GB1077031A - A process for the production of isocyanates - Google Patents

A process for the production of isocyanates

Info

Publication number
GB1077031A
GB1077031A GB127566A GB127566A GB1077031A GB 1077031 A GB1077031 A GB 1077031A GB 127566 A GB127566 A GB 127566A GB 127566 A GB127566 A GB 127566A GB 1077031 A GB1077031 A GB 1077031A
Authority
GB
United Kingdom
Prior art keywords
diisocyanate
bis
reaction
isocyanates
dimethyl
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
GB127566A
Inventor
Heinrich Krimm
Hermann Schnell
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 GB1077031A publication Critical patent/GB1077031A/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
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C319/00—Preparation of thiols, sulfides, hydropolysulfides or polysulfides
    • C07C319/14—Preparation of thiols, sulfides, hydropolysulfides or polysulfides of sulfides
    • C07C319/20—Preparation of thiols, sulfides, hydropolysulfides or polysulfides of sulfides by reactions not involving the formation of sulfide groups

Landscapes

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

Abstract

Isocyanates are prepared by reacting a primary amine, or an acid addition salt thereof, with at least a stoichiometric quantity of phosgene in the presence of a quantity of a tertiary amine sufficient to combine with the HCl formed during the reaction, and with any other acid which may be liberated. A large number of mono- and poly-amines are specified as starting materials. N,N-Dimethyl- and N,N-diethyl aniline are preferred tertiary amines. The reaction is usually effected at -10 DEG to 30 DEG C., but temperatures as high as 150 DEG C. may be employed. Examples relate to the preparation of bis-(4-isocyanatophenyl)-dimethyl methane, p-phenylene diisocyanate, cyclohexylisocyanate, ethyl isocyanate, hexamethylene diisocyanate, 1,4-butylene-bis-isocyanato-isopropyl ether, p-chlorophenylisocyanate, naphthalene - 2,7 - di - isocyanate, isopropylidene - 2,4,41 - triisocyanato - dibenzene and diphenylsulphide-4,41-diisocyanate.
GB127566A 1965-03-03 1966-01-11 A process for the production of isocyanates Expired GB1077031A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEF45410A DE1233854B (en) 1965-03-03 1965-03-03 Process for producing isocyanates

Publications (1)

Publication Number Publication Date
GB1077031A true GB1077031A (en) 1967-07-26

Family

ID=7100482

Family Applications (1)

Application Number Title Priority Date Filing Date
GB127566A Expired GB1077031A (en) 1965-03-03 1966-01-11 A process for the production of isocyanates

Country Status (2)

Country Link
DE (1) DE1233854B (en)
GB (1) GB1077031A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7504533B2 (en) 2006-04-24 2009-03-17 Bayer Materialscience Llc Process for the production of isocyanates
US7547801B2 (en) 2006-06-26 2009-06-16 Bayer Materialscience Llc Process for the continuous preparation of isocyanates
US7645900B2 (en) 2008-02-19 2010-01-12 Bayer Materialscience Ag Process for the preparation of isocyanates
CN102659631A (en) * 2011-12-24 2012-09-12 德州绿邦化工有限公司 One-step synthesis of ethyl isocyanate
CN107787317A (en) * 2015-06-29 2018-03-09 科思创德国股份有限公司 The method that hydrogen chloride for chemical reaction is provided
US10112892B2 (en) 2015-06-29 2018-10-30 Covestro Deutschland Ag Process for preparing polyisocyanates

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19833007A1 (en) * 1998-07-23 2000-02-03 Hoechst Schering Agrevo Gmbh Process for the preparation of 4,6-disubstituted 2-isocyanatopyrimidines and their use as intermediates for drug synthesis
DE10260082A1 (en) 2002-12-19 2004-07-01 Basf Ag Process for the continuous production of isocyanates
DE10260084A1 (en) 2002-12-19 2004-07-01 Basf Ag Separation of a mixture of hydrogen chloride and phosgene

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7504533B2 (en) 2006-04-24 2009-03-17 Bayer Materialscience Llc Process for the production of isocyanates
US7547801B2 (en) 2006-06-26 2009-06-16 Bayer Materialscience Llc Process for the continuous preparation of isocyanates
US7645900B2 (en) 2008-02-19 2010-01-12 Bayer Materialscience Ag Process for the preparation of isocyanates
CN102659631A (en) * 2011-12-24 2012-09-12 德州绿邦化工有限公司 One-step synthesis of ethyl isocyanate
CN102659631B (en) * 2011-12-24 2014-05-07 德州绿邦化工有限公司 One-step synthesis of ethyl isocyanate
CN107787317A (en) * 2015-06-29 2018-03-09 科思创德国股份有限公司 The method that hydrogen chloride for chemical reaction is provided
US10112892B2 (en) 2015-06-29 2018-10-30 Covestro Deutschland Ag Process for preparing polyisocyanates
CN107787317B (en) * 2015-06-29 2020-08-28 科思创德国股份有限公司 Method for providing hydrogen chloride for chemical reactions
US10815193B2 (en) 2015-06-29 2020-10-27 Covestro Deutschland Ag Process for providing hydrogen chloride for chemical reactions

Also Published As

Publication number Publication date
DE1233854B (en) 1967-02-09

Similar Documents

Publication Publication Date Title
GB1078202A (en) A process for the production of aqueous polyurethane latices
GB1077031A (en) A process for the production of isocyanates
ATE5072T1 (en) PROCESS FOR THE PRODUCTION OF POLYAMINE.
ATE2137T1 (en) PROCESSES FOR THE PRODUCTION OF ALIPHATIC AND CYCLOALIPHATIC DI- AND POLYURETHANES.
GB1205486A (en) Process for obtaining non-volatile, low molecular weight mono- and polyisocyanates containing tertiary amino groups
GB879058A (en) Method of moulding
GB1165877A (en) Production of Polyurethanes
JPS56103152A (en) Manufacture of n*oodisubstituted urethane useful for manufacture of isocyanate
GB901377A (en) The preparation of organic isocyanates
IE44472L (en) Producing urethanes
GB978917A (en) Process for preparing isocyanates
KR910007996A (en) Method for producing aliphatic isocyanate
GB901396A (en) Process for the production of polyurethane plastics
GB879167A (en) Improvements in or relating to the manufacture of cellular polyurethanes
GB1415560A (en) Process for the production of soft elastic cold setting polyether urefane foams
ATE80158T1 (en) PROCESSES FOR THE PRODUCTION OF PRIMARY ARALKYLURETHANES, UREAS AND ISOCYANATES DERIVED FROM THEM.
GB908949A (en) Improvements in or relating to the manufacture of polymers
GB1146664A (en) Process for the manufacture of organic isocyanates
US3850985A (en) Process for the production of acylisocyanates
GB936370A (en) Isocyanates of furan and tetrahydrofuran
GB1221534A (en) Improvements relating to poromeric materials
GB1043672A (en) Biuret polyisocyanates and production thereof
GB979259A (en) A process for the preparation of organic isocyanates
JPS57158751A (en) Manufacture of urethane and use as isocyanate manufacturing raw material
GB893729A (en) Improvements in and relating to the preparation of aromatic isocyanates