 1992-08-11 Mitsubishi Gas Chem Co Inc キシリレンジイソシアネートの製造方法
DE4124671A1 (de) * 1991-07-25 1993-01-28 Basf Ag Reaktor und verfahren zur thermischen spaltung von carbamidsaeureestern
DE4137428A1 (de) * 1991-11-14 1993-05-19 Bayer Ag Verfahren zur herstellung von polyisocyanaten
DE4141402A1 (de) * 1991-12-16 1993-06-17 Bayer Ag Verfahren zur herstellung von hochreinen aromatischen di- und/oder polyurethanen
US5233010A (en) * 1992-10-15 1993-08-03 Monsanto Company Process for preparing isocyanate and carbamate ester products
JP3083039B2 (ja) * 1994-03-18 2000-09-04 三菱瓦斯化学株式会社 イソシアネート類の製造方法
EP0680994A1 (en) * 1994-05-02 1995-11-08 Nippon Paint Co., Ltd. Re-Crosslinkable composition and method for recycling using the same
GB0017968D0 (en) * 2000-07-22 2000-09-13 Epichem Ltd An improved process and apparatus for the isolation of pure,or substantially pure,organometallic compounds
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
DE10338508A1 (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
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
US7700250B2 (en) * 2006-08-30 2010-04-20 Xerox Corporation Titanyl phthalocyanine photoconductors
TWI361179B (en) * 2006-11-17 2012-04-01 Asahi Kasei Chemicals Corp A process for producing isocyanates
TW200844080A (en) 2007-01-11 2008-11-16 Asahi Kasei Chemicals Corp Process for producing isocyanate
CN101652344B (zh) 2007-03-30 2014-06-04 旭化成化学株式会社 使用含有氨基甲酸酯和芳香族羟基化合物的组合物制造异氰酸酯的方法、以及氨基甲酸酯输送用和储藏用组合物
JP5313164B2 (ja) 2007-11-19 2013-10-09 旭化成ケミカルズ株式会社 イソシアネートおよび芳香族ヒドロキシ化合物の製造方法
US8895774B2 (en) * 2008-05-15 2014-11-25 Asahi Kasei Chemicals Corporation Process for producing isocyanates using diaryl carbonate
KR20130127550A (ko) 2008-05-15 2013-11-22 아사히 가세이 케미칼즈 가부시키가이샤 이소시아네이트의 제조 방법
DE102008002002A1 (de) 2008-05-27 2009-12-03 Evonik Degussa Gmbh Chlor armes mehrstufiges Verfahren zur Herstellung von cycloaliphatischen Diisocyanaten
US9150502B2 (en) 2009-03-26 2015-10-06 Mitsui Chemicals, Inc. Urethane compound and method for producing the same, and isocyanate and method for producing the same
KR101332485B1 (ko) 2009-08-21 2013-11-26 아사히 가세이 케미칼즈 가부시키가이샤 Ｎ-치환 카르밤산 에스테르의 제조 방법 및 상기 ｎ-치환 카르밤산 에스테르를 사용하는 이소시아네이트의 제조 방법
JP5643517B2 (ja) * 2010-02-04 2014-12-17 三井化学株式会社 触媒処理方法
CN101792403B (zh) * 2010-03-22 2013-02-13 哈尔滨理工大学 微波辅助合成4，4’-二苯甲烷二异氰酸酯的方法
WO2011161029A1 (de) * 2010-06-22 2011-12-29 Basf Se Heterogen katalysierte carbamatspaltung zur synthese von isocyanaten an festen lewis-säuren
EP2679575B1 (en) 2011-02-21 2019-04-10 Asahi Kasei Kabushiki Kaisha Process for producing carbonyl compounds
CN102896103B (zh) * 2011-07-25 2014-12-03 中国石油天然气股份有限公司 一种清洗氨基甲酸酯热分解反应器结焦的方法
KR101348229B1 (ko) 2011-12-14 2014-01-08 경희대학교 산학협력단 지방족 디이소시아네이트의 제조방법
WO2018212206A1 (ja) 2017-05-15 2018-11-22 旭化成株式会社 イソシアネートの製造方法
EP3450424A1 (de) * 2017-09-04 2019-03-06 Covestro Deutschland AG Verfahren zur herstellung von isocyanaten
CN110467546B (zh) * 2018-05-10 2021-03-19 中国科学院过程工程研究所 一种制备间苯二亚甲基二异氰酸酯的方法
CN110423208A (zh) * 2019-08-15 2019-11-08 中国科学院过程工程研究所 一种二苯甲烷二异氰酸酯的制备方法
WO2025013551A1 (ja) * 2023-07-07 2025-01-16 国立研究開発法人産業技術総合研究所 イソシアネートの製造方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2409712A (en) * 1944-02-03 1946-10-22 Du Pont Chemical process and products
DE1022222B (de) * 1953-01-23 1958-01-09 Rohm & Haas Verfahren zur Herstellung von 1,8-Diisocyan-p-menthan
US3477933A (en) * 1966-06-06 1969-11-11 Stauffer Chemical Co Process for preparing n-monosubstituted carbamic acid esters
FR2017496A1 (OSRAM) * 1968-09-06 1970-05-22 American Cyanamid Co
FR2228056A1 (OSRAM) * 1973-05-04 1974-11-29 Atlantic Richfield Co
US3919279A (en) * 1974-06-26 1975-11-11 Atlantic Richfield Co Catalytic production of isocyanates from esters of carbamic acids

