http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4267392-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_4eacb0405869fef7a8f1c516085f2682 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C37-84 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C37-685 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C37-86 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C37-86 |
| filingDate | 1979-06-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1981-05-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0253b2f64e3d5d5097f1e63c603d198a |
| publicationDate | 1981-05-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-4267392-A |
| titleOfInvention | Process for obtaining para-cresol and meta-cresol from a mixture of methylated and ethylated phenols containing meta-para-cresol |
| abstract | Para-cresol and meta-cresol are separated from a mixture of methylated and ethylated phenols by a two-stage process wherein the para-cresol is preferentially complexed with one or more anhydrous or dehydrated inorganic salts selected from calcium bromide, lithium bromide, manganese bromide and magnesium chloride. Then the meta-cresol is successively preferentially complexed with calcium bromide from the mixture of methylated and ethylated phenols from which the para-cresol complex has been removed. The anhydrous or dehydrated inorganic salt is added to the mixture of methylated and ethylated phenols including para-cresol and meta-cresol in an amount to give a mole ratio of the salt to para-cresol in the mixture in the range of about 0.5 to one to about 1.5 to one. The para-cresol-salt complex is removed from the mixture of methylated and ethylated phenols and then decomposed to recover the para-cresol. The mixture of methylated and ethylated phenols including meta-cresol from which the para-cresol has been removed has added to it calcium bromide in an amount to give a mole ratio of calcium bromide to meta-cresol in the mixture in the range of about 0.5 to one to around 1.0 to one. The addition is performed in the presence of a non-aqueous solvent and at a temperature in the range of -10 DEG C. to about 40 DEG C. The meta-cresol-salt complex is separated from the second mixture of methylated and ethylated phenols and the complex is decomposed to produce a high purity meta-cresol. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4447658-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4499312-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4447654-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4469901-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4424381-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4423253-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4429169-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4496774-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4547596-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4479019-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4429168-A |
| priorityDate | 1979-06-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 116.