GB1120770A - Manufacture of organic isocyanates - Google Patents

Manufacture of organic isocyanates

Info

Publication number
GB1120770A
GB1120770A GB3521466A GB3521466A GB1120770A GB 1120770 A GB1120770 A GB 1120770A GB 3521466 A GB3521466 A GB 3521466A GB 3521466 A GB3521466 A GB 3521466A GB 1120770 A GB1120770 A GB 1120770A
Authority
GB
United Kingdom
Prior art keywords
organic isocyanates
stage
manufacture
isocyanates
phosgene
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
GB3521466A
Inventor
Robert Lomax
Harry James Twitchett
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB3521466A priority Critical patent/GB1120770A/en
Publication of GB1120770A publication Critical patent/GB1120770A/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 mixing in a first stage an excess of phosgene with a solution or suspension of a primary amine in an inert solvent while passing HCl in an amount not above 1 mole per mole NH2 group, and in a second stage or series of subsequent stages completing the reaction by heating, with optional addition of further phosgene. Examples describe the production of tolylene diisocyanate, but other isocyanates are listed.
GB3521466A 1966-08-05 1966-08-05 Manufacture of organic isocyanates Expired GB1120770A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3521466A GB1120770A (en) 1966-08-05 1966-08-05 Manufacture of organic isocyanates

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3521466A GB1120770A (en) 1966-08-05 1966-08-05 Manufacture of organic isocyanates

Publications (1)

Publication Number Publication Date
GB1120770A true GB1120770A (en) 1968-07-24

Family

ID=10375165

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3521466A Expired GB1120770A (en) 1966-08-05 1966-08-05 Manufacture of organic isocyanates

Country Status (1)

Country Link
GB (1) GB1120770A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003099770A1 (en) * 2002-05-23 2003-12-04 Basf Aktiengesellschaft Method for producing isocyanates
CN104640840A (en) * 2012-09-24 2015-05-20 拜耳材料科技股份有限公司 Method for producing diisocyanates by phosgenating diamine suspensions

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003099770A1 (en) * 2002-05-23 2003-12-04 Basf Aktiengesellschaft Method for producing isocyanates
US7112694B2 (en) 2002-05-23 2006-09-26 Basf Aktiengesellschaft Method for producing isocyanates
CN100361968C (en) * 2002-05-23 2008-01-16 巴斯福股份公司 Method for producing isocyanates
CN101108812B (en) * 2002-05-23 2010-06-02 巴斯福股份公司 Method for producing isocyanates
CN104640840A (en) * 2012-09-24 2015-05-20 拜耳材料科技股份有限公司 Method for producing diisocyanates by phosgenating diamine suspensions

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