FR2320288A1 - Procede pour la preparation d'isocyanates aromatiques - Google Patents
Procede pour la preparation d'isocyanates aromatiquesInfo
- 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
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)
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 (fr) | 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 (fr) |
JP (1) | JPS5219624A (fr) |
BE (1) | BE844967A (fr) |
CA (1) | CA1082728A (fr) |
DE (1) | DE2635490C3 (fr) |
FR (1) | FR2320288A1 (fr) |
GB (1) | GB1513193A (fr) |
IT (1) | IT1065802B (fr) |
NL (1) | NL186572C (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0054817A2 (fr) * | 1980-12-19 | 1982-06-30 | Bayer Ag | Procédé de décomposition thermique en continu d'esters d'acides carbamiques et l'utilisation de mélanges d'esters d'acides carbamiques et d'isocyanates obtenus dans ce procédé pour la préparation d'isocyanates |
EP0078005A1 (fr) * | 1981-10-28 | 1983-05-04 | BASF Aktiengesellschaft | Méthode de préparation isocyanates par pyrolyse d'urétanes |
Families Citing this family (57)
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) |
DE2917569A1 (de) * | 1979-04-30 | 1980-11-13 | Basf Ag | Verfahren zur herstellung von aromatischen 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 |
DE2917493A1 (de) * | 1979-04-30 | 1980-11-13 | Basf Ag | Verfahren zur herstellung von aliphatischen und cycloaliphatischen 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 |
JPS57158747A (en) * | 1981-03-26 | 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 |
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 |
US5773643A (en) * | 1987-01-13 | 1998-06-30 | Daicel Chemical Industries, Ltd. | Process for preparation of isocyanate compounds |
US5914428A (en) * | 1987-01-13 | 1999-06-22 | 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 (fr) * | 1994-05-02 | 1995-11-08 | Nippon Paint Co., Ltd. | Composition à nouveau réticulable et procédé pour le recyclage utilisant celle-ci |
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 |
KR101002385B1 (ko) * | 2006-11-17 | 2010-12-20 | 아사히 가세이 케미칼즈 가부시키가이샤 | 이소시아네이트의 제조 방법 |
TW200844080A (en) | 2007-01-11 | 2008-11-16 | Asahi Kasei Chemicals Corp | Process for producing isocyanate |
JP4958971B2 (ja) | 2007-03-30 | 2012-06-20 | 旭化成ケミカルズ株式会社 | カルバミン酸エステルおよび芳香族ヒドロキシ化合物を含む組成物を用いるイソシアネートの製造方法、ならびにカルバミン酸エステル移送用および貯蔵用組成物 |
CN101868445B (zh) | 2007-11-19 | 2014-06-18 | 旭化成化学株式会社 | 异氰酸酯和芳香族羟基化合物的制造方法 |
KR101363232B1 (ko) | 2008-05-15 | 2014-02-12 | 아사히 가세이 케미칼즈 가부시키가이샤 | 탄산디아릴을 이용하는 이소시아네이트의 제조 방법 |
CA2721359C (fr) | 2008-05-15 | 2014-05-06 | Asahi Kasei Chemicals Corporation | Procede de production d'isocyanate |
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 |
ES2623463T3 (es) | 2009-08-21 | 2017-07-11 | Asahi Kasei Kabushiki Kaisha | Procedimiento para producir un éster del ácido carbámico N sustituido, procedimiento para producir isocianato utilizando éster del ácido carbámico N sustituido y composición para transferir y almacenar éster del ácido carbámico N sustituido que contiene un éster del ácido carbámico N sustituido y compuesto hidroxilado aromático |
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 |
EP2585433A1 (fr) * | 2010-06-22 | 2013-05-01 | Basf Se | Dissociation de carbamate en présence d'un catalyse hétérogène pour la synthèse d'isocyanates sur des acides de lewis solides |
CN103097348B (zh) | 2011-02-21 | 2015-10-14 | 旭化成化学株式会社 | 羰基化合物的制造方法 |
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 |
CN110494416A (zh) | 2017-05-15 | 2019-11-22 | 旭化成株式会社 | 异氰酸酯的制造方法 |
EP3450424A1 (fr) * | 2017-09-04 | 2019-03-06 | Covestro Deutschland AG | Procédé de fabrication d'isocyanates |
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 |
Citations (6)
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 (fr) * | 1968-09-06 | 1970-05-22 | American Cyanamid Co | |
FR2228056A1 (fr) * | 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)
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) |
-
1975
- 1975-08-07 JP JP50096056A patent/JPS5219624A/ja active Granted
