http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-359953-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_da1a6cb268a4c99a9de6bf8d7eb3925d |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C2601-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C2602-42 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C29-92 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C41-44 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C37-86 |
| filingDate | 1930-07-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1931-10-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-359953-A |
| titleOfInvention | Improved process for the separation of alcohols and phenols from mixtures |
| abstract | Eugenol and acetyleugenol; terpenes; ketones; aldehydes; esters.-Monohydric alcohols, or monohydric phenols are separated from mixtures containing them by treating the mixtures with neutral esters of boric acid such as triethyl borate or tributyl borate, removing the other constituents by distillation, and liberating the alcohols or phenols by decomposing the residual borates, if necessary after a previous purification by crystallization. An approximate separation of different alcohols in the initial mixtures may be obtained by using only that quantity of boric ester required to combine with the more readily reacting alcohol. According to examples (1) thin oil is heated in vacuo with tributyl borate. Butyl alcohol distills over, followed by terpenes, camphor (which may be recovered), and finally excess of tributyl borate. The residual mixture containing trilinalyl borate and some dilinalyl borate is decomposed with sodium carbonate solution, and on steam distillation of the oil, linalol is obtained, (2) dehydrated Java citronell oil is distilled with triethyl borate. Small quantities of terpenes and methyl heptenone distil over first, followed by citronellal, cetral, esters, and sesquiterpenes. The boric ester residue is decomposed with hot water, and on fractional distillation yields isopulegol, d-citronellol, geraniol, eugenol, sesquiterpene alcohols (elemol and cadinol), and heavy terpenes, (3) fusel oil produced in the manufacture of cellulose from coniferous wood is distilled with triethyl borate at atmospheric pressure. Methyl, ethyl, propyl, and isopropyl alcohols distil over. On continuing the distillation in vacuo triethyl borate, monohydric alcohols, and triisobutyl borate come over successively. The residue containing triisoboruyl borate is decomposed with hot water, and l-borneol obtained by distilling the oil obtained in vacuo, (4) a mixture of benzyl alcohol and benzyl acetate are distilled with triethyl borate, and when the acetate has been driven off, benzyl alcohol is obtained from the residue as before, and (5) Madagascar oil of cloves is distilled with triethyl borate, the distillate containing methyl benzoate, methyl eugenol, ketones, caryophyllene, and acetyl eugenol. The residue when treated as in example (2) yields eugenol. The Specification as open to inspection under Sect. 91 (3) (a) comprises also the use of neutral esters of antimonious or phosphorus acids for effecting the separation. This subject-matter does not appear in the Specification as accepted. |
| priorityDate | 1929-08-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
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Total number of triples: 80.