http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-103194549-B
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_111b161a9522dd387ad81ccacd52c05c |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C14C3-08 |
| filingDate | 2013-04-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2015-07-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e26beaf2eff2e9e3463cbd13d340c904 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0af3aca7f5879136c9fb1d8b4bbf90bc http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1223fc2ef5021874199e476fe11dc9e4 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_208c2342d4fe63f06dabc022eb792d44 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1bea9d438fc6dff1b496894e2356064d |
| publicationDate | 2015-07-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-103194549-B |
| titleOfInvention | Method for preparing chromium-aluminum tanning agent by utilizing chromium-containing aluminum mud and optional chromic chromate waste residues |
| abstract | The invention provides a method for preparing a chromium-aluminum tanning agent. The method comprises the following steps of: a) dissolving chromium-containing aluminum mud and optional chromic chromate waste residues by sulfuric acid; b) adding a chelating agent to the acid-soluble mixture obtained in step a), wherein the chelating agent is on the basis of the chromium-containing aluminum mud, and the chelating agent contains 0.15 to 0.45wt% of chromic chromate waste residues based on the total weight when in use; and c) adding a reducing agent to the mixed system obtained in step b), wherein the reducing agent is capable of reducing hexavalent chromium into trivalent chromium; adding a flocculating agent after reducing 65 to 95% of hexavalent chromium; and then adding sufficient reducing agents to reduce the rest hexavalent chromium into trivalent chromium. The method is simple and clear in technological processes; the whole reaction process is free from heating and filter pressing, thus lots of energies can be saved, the production period can be decreased; in addition, the prepared chromium-aluminum tanning agent shows uniform color on a blue pelt while being applied to tanning, and no flaw and yellow spots appear; and the chromium-aluminum tanning agent is specifically suitable for being used for tanning a light-color leather. |
| priorityDate | 2013-04-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 64.