ES8305311A1 - Procedimiento para la obtencion de poliisocianatos. - Google Patents

Procedimiento para la obtencion de poliisocianatos.

Info

Publication number
ES8305311A1
ES8305311A1 ES514300A ES514300A ES8305311A1 ES 8305311 A1 ES8305311 A1 ES 8305311A1 ES 514300 A ES514300 A ES 514300A ES 514300 A ES514300 A ES 514300A ES 8305311 A1 ES8305311 A1 ES 8305311A1
Authority
ES
Spain
Prior art keywords
solvent
urethanes
ureas
treated
reaction mixture
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
ES514300A
Other languages
English (en)
Other versions
ES514300A0 (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 ES514300A0 publication Critical patent/ES514300A0/es
Publication of ES8305311A1 publication Critical patent/ES8305311A1/es
Expired 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
    • C07C263/10—Preparation of derivatives of isocyanic acid by reaction of amines with carbonyl halides, e.g. with phosgene

Landscapes

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

Abstract

PROCEDIMIENTO PARA LA OBTENCION DE POLIISOCIANATOS. CONSISTE EN LA REACCION DE DISOLUCIONES DE POLIAMINAS CON FOSGENO EN UN DISOLVENTE INERTE; SEPARACION DEL FOSGENO EN EXCESO Y DEL CLORURO DE HIDROGENO FORMADO; SEPARACION DEL DISOLVENTE Y DE LOS COMPUESTOS MAS VOLATILES, QUE TIENEN GRUPOS NCO, Y RECUPERACION DEL PRODUCTO POCO VOLATIL QUE SE SOMETE A REDESTILACION; TRATAMIENTO DEL CONDENSADO CON COMPUESTOS QUE TIENEN ATOMOS DE HIDROGENO REACTIVOS RESPECTO A LOS GRUPOS ISOCIANATO Y LIBERACION DE LOS PRODUCTOS POCO VOLATILES, POR DESTILACION.
ES514300A 1981-07-24 1982-07-23 Procedimiento para la obtencion de poliisocianatos. Expired ES8305311A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19813129270 DE3129270A1 (de) 1981-07-24 1981-07-24 Verfahren zur herstellung von polyisocyanaten

Publications (2)

Publication Number Publication Date
ES514300A0 ES514300A0 (es) 1983-04-01
ES8305311A1 true ES8305311A1 (es) 1983-04-01

Family

ID=6137669

Family Applications (1)

Application Number Title Priority Date Filing Date
ES514300A Expired ES8305311A1 (es) 1981-07-24 1982-07-23 Procedimiento para la obtencion de poliisocianatos.

Country Status (6)

Country Link
US (1) US4405527A (es)
EP (1) EP0071080B1 (es)
JP (1) JPS5824553A (es)
BR (1) BR8204274A (es)
DE (2) DE3129270A1 (es)
ES (1) ES8305311A1 (es)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3413174A1 (de) * 1984-04-07 1985-10-17 Bayer Ag, 5090 Leverkusen Verfahren zur herstellung von polyisocyanaten
DE4006976A1 (de) * 1990-03-06 1991-09-12 Basf Ag Verfahren zur herstellung von mischungen aus diphenylmethan-diisocyanaten und polyphenyl-polymethylen-polyisocyanaten mit einer verminderten iodfarbzahl
DE10122234A1 (de) 2001-05-08 2002-11-14 Bayer Ag Verfahren zur Herstellung von 1,4-Diaminonaphthalin und/oder 1,5-Diaminonaphthalin
ES2439080T3 (es) 2004-07-28 2014-01-21 Huntsman International Llc Procedimiento para la producción de poliisocianatos
ES2394493T3 (es) * 2004-07-28 2013-02-01 Huntsman International Llc Procedimiento para la producción de poliisocianatos
WO2007039362A1 (en) * 2005-09-22 2007-04-12 Huntsman International Llc Method for the production of polyisocyanates
DE102006022448A1 (de) * 2006-05-13 2007-11-15 Bayer Materialscience Ag Verfahren zur Herstellung von Isocyanaten
WO2009155085A2 (en) * 2008-05-30 2009-12-23 E. I. Du Pont De Nemours And Company Renewably resourced chemicals and intermediates
WO2020091867A1 (en) 2018-10-31 2020-05-07 Dow Global Technologies Llc Method for removing monoisocyanates from organic solution
WO2020117408A1 (en) 2018-12-07 2020-06-11 Dow Global Technologies Llc Method for converting monoisocyanates to ureas
EP3921349A1 (en) 2019-02-07 2021-12-15 Dow Global Technologies LLC Phenyl isocyanate conversion process
WO2022077429A1 (zh) * 2020-10-16 2022-04-21 万华化学集团股份有限公司 光气化反应生产中的循环溶剂及其除杂方法
CN114380714B (zh) * 2020-10-16 2023-08-11 万华化学集团股份有限公司 光气化反应生产中的循环溶剂及其除杂方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1469105A (fr) * 1965-12-27 1967-02-10 Toulousaine De Prod Chim Toloc Procédé de fabrication d'esters isocyaniques
US3835172A (en) * 1968-07-25 1974-09-10 Hoechst Ag Process for the manufacture of aromatic isocyanates using oxyethylate catalysts

Also Published As

Publication number Publication date
ES514300A0 (es) 1983-04-01
BR8204274A (pt) 1983-07-19
EP0071080B1 (de) 1985-09-25
EP0071080A2 (de) 1983-02-09
JPH0232272B2 (es) 1990-07-19
EP0071080A3 (en) 1984-01-18
JPS5824553A (ja) 1983-02-14
DE3266550D1 (en) 1985-10-31
DE3129270A1 (de) 1983-02-10
US4405527A (en) 1983-09-20

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19970401