http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-518775-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d66aced64b418a4f422589fa7eee73a2 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C323-00 |
| filingDate | 1938-09-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1940-03-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-518775-A |
| titleOfInvention | An improved manufacture of phenol sulphides |
| abstract | 518,775. Alkyl phenol sulphides. STANDARD OIL DEVELOPMENT CO. Sept. 1, 1938, No. 25600. Convention date, Dec. 4, 1937. [Class 2 (iii)] Alkyl phenol sulphides are prepared by heating an alkyl phenol with sulphur and an inorganic alkaline compound of an alkali metal, e.g., sodium carbonate, hydroxide or sulphide; in the presence of a non-aqueous inert solvent until the evolution of hydrogen sulphide ceases, and liberating the free alkyl phenol sulphide from the resultant solution of its alkali metal salt. The phenols may contain more than one alkyl group and more than one hydroxyl group. They preferably contain up to 8 carbon atoms in the alkyl group. Phenols mentioned are cresol, ethyl, propyl butyl, tert. butyl, amyl, tert. amyl, heptyl, hexyl, iso-octyl and di-iso-butyl phenols. Suitable inert solvents are those boiling above 130‹C., e.g., xylene, saturated hydrocarbons or hydrogenated compounds, glycermic or ethylene glycol. Molecular quantities of the various components are preferably used to obtain a mono- or poly-sulphide. The reaction is performed at 100-200‹C. and preferably at atmospheric temperature and with agitation. The sulphide may be purified by percolation, through clay or sodium carbonate. In an example para-tertiary butyl phenol, flowers of sulphur, and anhydrous sodium carbonate were heated in glycerol. After acidifications the butyl phenol sulphide was extracted with ether, dried with sodium sulphate and purified by distillation. |
| priorityDate | 1937-12-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 48.