http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CA-2468979-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_ead90443277482e25bf91bfddef2b5a7 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G10-02 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G10-02 |
| filingDate | 2002-12-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_cf3c62a25ca59234c7371312472d4c03 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d6db5ba3e647a12c14bf161bd03e0417 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3fd9660093dc193e09af6128dc3d8ca8 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_558c0709bdb75251f65df927adf3861a http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1696f6167eae1e3f2e0fa75f4988ff4b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8311bd14b3125db2981046fd5f8bdeae http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_68cf7c026c60e4b451188b3ffe0d76c1 |
| publicationDate | 2003-07-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CA-2468979-A1 |
| titleOfInvention | Process for preparing aromatic oligomers |
| abstract | A process for production of aromatic oligomers by reacting a polycyclic aromatic compound with formaldehyde in the presence of an acid catalyst, by which an organic layer containing the oligomer and an aqueous layer containi ng the catalyst - which are difficultly separable by means of the prior art - c an be efficiently separated from each other by a simple method and a high-purit y aromatic oligomer can be recovered from the resulting organic layer lowered in the content of impurities. Specifically, a process for production of aromati c oligomers through phase separation of an aromatic oligomer reaction fluid obtained by condensing a polycyclic aromatic compound with formaldehyde in t he presence of an acid catalyst into an aqueous layer containing the catalyst a nd an organic layer containing the oligomer, which comprises adding an effectiv e amount of a surfactant selected from among nonionic ones and cationic ones a nd an alkali in such an amount as to neutralize 1 to 70 % of the acid catalyst to the aromatic oligomer reaction fluid prior to the phase separation to demulsify the emulsion phase, subjecting the resulting fluid to phase separation, and recovering the oligomer from the separated organic layer.</S DOAB> |
| priorityDate | 2001-12-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 45.