http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-H0812661-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_1d29f7ac2c7f9be9f7dae1a83bbb5c92 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B63-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B63-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D305-12 |
| filingDate | 1994-07-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d7ca706d5080b4ca9b6bf108ca376640 |
| publicationDate | 1996-01-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-H0812661-A |
| titleOfInvention | Method for purifying 2-oxetanone |
| abstract | (57) [Summary] [Structure] First, acid impurities such as acetic acid and acrylic acid anhydride contained in crude 2-oxetanone are treated with alkali metal alkoxides and / or alkaline earth metal alkoxides such as sodium ethoxide and magnesium methoxide. By neutralization and removal of the remaining alkali metal alkoxide and / or alkaline earth metal alkoxide, and a carboxylic acid compound having a boiling point higher than that of 2-oxetanone such as endomethylenetetrahydrophthalic anhydride and / or the carboxylic acid compound. A method for purifying 2-oxetanone, which comprises re-neutralizing and removing by the action of a carboxylic acid anhydride derived from, and finally distilling to obtain highly purified 2-oxetanone. [Effect] The purification method of the present invention is a method capable of reliably purifying 2-oxetanone containing various types of acid impurities at high yield. By using 2-oxetanone purified by the purification method of the present invention, it is possible to stably obtain a high molecular weight polyester having film forming ability and fiber forming ability and excellent physical properties. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7526629-B2 |
| priorityDate | 1994-07-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 137.