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GB835592A - Chlorinated organic diisocyanates and a method for the preparation thereof - Google Patents

Chlorinated organic diisocyanates and a method for the preparation thereof

Info

Publication number
GB835592A
GB835592A GB790457A GB790457A GB835592A GB 835592 A GB835592 A GB 835592A GB 790457 A GB790457 A GB 790457A GB 790457 A GB790457 A GB 790457A GB 835592 A GB835592 A GB 835592A
Authority
GB
United Kingdom
Prior art keywords
chlorotolylene
diisocyanate
isocyanate
mixtures
tolylene
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
GB790457A
Inventor
Geoffrey Arthur Haggis
Arthur Lambert
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 GB790457A priority Critical patent/GB835592A/en
Publication of GB835592A publication Critical patent/GB835592A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C265/00—Derivatives of isocyanic acid
    • C07C265/14—Derivatives of isocyanic acid containing at least two isocyanate groups bound to the same carbon skeleton
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C263/00—Preparation of derivatives of isocyanic acid
    • C07C263/16—Preparation of derivatives of isocyanic acid by reactions not involving the formation of isocyanate groups
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
    • C08G18/72—Polyisocyanates or polyisothiocyanates
    • C08G18/77—Polyisocyanates or polyisothiocyanates having heteroatoms in addition to the isocyanate or isothiocyanate nitrogen and oxygen or sulfur
    • C08G18/773—Polyisocyanates or polyisothiocyanates having heteroatoms in addition to the isocyanate or isothiocyanate nitrogen and oxygen or sulfur halogens

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

The invention comprises monochlorinated derivatives of tolylene 2 : 4 and 2 : 6-diisocyanate wherein the chlorine atom is in the aromatic nucleus. Compounds specified are 5-chlorotolylene 2 : 4-diisocyanate, and mixtures thereof with 3-chlorotolylene-2 : 6-diisocyanate. The compounds of the invention may be prepared by reacting tolylene 2 : 4 or 2 : 6-diisocyanate or mixtures thereof with chlorine at a temperature up to 80 DEG C. The reaction may be carried out in an inert solvent, e.g. carbon tetrachloride, and a halogen carrier such as iodine may also be present. Examples are given. 5-Chlorotolylene-2,4-di-isocyanate is converted to 5-chlorotolylene-2,4-diamine by hydrolysis. Specification 752,931 is referred to.ALSO:Monochlorinated derivatives of tolylene 2 : 4 and 2 : 6-diisocyanate wherein the chlorine atom is in the aromatic nucleus, viz. 5-chlorotolylene 2 : 4-di-isocyanate and mixtures thereof with 3-chlorotolylene 2 : 6-di-isocyanate are used as intermediates in the manufacture of polyurethanes. The isocyanates may also be converted into reaction products with, e.g. phenol, or acetoacetic esters, or polymers by the use of basic catalysts. Specification 752,931 is referred to.
GB790457A 1957-03-11 1957-03-11 Chlorinated organic diisocyanates and a method for the preparation thereof Expired GB835592A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB790457A GB835592A (en) 1957-03-11 1957-03-11 Chlorinated organic diisocyanates and a method for the preparation thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB790457A GB835592A (en) 1957-03-11 1957-03-11 Chlorinated organic diisocyanates and a method for the preparation thereof

Publications (1)

Publication Number Publication Date
GB835592A true GB835592A (en) 1960-05-25

Family

ID=9842035

Family Applications (1)

Application Number Title Priority Date Filing Date
GB790457A Expired GB835592A (en) 1957-03-11 1957-03-11 Chlorinated organic diisocyanates and a method for the preparation thereof

Country Status (1)

Country Link
GB (1) GB835592A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3305574A (en) * 1967-02-21 Isocyanate process
US3360539A (en) * 1963-04-12 1967-12-26 Union Carbide Corp Chlorination of aromatic isocyanates
US3439015A (en) * 1964-04-15 1969-04-15 Du Pont Process for ring halogenating alkyl-substituted aromatic isocyanates

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3305574A (en) * 1967-02-21 Isocyanate process
US3360539A (en) * 1963-04-12 1967-12-26 Union Carbide Corp Chlorination of aromatic isocyanates
US3439015A (en) * 1964-04-15 1969-04-15 Du Pont Process for ring halogenating alkyl-substituted aromatic isocyanates

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