GB1001909A - Process for the production of monomeric formaldehyde with a high degree of purity - Google Patents
Process for the production of monomeric formaldehyde with a high degree of purityInfo
- Publication number
- GB1001909A GB1001909A GB17664A GB17664A GB1001909A GB 1001909 A GB1001909 A GB 1001909A GB 17664 A GB17664 A GB 17664A GB 17664 A GB17664 A GB 17664A GB 1001909 A GB1001909 A GB 1001909A
- Authority
- GB
- United Kingdom
- Prior art keywords
- hemi
- formal
- decomposition
- hydrogen fluoride
- purity
- 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
- C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
- C07C45/51—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by pyrolysis, rearrangement or decomposition
- C07C45/511—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by pyrolysis, rearrangement or decomposition involving transformation of singly bound oxygen functional groups to >C = O groups
- C07C45/515—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by pyrolysis, rearrangement or decomposition involving transformation of singly bound oxygen functional groups to >C = O groups the singly bound functional group being an acetalised, ketalised hemi-acetalised, or hemi-ketalised hydroxyl group
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Formaldehyde of a high degree of purity is made by the thermal decomposition of hemi-formals of poly-valent alcohols in an apparatus having aluminium or austenitic stainless steel surfaces which come into contact with the product and which are treated with fluorine and/or hydrogen fluoride or its aqueous solutions prior to the decomposition of the hemi-formals. It is preferred to treat the reactor surfaces with hydrogen fluoride and phosphoric or nitric acid or with mixtures of hydrogen fluoride and phosphoric or nitric acid. Small quantities, e.g. 0.01-2% by weight of hemi-formal, of hydrofluoric acid may be added to the hemi-formal prior to decomposition. Examples describe the decomposition of ethylene glycol hemi-formal and diethylene glycol hemi-formal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB17664A GB1001909A (en) | 1964-01-02 | 1964-01-02 | Process for the production of monomeric formaldehyde with a high degree of purity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB17664A GB1001909A (en) | 1964-01-02 | 1964-01-02 | Process for the production of monomeric formaldehyde with a high degree of purity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1001909A true GB1001909A (en) | 1965-08-18 |
Family
ID=9699759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB17664A Expired GB1001909A (en) | 1964-01-02 | 1964-01-02 | Process for the production of monomeric formaldehyde with a high degree of purity |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1001909A (en) |
-
1964
- 1964-01-02 GB GB17664A patent/GB1001909A/en not_active Expired
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