GB835592A - Chlorinated organic diisocyanates and a method for the preparation thereof - Google Patents
Chlorinated organic diisocyanates and a method for the preparation thereofInfo
- 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
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)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (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.
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)
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 |
-
1957
- 1957-03-11 GB GB790457A patent/GB835592A/en not_active Expired
Cited By (3)
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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