http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5294652-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_dc87a1ea06877b5b991070f0a216acd0 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J47-018 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J47-016 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J41-09 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J45-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J41-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J47-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J45-00 |
| filingDate | 1993-02-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1994-03-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2ac33c11e17a2dbdb920b91c054352a9 |
| publicationDate | 1994-03-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-5294652-A |
| titleOfInvention | Process for recovering silver from photographic chemical effluent |
| abstract | A process for absorbing silver from photographic hypo solutions involves passing the hypo solution through a bed consisting of a multitude of a sponge product confined within a vessel. The sponge product is derived from an open-celled cellulosic sponge into which there has been incorporated 30% to 80% by weight of a polymer produced by the thermal interaction of polyethyleneimine (PEI) with a polycarboxylic acid. The polymer further contains an activating multivalent cation and between 90% and 300% water. Silver is eluted from the sponge product employing aqueous solutions of a complexing agent such as an ammonium compound or a cyanide compound. Following a water wash, the bed of sponge product is ready for its next cycle of silver absorption. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5552055-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2011011216-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6063286-A |
| priorityDate | 1991-12-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 32.