GB1316953A - Process for the manufacture of organic isocyanates - Google Patents
Process for the manufacture of organic isocyanatesInfo
- Publication number
- GB1316953A GB1316953A GB3189369A GB1316953DA GB1316953A GB 1316953 A GB1316953 A GB 1316953A GB 3189369 A GB3189369 A GB 3189369A GB 1316953D A GB1316953D A GB 1316953DA GB 1316953 A GB1316953 A GB 1316953A
- Authority
- GB
- United Kingdom
- Prior art keywords
- organic
- acid
- present
- june
- solvent
- 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
- C07C263/00—Preparation of derivatives of isocyanic acid
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
1316953 Organic isocyanates IMPERIAL CHEMICAL INDUSTRIES Ltd 9 June 1970 [24 June 1969 24 April 1970] 31893/69 and 19853/70 Headings C2C and C2P Organic isocyanates are prepared by reacting an organic halide which contains at least one aliphatically (or cycloaliphatically) bound halogen atom with an alkali or alkaline earth metal or ammonium or methyl or ethyl-substituted ammonium cyanate, a small amount of acid, preferably 0À1-10% by weight of the organic halide, being present during the isolation of the product. The acid, preferably a mineral or organic sulphonic acid, may be mixed with the reactants at the beginning of the reaction. A catalyst such as iodine, iodine monochloride or a mixture thereof may be present. A solvent, preferably a mixture of a solvent of high polarity with one of low polarity may be present. The reaction temperature is preferably 50‹ to 160‹ C.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3189369 | 1969-06-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1316953A true GB1316953A (en) | 1973-05-16 |
Family
ID=10329975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3189369A Expired GB1316953A (en) | 1969-06-24 | 1969-06-24 | Process for the manufacture of organic isocyanates |
Country Status (3)
| Country | Link |
|---|---|
| BR (1) | BR7019958D0 (en) |
| GB (1) | GB1316953A (en) |
| ZA (1) | ZA704164B (en) |
-
1969
- 1969-06-24 GB GB3189369A patent/GB1316953A/en not_active Expired
-
1970
- 1970-06-18 ZA ZA704164A patent/ZA704164B/en unknown
- 1970-06-24 BR BR219958/70A patent/BR7019958D0/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| ZA704164B (en) | 1971-07-28 |
| BR7019958D0 (en) | 1973-01-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |