| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0e5e37c55ff492dd0f59ba7e84e2346c |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10S534-03
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10S127-01 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09B5-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09B69-10 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B5-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B69-10 |
| filingDate |
1976-11-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1980-02-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3c84354da6ec2c0d3b79d43af8313553
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e4533deff53683b037c0704f6face2bb |
| publicationDate |
1980-02-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-4189380-A |
| titleOfInvention |
Salt addition in ultrafiltration purification of solutions of polymeric colorants |
| abstract |
The ultrafiltration purification of aqueous solutions of polymeric colorants, wherein low molecular weight impurities are removed in an ultrafiltrate leaving a purified polymeric colorant-bearing retentate, is carried out with improved efficiency when, during at least two diavolumes of ultrafiltration, the salt content of the retentate is maintained above about 1% by weight. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4560746-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6252123-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5954967-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4955987-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0445926-A2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4619990-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6045702-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2014065542-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9017921-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0445926-A3 |
| priorityDate |
1976-11-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |