http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2001081180-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_6c8d4dc7bd1a30d8fda907fceaeb4e69 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N21-359 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G65-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G65-30 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G65-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N21-35 |
| filingDate | 1999-09-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a670a5832fa49f6763e02f3e42068c09 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a9f287e3f2da9215c18b9cc30e1a40f2 |
| publicationDate | 2001-03-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-2001081180-A |
| titleOfInvention | Continuous production method of polyoxyalkylene glycol diester |
| abstract | (57) [Summary] (with correction) [PROBLEMS] A POA having a molecular weight aimed at a charged composition of a raw material by performing composition analysis of a recovered raw material without time delay. A method for continuously producing POAE in which E is adjusted to a composition that can be obtained at a target yield, and the reactor can be controlled as necessary. SOLUTION: A cyclic ether is polymerized in the presence of a solid acid catalyst and a carboxylic anhydride, and the unreacted starting materials, ie, the cyclic ether and the carboxylic anhydride, are separated from the polymerization reaction solution. In a method for continuously producing a polyoxyalkylene glycol diester by recycling the recovered unreacted raw material to the polymerization reaction system, a mixture of the unreacted cyclic ether and the carboxylic acid anhydride separated and recovered from the polymerization reaction solution. Analyze the composition by near-infrared spectrum, adjust the amount returned to the polymerization reaction system and the additional supply amount of new cyclic ether and carboxylic anhydride to the polymerization reaction system, and if necessary, polymerization temperature and / or residence time To adjust. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2014181327-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-7113994-B1 |
| priorityDate | 1999-09-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 53.