-
1976
- 1976-08-05 US US05/711,823 patent/US4081472A/en not_active Expired - Lifetime
- 1976-08-05 CA CA258,489A patent/CA1082728A/fr not_active Expired
- 1976-08-05 GB GB32628/76A patent/GB1513193A/en not_active Expired
- 1976-08-06 IT IT26138/76A patent/IT1065802B/it active
- 1976-08-06 DE DE2635490A patent/DE2635490C3/de not_active Expired
- 1976-08-06 BE BE169625A patent/BE844967A/fr not_active IP Right Cessation
- 1976-08-06 NL NLAANVRAGE7608745,A patent/NL186572C/xx not_active IP Right Cessation
- 1976-08-09 FR FR7624337A patent/FR2320288A1/fr active Granted
Patent Citations (6)
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 (fr) * | 1968-09-06 | 1970-05-22 | American Cyanamid Co | |
FR2228056A1 (fr) * | 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 (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0054817A2 (fr) * | 1980-12-19 | 1982-06-30 | Bayer Ag | Procédé de décomposition thermique en continu d'esters d'acides carbamiques et l'utilisation de mélanges d'esters d'acides carbamiques et d'isocyanates obtenus dans ce procédé pour la préparation d'isocyanates |
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 (fr) * | 1981-10-28 | 1983-05-04 | BASF Aktiengesellschaft | Méthode de préparation isocyanates par pyrolyse d'urétanes |
Also Published As
Publication number | Publication date |
---|---|
BE844967A (fr) | 1977-02-07 |
DE2635490C3 (de) | 1981-09-17 |
NL7608745A (nl) | 1977-02-09 |
DE2635490B2 (de) | 1980-10-16 |
JPS5219624A (en) | 1977-02-15 |
DE2635490A1 (de) | 1977-02-24 |
NL186572B (nl) | 1990-08-01 |
NL186572C (nl) | 1991-01-02 |
CA1082728A (fr) | 1980-07-29 |
FR2320288B1 (fr) | 1982-07-16 |
IT1065802B (it) | 1985-03-04 |
GB1513193A (en) | 1978-06-07 |
US4081472A (en) | 1978-03-28 |
JPS5745736B2 (fr) | 1982-09-29 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
FR2320288A1 (fr) | Procede pour la preparation d'isocyanates aromatiques | |
FR2362171A1 (fr) | Procede de preparation de polyurethanne-urees | |
Bottini et al. | The Products from the Reaction of N-(2-Bromoallyl)-ethylamine with Sodium Amide1 | |
GB943729A (en) | Improvements in or relating to the preparation of arylchloroformates by phosgenation | |
ES2066065T3 (es) | Procedimiento para la obtencion de poliisocianatos que muestran grupos uretdion. | |
BR9001978A (pt) | Processo para a preparacao de oximas alifaticas e cicloalifaticas por oxidacao da amina primaria alifatica ou cicloalifatica saturada correspondente | |
ES476180A1 (es) | Procedimiento para la obtencion continua de monoisocianatos. | |
RO93742B (ro) | Procedeu pentru prepararea unor fenilcarbamati cu proprietati erbicide | |
CA1192570A (fr) | Methode de preparation d'urethanes | |
FR2408590A1 (fr) | Procede de preparation de peroxydes | |
GB1290656A (fr) | ||
FR2394509A1 (fr) | Procede de dimerisation | |
ES483249A1 (es) | Procedimiento para la obtencion de diciclopentilen(2,2'-bis (4-alquil-6-t-butilfenoles). | |
FR2385712A1 (fr) | Procede de preparation d'esters cycliques d'acide undecanedioique | |
FR2371404A1 (fr) | Procede de preparation de composes aromatiques fluores | |
KR860008128A (ko) | 메틸 카바메이트의 제조방법 | |
US3726911A (en) | N-substituted (5,8-dimethyl-5,6,7,8-tetrahydro-1-naphthyl) carbamates | |
FR2444057A1 (fr) | Procede de preparation de polymethylene polyphenyl polycarbamates | |
UST994004I4 (en) | Process for the preparation of diphenylmethane dicarbamates and polymethylene polyphenyl carbamates using solid acid catalysts | |
JPS55145605A (en) | Agent for increasing yield of "shiitake" mushroom | |
JPS55167273A (en) | Novel bis(n-carboalkoxy-anilino)methane and its preparation | |
Sheppard et al. | Aziridine analogs of some synthetic pyrethroids | |
JPS5412358A (en) | Preparation of aromatic polyamines | |
FR2380254A1 (fr) | Procede perfectionne pour la preparation des isocyanates d'alkyle | |
FR2378771A1 (fr) | Nouvelles 4,5-dihydroxyimidazolidine-2-thiones substituees, leur procede de preparation et leur application comme ectoparasiticides |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |