http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2019536809-A
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C57-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-48 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-50 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C57-07 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-50 |
| filingDate | 2017-12-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2019-12-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-2019536809-A |
| titleOfInvention | Prevention method of polymer precipitation in purification method of (meth) acrylic acid |
| abstract | It is an object of the present invention to provide a system for purifying a crude reaction mixture of (meth) acrylic acid synthesis, particularly without facing fouling problems due to the presence of glyoxal formed during the synthesis process; To produce industrial (meth) acrylic acid. The present invention is based on the addition or formation of a quinoline derivative into a stream of glyoxal-containing (meth) acrylic acid during a purification step, wherein the quinoline derivative / glyoxal molar ratio is in the range of 0.1 to 5, The quinoline compound having one of (I) or (II), Wherein R 1 , R 2 , R 3 and R 4 independently represent a hydrogen atom or C 1 -C 6 , or R 1 and R 2 C-alkyl are combined, and Together with the atoms to which they are attached, they form a saturated or unsaturated ring or heterocycle, preferably a phenyl group, and / or R 3 and R 4 are combined and, together with the atoms to which they are attached, are saturated or unsaturated. To form a ring or heterocycle, preferably a phenyl group. |
| priorityDate | 2016-12-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 60.