http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0493507-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_f76aab74ed312003383a8600e2edbd5b |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C23C22-38 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C23C22-38 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C23C22-30 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C23C22-34 |
| filingDate | 1990-09-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_64577e6c3b88e571f333ee307422436d http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8380681628d2fb51fa356a4c3f497f2c |
| publicationDate | 1992-07-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-0493507-A1 |
| titleOfInvention | COMPOSITION AND METHOD FOR CHROMATE GALVANIZED STEEL AND SIMILAR MATERIAL. |
| abstract | The resistance of steel objects with a chromated zinc surface, in particular plates and sheets, to the extraction of hexavalent chromium can be substantially increased using alkaline degreasing solutions used on chromated objects, using a composition aqueous acid chromatography containing (A) about 9.6 to about 96 g / L, expressed as its stoichiometric equivalent used as chromic acid, of total chromium; (B) about 2 to about 35 g / L of trivalent chromium ions; (C) about 1 to about 128 g / L of phosphate ions; and (D) about 0.3 to about g / L of fluorozirconate ions, the ratio of chromium in the aqueous acidic liquid composition being between about 0.41 and about 0.70, the weight ratio of chromic acid / fluorozirconate being between approximately 10 and approximately 40, and the PO4 / Cr + 3 ratio being greater than approximately 0.03, greater than or equal to approximately {(9.2) (the chromium ratio) - 4.0}, and less than or equal to about {(9.2) (the chromium ratio - 1.2}. The corrosion resistance of the coatings formed can be further improved if the chromating composition also contains about 0.1 to about 200 g / L of dispersed silica. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11591707-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10435806-B2 |
| priorityDate | 1989-09-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 42.