http://rdf.ncbi.nlm.nih.gov/pubchem/patent/ES-350322-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_171f980d7cd1fe54aa78224dbe7f216d |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C67-54 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D3-38 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C69-80 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C69-34 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D3-38 |
| filingDate | 1968-02-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1969-04-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | ES-350322-A1 |
| titleOfInvention | HEAVY ESTERS PURIFICATION PROCEDURE. |
| abstract | The invention relates to a process of purifying high-boiling esters (boiling above 250 C.) obtained by esterifying an acid or acid anhydride with a molar excess of an alcohol having at least 4 carbon atoms followed by neutralizing and washing with water. According to the invention the esters so obtained are stripped with superheated steam and/or a hot vehicle gas by a process effected in at least two stages under successively decreasing pressures. Thus, the process may comprise a first stripping effected under atmospheric or moderately raised pressure. a second stripping under moderate vacuum and a third stripping under high vacuum, or the second or third stripping may be omitted. Specified esters which may be treated include di-decyl phthalate, di-tridecyl phthalate, di-n-butyl phthalate, dihexyl phthalate, dioctyl phthalate and di-2-ethyl hexyl sebacate. Apparatus is described and examples are given. Specification 934,027 is referred to. |
| priorityDate | 1967-02-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 30.