http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-RE35958-E
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_f76aab74ed312003383a8600e2edbd5b |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C23C22-364 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C23C22-362 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C23C22-36 |
| filingDate | 1994-11-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1998-11-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5a3b4ccfc99441f922cbe8e1bbb787c1 |
| publicationDate | 1998-11-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-RE35958-E |
| titleOfInvention | Method of forming phosphate coating on zinc |
| abstract | Disclosed is an improved method for coating a zinc surface comprising treating said surface with an aqueous, acidic solution containing: (a) about 0.5 to about 4 percent phosphate ion; (b) an ion selected from the group consisting of zinc ions, manganese ions, and mixtures thereof, said ions being present at a level sufficient to form dihydrogen phosphate with substantially all of said phosphate ions; and (c) about 0.01 to about 1 percent complex fluoride ions; wherein the weight:weight ratio of complex fluoride ions:chloride ions in said solution is at a value of about 8:1 or greater. It is preferred that the ratio complex of fluoride ion to chloride ion (F-:Cl-) in said solution to be maintained at a value of greater than about 8:1, preferably greater than about 10:1, and more preferably greater than about 14:1. The select weight:weight complex fluoride:chloride ratio substantially eliminates the abnormal crystal growth frequently found in treated surfaces while at the same time reduces the need for excess fluoride. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2008314479-A1 |
| priorityDate | 1985-08-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 71.