http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-105669744-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07F9-3808 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07F9-38 |
| filingDate | 2016-02-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2017-09-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2017-09-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-105669744-B |
| titleOfInvention | A kind of green synthesis process of PMIDA |
| abstract | The present invention relates to a kind of green synthesis process of PMIDA, belong to PMIDA preparing technical field.The technique of the present invention is the mixed liquor using iminodiacetic acid (salt) sodium-salt aqueous solution and phosphite acid solution as material liquid；Hydrogen chloride gas is first passed through into material liquid, absorbing liquid is obtained；Then formaldehyde is added into absorbing liquid and carries out condensation reaction.The present invention into iminodiacetic acid and phosphorous acid mixed solution before condensation by being passed through hydrogen chloride gas to reduce content of water in system.Before formaldehyde condensation is added dropwise, by the input amount for adjusting IDA solids and iminodiacetic acid sodium salting liquid, and hydrogen chloride gas is directly sucked in when IDA prepares IDA hydrochlorides, make not having to introduce excessive water in system, to sum up avoid or reduce the dehydrating operations before formaldehyde is added dropwise；By adjusting iminodiacetic acid and phosphorous acid, the mol ratios of formaldehyde, realize that formaldehyde yield is maximized, while avoiding formaldehyde from excessively causing effect on environment, reduce environmental protection treatment expense. |
| priorityDate | 2016-02-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 36.