ES8301900A1 - Procedimiento para la obtencion de poliisocianatos. - Google Patents

Procedimiento para la obtencion de poliisocianatos.

Info

Publication number
ES8301900A1
ES8301900A1 ES510255A ES510255A ES8301900A1 ES 8301900 A1 ES8301900 A1 ES 8301900A1 ES 510255 A ES510255 A ES 510255A ES 510255 A ES510255 A ES 510255A ES 8301900 A1 ES8301900 A1 ES 8301900A1
Authority
ES
Spain
Prior art keywords
splitting
polyisocyanates
alcohol
isocyanate
chlorides
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
ES510255A
Other languages
English (en)
Other versions
ES510255A0 (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 ES8301900A1 publication Critical patent/ES8301900A1/es
Publication of ES510255A0 publication Critical patent/ES510255A0/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

Abstract

PROCEDIMIENTO PARA LA OBTENCION DE POLIISOCIANATOS O MEZCLAS DE LOS MISMOS, DE FORMULA R(NCO)<009>, EN LA QUE R PUEDE SER VARIOS TIPOS DE RADICALES; Y N ES UN NUMERO ENTERO SUPERIOR A 1. CONSISTE EN LA REACCION DE DISOCIACION TERMICA DE CARBAMATOS O MEZCLAS DE CARBAMATOS DE FORMULA R(NH<024>CO<024>O<024>R )<009>, EN LA QUE R ES UN RADICAL ALIFATICO, CICLOALIFATICO O ARALIFATICO; Y R Y N TIENEN EL MISMO SIGNIFICADO QUE EN LA FORMULA ANTERIOR. LA REACCION SE LLEVA A CABO EN DISOLVENTES INERTES, EN PRESENCIA DE AGENTES AUXILIARES, TALES COMO CLORURO DE NITROGENO, CLORUROS DE ACIDO ORGANICOS, COMPUESTOS ALQUILIZANTES O CLORUROS DE ORGANOESTAÑO (IV), A UNA TEMPERATURA ENTRE 150<025>C Y 350<025>C.
ES510255A 1981-03-10 1982-03-09 Procedimiento para la obtencion de poliisocianatos. Granted ES510255A0 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19813108990 DE3108990A1 (de) 1981-03-10 1981-03-10 Verfahren zur herstellung von polyisocyanaten

Publications (2)

Publication Number Publication Date
ES8301900A1 true ES8301900A1 (es) 1983-01-16
ES510255A0 ES510255A0 (es) 1983-01-16

Family

ID=6126784

Family Applications (1)

Application Number Title Priority Date Filing Date
ES510255A Granted ES510255A0 (es) 1981-03-10 1982-03-09 Procedimiento para la obtencion de poliisocianatos.

Country Status (7)

Country Link
US (1) US4388246A (es)
EP (1) EP0061013B1 (es)
JP (1) JPS57159752A (es)
BR (1) BR8201250A (es)
CA (1) CA1178968A (es)
DE (2) DE3108990A1 (es)
ES (1) ES510255A0 (es)

Families Citing this family (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0100047B1 (de) * 1982-07-24 1986-02-12 BASF Aktiengesellschaft Verfahren zur Herstellung von Hexamethylen-diisocyanat-1,6 und/oder isomeren Diisocyanaten mit 6 Kohlenstoffatomen im Alkylenrest
DE3314788A1 (de) * 1983-04-23 1984-10-25 Basf Ag, 6700 Ludwigshafen Mehrstufenverfahren zur herstellung von hexamethylendiisocyanat-1,6 und/oder isomeren aliphatischen diisocyanaten mit 6 kohlenstoffatomen im alkylenrest
DE3314790A1 (de) * 1983-04-23 1984-10-25 Basf Ag, 6700 Ludwigshafen Mehrstufenverfahren zur herstellung von 3-isocyanatomethyl-3,5,5-trimethyl-cyclohexylisocyanat
DE3325185A1 (de) * 1983-07-13 1985-01-24 Basf Ag, 6700 Ludwigshafen In 3-stellung heterocyclische oder 3-dialkylamino-2,2-dialkyl-propylisocyanate und verfahren zur herstellung von in 3-stellung heterocyclischen oder 3-dialkylamino-2,2-dialkylpropylisocyanaten
US4587056A (en) * 1984-04-26 1986-05-06 Asahi Kasei Kogyo Kabushiki Kaisha Process for producing an aliphatic isocyanate
US4572804A (en) * 1984-12-17 1986-02-25 The Dow Chemical Company Preparation of unsaturated isocyanates
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
DE3828033A1 (de) * 1988-08-18 1990-03-08 Huels Chemische Werke Ag Kreislaufverfahren zur herstellung von (cyclo)aliphatischen diisocyanaten
DE3915181A1 (de) * 1989-05-10 1990-11-15 Bayer Ag Verfahren zur herstellung von polyisocyanaten
DE3915183A1 (de) * 1989-05-10 1990-11-15 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
DE4342426A1 (de) * 1993-12-13 1995-06-14 Bayer Ag Verfahren zur Herstellung von Diurethanen und ihre Verwendung zur Herstellung von Diisocyanaten
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
EP0795544B1 (de) * 1996-03-15 2001-10-31 Bayer Ag Verfahren zur thermischen Spaltung von Carbamidsäureestern
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
DE10338511A1 (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
US8053595B2 (en) * 2006-11-17 2011-11-08 Asahi Kasei Chemicals Corporation Process for producing isocyanates
TW200844080A (en) * 2007-01-11 2008-11-16 Asahi Kasei Chemicals Corp Process for producing isocyanate
EP2147909B1 (en) 2007-03-30 2016-12-14 Asahi Kasei Kabushiki Kaisha Method for production of isocyanate using composition comprising carbamic acid ester and aromatic hydroxy compound, and composition for transport or storage of carbamic acid ester
ES2551731T3 (es) 2007-11-19 2015-11-23 Asahi Kasei Chemicals Corporation Procedimiento para la fabricación de isocianatos y compuestos hidroxi aromáticos
RU2483058C2 (ru) 2008-05-15 2013-05-27 Асахи Касеи Кемикалз Корпорейшн Способ получения изоцианата
EP2275405B1 (en) * 2008-05-15 2019-04-24 Asahi Kasei Kabushiki Kaisha Process for producing isocyanate using diaryl carbonate
DE102008002002A1 (de) 2008-05-27 2009-12-03 Evonik Degussa Gmbh Chlor armes mehrstufiges Verfahren zur Herstellung von cycloaliphatischen Diisocyanaten
CN101962348A (zh) * 2009-07-23 2011-02-02 中国科学院兰州化学物理研究所 一种液相热裂解制备异氰酸酯的方法
CA2707336C (en) 2009-08-21 2013-07-23 Asahi Kasei Chemicals Corporation N-substituted carbamic acid ester production method, isocyanate production method using such n-substituted carbamic acid ester, and composition for transfer and storage of n-substituted carbamic acid ester comprising n-substituted carbamic acid ester and aromatic hydroxy compound
TWI504584B (zh) 2011-02-21 2015-10-21 Asahi Kasei Chemicals Corp 羰基化合物之製造方法
KR101348229B1 (ko) 2011-12-14 2014-01-08 경희대학교 산학협력단 지방족 디이소시아네이트의 제조방법
KR102618935B1 (ko) 2015-01-30 2023-12-27 바스프 에스이 낮은 부산물 함량의 폴리페닐렌 폴리메틸렌 폴리이소시아네이트

Family Cites Families (10)

* 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
US2437867A (en) * 1946-06-01 1948-03-16 Du Pont Organic isocyanates
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
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
DE2625075A1 (de) * 1976-06-04 1977-12-22 Basf Ag Verfahren zur herstellung von carbamidsaeurechloriden und isocyanaten

Also Published As

Publication number Publication date
EP0061013B1 (de) 1984-06-27
CA1178968A (en) 1984-12-04
JPH0229073B2 (es) 1990-06-27
DE3260284D1 (en) 1984-08-02
US4388246A (en) 1983-06-14
DE3108990A1 (de) 1982-09-23
BR8201250A (pt) 1983-01-18
ES510255A0 (es) 1983-01-16
EP0061013A1 (de) 1982-09-29
JPS57159752A (en) 1982-10-01

Similar Documents

Publication Publication Date Title
ES8301900A1 (es) Procedimiento para la obtencion de poliisocianatos.
ES462357A1 (es) Procedimiento de obtencion de poliisocianatos de estructura isocianurato.
ES453393A1 (es) Procedimiento para la preparacion de poliisocianatos con grupos isocianurato.
GB1503688A (en) Recovery of solvents employed in the production of isocyanates from esters of carbamic acids(urethanes)
ATE14721T1 (de) Verfahren zur herstellung von isocyanaten durch thermische spaltung von urethanen.
ES483389A1 (es) Procedimiento para la preparacion de monoisocianatos o poli-isocianatos organicos
KR960022451A (ko) 유기 이소시아네이트의 연속 제조 방법
CA1160217A (en) Process for the preparation of active-type vitamin d.sub.3 compounds
ATE61577T1 (de) Fluorierte abkoemmlinge von vitamin-d3 und verfahren zu deren herstellung.
ES482237A1 (es) Un procedimiento para la preparacion de un poliuretano.
EP0266661A3 (en) Preparation of cyclohexyl mono- and diurethanes and isocyanates derived therefrom by addition of methylcarbamates to limonene, process and compositions
IE821314L (en) Preparing 2-(2-thienyl) and 2-(3-thienyl)-ethylamines
ES451621A1 (es) Procedimiento para disociar poliuretanos celulares y no ce- lulares.
JPS5695173A (en) Preparation of 5-fluorocytosine
DE59004015D1 (de) Verfahren zur Herstellung von Polyurethanpulvern.
ES483249A1 (es) Procedimiento para la obtencion de diciclopentilen(2,2&#39;-bis (4-alquil-6-t-butilfenoles).
US3551490A (en) Method for preparing tetramethyl-guanidine
FR2360564A1 (fr) Procede de preparation de mono-isocyanates aliphatiques a partir des chlorures d&#39;acides carbamiques correspondants
ES8406407A1 (es) Procedimiento para la preparacion de 1,2-dicloroetano
SU1811161A1 (ru) Способ получения органических изоцианатов
JPS5686146A (en) Preparation of lower aliphatic isocyanate
Furukawa et al. Intramolecular Trapping of the Nitrene Generated by Photolysis of S, S-diphenyl N-acylsulfilimine
HUT54618A (en) Process for producing amine-substituted terciary carbinol derivatives
SU1226809A1 (ru) Способ получения ортозамещенных бензолсульфонилизоцианатов
JPS5571623A (en) Production of pyrosulfite