http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-1106983-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_8efbae6056f7ee0275c50b0f1e7243be |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C25F7-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C25D21-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C25D21-16 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C25D21-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C25D21-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C25F7-02 |
| filingDate | 1965-07-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1968-03-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-1106983-A |
| titleOfInvention | Improvements in or relating to metal treating baths |
| abstract | Alkaline metal treating baths, e.g. cyanide copper, zinc, brass, cadmium or silver electro-plating baths, stannate tin or zincate zinc electro-plating baths cathodic cleaning baths for brass and copper containing caustic soda, soda ash, sodium metasilicate and trisodium phosphate, and anodic cleaning baths for steel containing soap, sodium aluminate, soda ash and sodium metasilicate, which have become contaminated with hexavalent chromium, are decontaminated by reducing the chromium to a lower valency state by adding at least one polyhydroxy aromatic compound containing hydroxy groups ortho or para to one another. The preferred compounds are di- or tri-hydroxy derivatives of benzene or naphthalene, numerous examples being mentioned. These compounds may be added in solid form together with inert diluents or materials adding a desired property to the bath e.g. wetting agents, plating bath brighteners. Among diluent materials specified are sugars, Rochelle salt and glyconic acids. |
| priorityDate | 1964-07-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 51.