| Predicate |
Object |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2321-164
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2321-168
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D61-025
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2321-162 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C11D17-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D71-56
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D65-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D61-025
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C11D7-3272
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D65-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C11D7-32 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C11D17-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D71-56
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D65-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C11D7-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C11D7-04 |
| filingDate |
2014-10-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2016-04-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate |
2016-04-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
JP-5910696-B1 |
| titleOfInvention |
Reverse osmosis membrane cleaning agent, cleaning liquid, and cleaning method |
| abstract |
The present invention provides a cleaning agent, a cleaning liquid, and a method for cleaning an RO film with the cleaning liquid, which have an effect of suppressing a decrease in the RO membrane rejection rate due to cleaning. An RO membrane cleaning agent containing a urea derivative. As the urea derivative, urea (H 2 N—CO—NH 2 ) and biuret (H 2 N—CO—NH—CO—NH 2 ) are preferable. A cleaning solution comprising an aqueous solution obtained by diluting the cleaning agent. A method of cleaning the RO membrane using this cleaning solution. Urea and biuret have a structure close to the amide bond of the aromatic polyamide RO membrane, and have strong affinity with the amide bond part, and by adsorbing to the amide bond part, the cleavage of the amide bond by the washing solution is suppressed. . [Selection] Figure 2 |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-102157931-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-20190076243-A |
| priorityDate |
2014-10-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |