http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DD-146690-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_db11bcbb08be22ccd9174a5dfdd7f899 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_8d5d8567532dc53d3887b41f9978558e |
| classificationIPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03C7-32 |
| filingDate | 1979-10-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_431a15c0b792421ce1ffe456f4c896b4 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2b5810cf2e09b203e76d22b23ffcc47b |
| publicationDate | 1981-02-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | DD-146690-A1 |
| titleOfInvention | PROCESS FOR CLEANING COLOR COUPLER SOLUTIONS BY MEANS OF SEMIPERMEABLER MEMBRANES |
| abstract | The invention can be used in the purification of color couplers used in color films. The aim of the invention is to simplify the cleaning process by lowering the material, energy and labor costs with improved cleaning effect. The solution of the color coupler is diafiltered under a pressure of 0.1 to 2 M Pa through an ultrafiltration membrane with a pore diameter of 0, 04 to 1 micro. The impurities pass through the membrane with the filtrate, depending on the retention capacity. The invention takes advantage of the fact that the color couplers tend to diffuse diffusely, their tendency to form micelles and the formation of secondary or liquid membranes on the semipermeable membrane. The advantages of the proposed method lie in the low energy and labor costs and in the optimal control compared to the traditional achievable higher yields. |
| priorityDate | 1979-10-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 16.