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3962302A (en) * 1974-03-08 1976-06-08 Atlantic Richfield Company Production of isocyanates from esters of carbamic acids (urethanes)

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2409712A (en) * 1944-02-03 1946-10-22 Du Pont Chemical process and products
DE1022222B (de) * 1953-01-23 1958-01-09 Rohm & Haas Verfahren zur Herstellung von 1,8-Diisocyan-p-menthan
US3477933A (en) * 1966-06-06 1969-11-11 Stauffer Chemical Co Process for preparing n-monosubstituted carbamic acid esters
FR2017496A1 (OSRAM) * 1968-09-06 1970-05-22 American Cyanamid Co
FR2228056A1 (OSRAM) * 1973-05-04 1974-11-29 Atlantic Richfield Co
US3919279A (en) * 1974-06-26 1975-11-11 Atlantic Richfield Co Catalytic production of isocyanates from esters of carbamic acids

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0054817A3 (en) * 1980-12-19 1982-08-18 Bayer Ag Process for the continuous thermal decomposition of esters of carbamic acids and use of mixtures of esters of carbamic acids and isocyanates obtained by this process for the preparation of isocyanates
EP0078005A1 (de) * 1981-10-28 1983-05-04 BASF Aktiengesellschaft Verfahren zur Herstellung von Isocyanaten durch thermische Spaltung von Urethanen

Also Published As

Publication number Publication date
CA1082728A (en) 1980-07-29
IT1065802B (it) 1985-03-04
JPS5219624A (en) 1977-02-15
NL7608745A (nl) 1977-02-09
JPS5745736B2 (OSRAM) 1982-09-29
DE2635490B2 (de) 1980-10-16
DE2635490A1 (de) 1977-02-24
NL186572B (nl) 1990-08-01
NL186572C (nl) 1991-01-02
GB1513193A (en) 1978-06-07
US4081472A (en) 1978-03-28
FR2320288B1 (OSRAM) 1982-07-16
BE844967A (fr) 1977-02-07
DE2635490C3 (de) 1981-09-17

Similar Documents

Publication Publication Date Title
FR2320288B1 (OSRAM)
ES453393A1 (es) Procedimiento para la preparacion de poliisocianatos con grupos isocianurato.
ES482987A1 (es) Un procedimiento para la preparacion de dicarbamatos de di- fenilmetano y carbamatos de polimetilenpolifenilo
FR2421884A1 (fr) Procede de preparation de maleimides substitues a l'azote
Bottini et al. The Products from the Reaction of N-(2-Bromoallyl)-ethylamine with Sodium Amide1
KR840006206A (ko) 이소퀴놀린 유도체의 제조방법
ES2066065T3 (es) Procedimiento para la obtencion de poliisocianatos que muestran grupos uretdion.
RO93742B (ro) Procedeu pentru prepararea unor fenilcarbamati cu proprietati erbicide
BR8700114A (pt) Processo para a obtencao de compostos organicos,compostos obtidos e utilizacao
GB1438125A (en) Preparation of a-aminoalcohols
FR2371404A1 (fr) Procede de preparation de composes aromatiques fluores
FR2394509A1 (fr) Procede de dimerisation
JPS6475452A (en) Fluorodinitrobenzene derivative and production thereof
ES8500256A1 (es) Un procedimiento para preparar s-2-acetil-7-2,3-epoxipropoxi benzofurano.
KR860008128A (ko) 메틸 카바메이트의 제조방법
FR2444057A1 (fr) Procede de preparation de polymethylene polyphenyl polycarbamates
US3726911A (en) N-substituted (5,8-dimethyl-5,6,7,8-tetrahydro-1-naphthyl) carbamates
FR2366281A1 (fr) Nouveaux esters de o-pyrazolyle d'acide n,n-dimethyl-carbamique, leur procede de preparation et leur application comme insecticides
RU94011972A (ru) Способ получения 2,5- n,n' -(диметиламинометил)-1,4-гидрохинона
US3214412A (en) 1, 2-bis(dialkylamino)-1, 2-diisocyanato-ethylenes and n, n'-bis(alpha-fluorodialkyl-aminomethyl) uretidine diones
US4263220A (en) Alkylene dicyanates
JPS55167273A (en) Novel bis(n-carboalkoxy-anilino)methane and its preparation
ES8304927A1 (es) "un procedimiento para preparar al menos un isocianato aromatico a partir de al menos un carbamato aromatico".
Sheppard et al. Aziridine analogs of some synthetic pyrethroids
SU588227A1 (ru) Способ получени димерных комплексов с производными -этилен-бис (салицилал)имина

Legal Events

Date Code Title Description
ST Notification of lapse