http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-625674-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_94aafba413093babffa661ec0ca0c362 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C11B7-0058 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C11B7-0008 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C11B7-00 |
| filingDate | 1946-06-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1949-07-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-625674-A |
| titleOfInvention | Improvements in or relating to treatment of glyceride oils |
| abstract | Natural glyceride oils are extracted with a selective polar solvent for unsaturated glycerides and the extract is then subjected to a second extraction using a liquid paraffinic hydrocarbon as solvent in a ratio within a range of 1 to 10 parts hydrocarbon per part of oil, thereby separating the various materials present in the oil. The raffinate from the first extraction contains the relatively highly saturated glycerides together with gums, lecithin and phospholipids, while the raffinate from the second extraction contains free fatty acids and unsaponifiables such as sterols, inhibitols, tocopherols and vitamins. The extract from the second extraction contains the more highly unsaturated glycerides. Glyceride oils which may be treated include soyabean oil, linseed oil, cottonseed oil, menhaden oil, fish liver oils, tung oil, coconut oil and lard, while polar solvents mentioned are furfural, acetonyl acetone, methyl ether of ethylene glycol, ethyl acetoacetate, mixtures of nitromethane and nitroethane, and the polar solvents referred to in U.S.A. Specifications 2,200,390 and 2,200,391. In examples, cottonseed, soyabean or linseed oil is extracted with furfural saturated with naphtha, the extract is subjected to extraction with naphtha and, if desired, the extract from the second extraction is subjected to extraction with naphtha-saturated furfural in order further to reduce the free fatty acid content. Apparatus is shown in which the extractions are carried out with countercurrent flow of oil and solvent. The naphtha employed may be a mixture of heptanes and octanes having a boiling range between 293 DEG and 350 DEG F. In isolating the constituents of the raffinate from the second extraction (1) the furfural may be distilled off, the free acids saponified with alcoholic sodium or potassium hydroxide, the alcohol distilled off and the soaps dissolved in water; the unsaponifiable materials can then be dissolved out in petroleum naphtha or other solvent and the sterols may be crystallized from the naphtha, or (2) the raffinate may be Twitchellized, the fatty acids distilled off and the unsaponifiable residue worked up, or (3) the raffinate may be subjected to alcoholysis or other treatment to convert the fatty acids to esters of monohydric alcohols such as methyl alcohol, the esters distilled off and the unsaponifiable residue worked up. Specification 18137/47, as open to inspection under Sect. 91, is referred to. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2014078387-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9353331-B2 |
| priorityDate | 1945-08-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 49.