http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-254753-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_391d8856cfc3180a696daa436ca9ff76 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C2601-14 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C37-52 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C29-20 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C37-52 |
| filingDate | 1926-07-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1928-08-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-254753-A |
| titleOfInvention | Process for the manufacture of alkylated phenols and their hydrogenated products |
| abstract | 254,753. Chemische Fabrik auf Actien vorm. E. Schering. July 4, 1925, [Convention date]. Alkyl phenols and cyclohexanols. - Alkyl phenols and cyclohexanols are obtained by the catalytic hydrogenation of the condensation products of a ketone with a phenol. The condensation product splits at the bridge between the phenolic residues and each component then takes up either one or seven atoms of hydrogen. Thus p-dioxydiphenyldimethylmethane yields either a mixture of p-isopropylphenol and phenol or a mixture of 4-isopropylcyclohexanol and cyclohexanol. The production of the alkyl phenols is effected with the aid of a catalyst comprising nickel or other hydrogenating catalyst mixed with bismuth, whilst the formation of the alkyl cyclohexanols requires a slightly higher temperature and a catalyst consisting of nickel or other hydrogenating catalyst to which manganese has been added. The use of pressure in either case is advantageous. Examples are also given of the hydrogenation under pressure of 4-dioxy-3-dimethyldiphenyldimethylmethane, obtained by the interaction of acetone and o-cresol in the presence of concentrated hydrochloric acid, whereby on the one hand a mixture of 2-methyl-4-isopropylphenol and o-cresol is obtained and on the other hand a mixture of 2-methyl-4-isopropylcyclohexanol and 2-methylcyclohexanol. Specification 252,594 is referred to. |
| priorityDate | 1925-07-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 40.