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GB1146664A - Process for the manufacture of organic isocyanates - Google Patents

Process for the manufacture of organic isocyanates

Info

Publication number
GB1146664A
GB1146664A GB2374165A GB2374165A GB1146664A GB 1146664 A GB1146664 A GB 1146664A GB 2374165 A GB2374165 A GB 2374165A GB 2374165 A GB2374165 A GB 2374165A GB 1146664 A GB1146664 A GB 1146664A
Authority
GB
United Kingdom
Prior art keywords
amine hydrochloride
amine
diisocyanate
organic isocyanates
phosgenation
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
GB2374165A
Inventor
Henry Russell Hincklieff
James Twitchett Barbara Harry
Peter Bernard Shaw Luckman
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
Priority to NL129422D priority Critical patent/NL129422C/xx
Application filed by Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB2374165A priority patent/GB1146664A/en
Priority to DE19661568844 priority patent/DE1568844A1/en
Priority to FR64108A priority patent/FR1482314A/en
Priority to NL6607781A priority patent/NL6607781A/xx
Publication of GB1146664A publication Critical patent/GB1146664A/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

1,146,664. Preparation of organic isocyanates. IMPERIAL CHEMICAL INDUSTRIES Ltd. 17 May, 1966 [3 June, 1965; 18 Feb., 1966], Nos. 23741/65 and 7276/66. Heading C2C. A process for the manufacture of organic isocyanates by the phosgenation of an amine hydrochloride comprises forming the amine hydrochloride by treating a solution of said amine in an inert solvent, said solution being in the form of a thin film having a constantly changing surface, with hydrogen chloride and reacting the amine hydrochloride so produced with phosgene. The phosgenation may be effected batchwise or continuously, suitably at a temperature of 75-200‹ C. and the phosgene may also be introduced with the hydrogen chloride during the formation of the amine hydrochloride. In the examples, the following isocyanates are prepared: tolylene diisocyanate, a mixture of 2,4- and 2,6-tolylene diisocyanates, diphenylmethane diisocyanate, hexamethylene diisocyanate, dodecamethylene diisocyanate, and m- and p-xylylene diisocyanates. The amine hydrochloride may be prepared as a slurry or suspension in an inert solvent, e.g. an ester, hydrocarbon or halohydrocarbon, by employing a thin film evaporator or processor: the reaction may be effected at 0-100‹ C., optionally at elevated pressure, and the solvent may contain 4 to 16% by weight of the amine starting material.
GB2374165A 1965-06-03 1965-06-03 Process for the manufacture of organic isocyanates Expired GB1146664A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
NL129422D NL129422C (en) 1965-06-03
GB2374165A GB1146664A (en) 1965-06-03 1965-06-03 Process for the manufacture of organic isocyanates
DE19661568844 DE1568844A1 (en) 1965-06-03 1966-06-03 Process for the production of organic polyisocyanates
FR64108A FR1482314A (en) 1965-06-03 1966-06-03 Process for manufacturing organic isocyanates
NL6607781A NL6607781A (en) 1965-06-03 1966-06-03

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB2374165A GB1146664A (en) 1965-06-03 1965-06-03 Process for the manufacture of organic isocyanates
GB727666 1966-02-18

Publications (1)

Publication Number Publication Date
GB1146664A true GB1146664A (en) 1969-03-26

Family

ID=26241309

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2374165A Expired GB1146664A (en) 1965-06-03 1965-06-03 Process for the manufacture of organic isocyanates

Country Status (3)

Country Link
DE (1) DE1568844A1 (en)
GB (1) GB1146664A (en)
NL (2) NL6607781A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60255758A (en) * 1984-06-01 1985-12-17 Mitsui Toatsu Chem Inc Production of hexamethylene diisocyanate
US4922005A (en) * 1985-11-13 1990-05-01 Mitsui Toatsu Chemicals, Incorporated Preparation process of hexamethylene
US8183407B2 (en) 2005-07-22 2012-05-22 Mitsui Chemicals, Inc. Process for production of isocyanate, isocyanate produced by the process, and use of the isocyanate
WO2015162106A1 (en) * 2014-04-23 2015-10-29 Basf Se Method for producing isocyanates in dialkyl carbonates as solvents
CN105218422A (en) * 2015-10-16 2016-01-06 万华化学集团股份有限公司 A kind of preparation method of isocyanic ester
CN106496072A (en) * 2016-09-27 2017-03-15 江苏嘉隆化工有限公司 A kind of preparation method of MDI

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3323882A1 (en) * 1982-10-09 1984-04-12 Chemische Werke Hüls AG, 4370 Marl METHOD FOR CONTINUOUS HOT PHOSGENATION OF AMINES

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60255758A (en) * 1984-06-01 1985-12-17 Mitsui Toatsu Chem Inc Production of hexamethylene diisocyanate
DE3540863C1 (en) * 1984-06-01 1987-07-23 Mitsui Toatsu Chemicals Process for preparing hexamethylene diisocyanate
US4922005A (en) * 1985-11-13 1990-05-01 Mitsui Toatsu Chemicals, Incorporated Preparation process of hexamethylene
US8183407B2 (en) 2005-07-22 2012-05-22 Mitsui Chemicals, Inc. Process for production of isocyanate, isocyanate produced by the process, and use of the isocyanate
WO2015162106A1 (en) * 2014-04-23 2015-10-29 Basf Se Method for producing isocyanates in dialkyl carbonates as solvents
CN106232574A (en) * 2014-04-23 2016-12-14 巴斯夫欧洲公司 Process for the preparation of isocyanates in dialkyl carbonate as solvent
US10093615B2 (en) 2014-04-23 2018-10-09 Basf Se Process for preparing isocyanates in dialkyl carbonates as solvent
US10435354B2 (en) 2014-04-23 2019-10-08 Basf Se Process for preparing isocyanates in dialkyl carbonates as solvent
CN113480452A (en) * 2014-04-23 2021-10-08 巴斯夫欧洲公司 Method for producing isocyanates in dialkyl carbonates as solvents
CN105218422A (en) * 2015-10-16 2016-01-06 万华化学集团股份有限公司 A kind of preparation method of isocyanic ester
CN106496072A (en) * 2016-09-27 2017-03-15 江苏嘉隆化工有限公司 A kind of preparation method of MDI

Also Published As

Publication number Publication date
DE1568844A1 (en) 1970-07-16
NL6607781A (en) 1966-12-05
NL129422C (en)

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