http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-860326-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_78e5c3f06c9f1d9faca2789b247ce3a1 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C43-11 |
| filingDate | 1959-02-23^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1961-02-01^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-860326-A |
| titleOfInvention | Production of alpha-glycols |
| abstract | a -Glycols having from 5 to 20 carbon atoms in the molecule are prepared by contacting chlorine and a C5-C20 1-olefine in an acetate ion-donating medium under chlorination conditions to produce a crude reaction mixture which includes the dichloride, the chlorohydrin acetate, and the diacetate of the olefine; hydrolysing the crude reaction mixture in a confined zone at elevated temperature in the presence of an aqueous organic solvent, selected from acetone, dioxane, methyl ethyl ketone and tetrahydro-furan, and an acetate salt, the organic solvent being a solvent for the crude reaction mixture, water and the acetate salt; and thereafter recovering the resulting 1.2-glycol. Preferably the chlorination is carried out in a medium comprising acetic acid containing up to 20% by weight of water and sodium acetate at a temperature of 10-30 DEG C. In the hydrolysis step suitable acetates are, for example, those of sodium and potassium and the solvent advantageously contains 10-50% by volume of water. The hydrolysis is carried out at autogenous pressures and at a temperature of 200-250 DEG C. Examples are given of the preparation of 1,2-dihydroxydodecane, 1,2-dihydroxypentadecane, 1,2 - dihydroxyheptadecane, 1,2 - dihydroxyoctadecane, 1,2 - dihydroxynonadecane and 1,2-dihydroxyeicosane. |
| priorityDate | 1958-03-21^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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