http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4422974-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_7c55d2673c544222e80609309a862cf8 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07J9-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07J9-00 |
| filingDate | 1982-07-08^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1983-12-27^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d939a969cc6c6d5845ec9723daa72c4c |
| publicationDate | 1983-12-27^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-4422974-A |
| titleOfInvention | Process for the purification of β-sitosterol isolated from the unsaponifiables in crude soap from the sulphate cellulose process |
| abstract | The invention relates to a process for the preparation of beta -sitosterol having a low content of alpha -sitosterol of a sterol mixture isolated from the unsaponifiables obtained from crude soap from the sulphate cellulose process. The invention is based on crystallization of the sterol mixture from a mixture of an organic solvent and water, preferably 1,2-dichloroethylene or methyl ethyl ketone and water. By means of the process according to the invention, from starting materials containing 20 to 25% alpha -sitosterol is obtained a product which contains less than 5% alpha -sitosterol and which, when required, can be retreated by means of the process according to the invention to obtain beta -sitosterol containing less than 1% alpha -sitosterol. When using methyl ethyl ketone as organic solvent, beta -sitosterol is also purified of any betulin contained in the starting material. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0783514-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5097012-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6979743-B1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-0105807-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-0047570-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0783514-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2004267032-A1 |
| priorityDate | 1981-07-21^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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