GB918403A - Improvements in or relating to polyalcohols - Google Patents
Improvements in or relating to polyalcoholsInfo
- Publication number
- GB918403A GB918403A GB157961A GB157961A GB918403A GB 918403 A GB918403 A GB 918403A GB 157961 A GB157961 A GB 157961A GB 157961 A GB157961 A GB 157961A GB 918403 A GB918403 A GB 918403A
- Authority
- GB
- United Kingdom
- Prior art keywords
- polyalcohols
- preparation
- added
- dimethyl formamide
- formaldehyde
- 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
- C07C31/00—Saturated compounds having hydroxy or O-metal groups bound to acyclic carbon atoms
- C07C31/18—Polyhydroxylic acyclic alcohols
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
In a process for the preparation of polyalcohols by the reaction of formaldehyde and an aliphatic carbonyl compound in an aqueous alkaline solution at a pH between 4 and 7, after removal of the unreacted formaldehyde an aliphatic primary N-dialkyl-substituted amide <FORM:0918403/IV (b)/1> in which R4 represents hydrogen or an alkyl radical and R2 and R3 alkyl radicals, is added to the reaction solution which is concentrated at between 50 and 130 DEG C. to eliminate water and precipitate mineral salts, and the polyalcohol is then recovered. The preparation of trimethylol ethane, trimethylol propane, and pentaerythritol in which N-dimethyl formamide is used are exemplified and amides such as N-dimethyl acetamide, N-diethylacetamide, N-dimethyl formamide, and N-propylformamide are referred to. The synthesis solution may be preconcentrated at not more than 120 DEG C. and from 0.1 to 10 times the partial volume of the polyalcohols, of amide may be added.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR817149A FR1255983A (en) | 1960-01-30 | 1960-01-30 | Improvement in the process for preparing polyalcohols such as methylolalkanes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB918403A true GB918403A (en) | 1963-02-13 |
Family
ID=8724549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB157961A Expired GB918403A (en) | 1960-01-30 | 1961-01-13 | Improvements in or relating to polyalcohols |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE599316A (en) |
| ES (1) | ES264776A1 (en) |
| FR (1) | FR1255983A (en) |
| GB (1) | GB918403A (en) |
| LU (1) | LU39687A1 (en) |
-
1960
- 1960-01-30 FR FR817149A patent/FR1255983A/en not_active Expired
-
1961
- 1961-01-13 GB GB157961A patent/GB918403A/en not_active Expired
- 1961-01-20 BE BE599316A patent/BE599316A/en unknown
- 1961-01-25 LU LU39687D patent/LU39687A1/xx unknown
- 1961-02-10 ES ES0264776A patent/ES264776A1/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1255983A (en) | 1961-03-17 |
| LU39687A1 (en) | 1961-03-25 |
| BE599316A (en) | 1961-05-16 |
| ES264776A1 (en) | 1961-04-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB999799A (en) | Purification of gases | |
| GB918403A (en) | Improvements in or relating to polyalcohols | |
| GB1042480A (en) | Substituted pyridyl coumarins | |
| GB639962A (en) | Process for the production of melamine | |
| ES302818A1 (en) | A procedure for the preparation of 3-amino-isoxazoles. (Machine-translation by Google Translate, not legally binding) | |
| ES319653A1 (en) | A procedure for the preparation of imidazole derivatives. (Machine-translation by Google Translate, not legally binding) | |
| GB1203540A (en) | A process for manufacturing 6-nitro-2-oximinohexanoic acid and derivatives thereof | |
| GB1095865A (en) | Improvements in or relating to methods of supplying raw waters to, and protecting steam and superheated-water generations, and products utilized to this end | |
| ES331797A1 (en) | Procedure for the preparation of alynatic aminonitrils. (Machine-translation by Google Translate, not legally binding) | |
| FR1182261A (en) | Process for removing water from aqueous suspensions such as wastewater | |
| GB990275A (en) | Hardening of proteinaceous materials | |
| GB1142429A (en) | Corrosion inhibiting compositions and process | |
| GB932655A (en) | Improvements in or relating to the manufacture of amides | |
| FR1605228A (en) | 1-methyl-2-isopropyl-5-nitroimidazole for treating turkey blackhead an - ti-protozoal | |
| GB1443406A (en) | Purification of coumarin and alkylated derivatives thereof | |
| GB1080830A (en) | Process for the preparation of ª,ª-dithiols | |
| GB1022733A (en) | Triaminobenzene | |
| GB1414867A (en) | Production of 3-nitro-p-cresol-1 | |
| ES297346A1 (en) | A method for preparing a urea compound (Machine-translation by Google Translate, not legally binding) | |
| GB989926A (en) | New hydroxy amino acid and salts thereof | |
| GB952636A (en) | Production of 6.8-dithiooctanamides | |
| GB873800A (en) | Improvements in or relating to a method of combating slime-forming micro-organisms in industrial water | |
| GB1089825A (en) | Process for obtaining amino-guanidine bicarbonate | |
| ES258419A1 (en) | Procedure for the manufacture of mono and dihydrazinotriazines (Machine-translation by Google Translate, not legally binding) | |
| ES378488A1 (en) | A method of preventing precipitation from aqueous solutions of aminocarboxylic acids |