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GB901377A - The preparation of organic isocyanates - Google Patents

The preparation of organic isocyanates

Info

Publication number
GB901377A
GB901377A GB224760A GB224760A GB901377A GB 901377 A GB901377 A GB 901377A GB 224760 A GB224760 A GB 224760A GB 224760 A GB224760 A GB 224760A GB 901377 A GB901377 A GB 901377A
Authority
GB
United Kingdom
Prior art keywords
isocyanate
preparation
phosgene
produce
organic isocyanates
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
GB224760A
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 GB901377A publication Critical patent/GB901377A/en
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

Organic isocyanates are prepared by reacting an organic amine under pressure in a mixing zone with phosgene, one of the components following a spiral path and the other being introduced into the vortex in counter-current in a primary phosgenation step to produce the corresponding carbamyl chloride and amine hydrochloride, which is reacted in a second phosgenation step with a further excess of phosgene at a temperature of at least 100 DEG C. to produce the corresponding isocyanate. Both reactants are preferably dissolved in an inert solvent. Apparatus for carrying out the process is described. In examples the preparation of toluylene diisocyanate, 4:41-diisocyanatodiphenyl-methane, m-chlorophenyl isocyanate, stearyl isocyanate, hexamethylene diisocyanate and 1:3-di(isocyanatomethyl)-benzene is described. Specifications 761,590 and 763,535 are referred to.
GB224760A 1959-01-29 1960-01-21 The preparation of organic isocyanates Expired GB901377A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEF27595A DE1146872B (en) 1959-01-29 1959-01-29 Process for the production of organic isocyanates

Publications (1)

Publication Number Publication Date
GB901377A true GB901377A (en) 1962-07-18

Family

ID=7092514

Family Applications (1)

Application Number Title Priority Date Filing Date
GB224760A Expired GB901377A (en) 1959-01-29 1960-01-21 The preparation of organic isocyanates

Country Status (3)

Country Link
DE (1) DE1146872B (en)
FR (1) FR1246034A (en)
GB (1) GB901377A (en)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1289649B1 (en) * 2000-05-26 2007-04-04 Basf Aktiengesellschaft Method and device for the continuous production of organic mono or polyisocyanates
US7547801B2 (en) 2006-06-26 2009-06-16 Bayer Materialscience Llc Process for the continuous preparation of isocyanates
US9272988B2 (en) 2012-09-24 2016-03-01 Covestro Deutschland Ag Method for producing diisocyanates by phosgenating diamine suspensions
US10112892B2 (en) 2015-06-29 2018-10-30 Covestro Deutschland Ag Process for preparing polyisocyanates
US10780083B1 (en) 2019-03-11 2020-09-22 Nocion Therapeutics, Inc. Charged ion channel blockers and methods for use
US10786485B1 (en) 2019-03-11 2020-09-29 Nocion Therapeutics, Inc. Charged ion channel blockers and methods for use
US10815193B2 (en) 2015-06-29 2020-10-27 Covestro Deutschland Ag Process for providing hydrogen chloride for chemical reactions
US10842798B1 (en) 2019-11-06 2020-11-24 Nocion Therapeutics, Inc. Charged ion channel blockers and methods for use
US10927096B2 (en) 2019-03-11 2021-02-23 Nocion Therapeutics, Inc. Ester substituted ion channel blockers and methods for use
US10933055B1 (en) 2019-11-06 2021-03-02 Nocion Therapeutics, Inc. Charged ion channel blockers and methods for use
US10934263B2 (en) 2019-03-11 2021-03-02 Nocion Therapeutics, Inc. Charged ion channel blockers and methods for use
US10968179B2 (en) 2019-03-11 2021-04-06 Nocion Therapeutics, Inc. Charged ion channel blockers and methods for use
US11332446B2 (en) 2020-03-11 2022-05-17 Nocion Therapeutics, Inc. Charged ion channel blockers and methods for use
US12162851B2 (en) 2020-03-11 2024-12-10 Nocion Therapeutics, Inc. Charged ion channel blockers and methods for use

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2624285C2 (en) * 1976-05-31 1987-03-12 Basf Ag, 6700 Ludwigshafen Process for the continuous production of organic isocyanates
DE10260082A1 (en) 2002-12-19 2004-07-01 Basf Ag Process for the continuous production of isocyanates

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1126440A (en) * 1955-03-17 1956-11-22 Le Ministre De La Defense Nationale Improvements in the manufacture of isocyanates
FR69428E (en) * 1955-03-17 1958-11-06 Le Ministre De La Defense Nationale Improvements in the manufacture of isocyanates

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1289649B1 (en) * 2000-05-26 2007-04-04 Basf Aktiengesellschaft Method and device for the continuous production of organic mono or polyisocyanates
US7547801B2 (en) 2006-06-26 2009-06-16 Bayer Materialscience Llc Process for the continuous preparation of isocyanates
US9272988B2 (en) 2012-09-24 2016-03-01 Covestro Deutschland Ag Method for producing diisocyanates by phosgenating diamine suspensions
US10815193B2 (en) 2015-06-29 2020-10-27 Covestro Deutschland Ag Process for providing hydrogen chloride for chemical reactions
US10112892B2 (en) 2015-06-29 2018-10-30 Covestro Deutschland Ag Process for preparing polyisocyanates
US11512058B2 (en) 2019-03-11 2022-11-29 Nocion Therapeutics, Inc. Charged ion channel blockers and methods for use
US10968179B2 (en) 2019-03-11 2021-04-06 Nocion Therapeutics, Inc. Charged ion channel blockers and methods for use
US10828287B2 (en) 2019-03-11 2020-11-10 Nocion Therapeutics, Inc. Charged ion channel blockers and methods for use
US12195428B2 (en) 2019-03-11 2025-01-14 Nocion Therapeutics, Inc. Charged ion channel blockers and methods for use
US10927096B2 (en) 2019-03-11 2021-02-23 Nocion Therapeutics, Inc. Ester substituted ion channel blockers and methods for use
US11643404B2 (en) 2019-03-11 2023-05-09 Nocion Therapeutics, Inc. Ester substituted ion channel blockers and methods for use
US10934263B2 (en) 2019-03-11 2021-03-02 Nocion Therapeutics, Inc. Charged ion channel blockers and methods for use
US10786485B1 (en) 2019-03-11 2020-09-29 Nocion Therapeutics, Inc. Charged ion channel blockers and methods for use
US11603355B2 (en) 2019-03-11 2023-03-14 Nocion Therapeutics, Inc. Charged ion channel blockers and methods for use
US11377422B2 (en) 2019-03-11 2022-07-05 Nocion Therapeutics, Inc. Charged ion channel blockers and methods for use
US10780083B1 (en) 2019-03-11 2020-09-22 Nocion Therapeutics, Inc. Charged ion channel blockers and methods for use
US10933055B1 (en) 2019-11-06 2021-03-02 Nocion Therapeutics, Inc. Charged ion channel blockers and methods for use
US11696912B2 (en) 2019-11-06 2023-07-11 Nocion Therapeutics, Inc. Charged ion channel blockers and methods for use
US10842798B1 (en) 2019-11-06 2020-11-24 Nocion Therapeutics, Inc. Charged ion channel blockers and methods for use
US11332446B2 (en) 2020-03-11 2022-05-17 Nocion Therapeutics, Inc. Charged ion channel blockers and methods for use
US12162851B2 (en) 2020-03-11 2024-12-10 Nocion Therapeutics, Inc. Charged ion channel blockers and methods for use

Also Published As

Publication number Publication date
FR1246034A (en) 1960-11-10
DE1146872B (en) 1963-04-11

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