http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-969108-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_1e70c0aeade92d7571d955d3b90ea06e |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C50-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C23C22-03 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C37-07 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C46-06 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C50-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C23C22-03 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C37-07 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C46-06 |
| filingDate | 1962-08-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1964-09-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-969108-A |
| titleOfInvention | Stabilization of halohydrocarbons in a phosphatizing bath |
| abstract | Halohydrocarbon-containing phosphatizing baths for metals which include phosphoric acid and a phosphoric acid solubilizer such as an aliphatic alcohol having 3 to 8 carbon atoms and/or an alkyl acid phosphate thereof are stabilized by the inclusion of a quinone. The bath which is substantially anhydrous contains 0.001-5% by weight of quinone based on the weight of the halohydrocarbon, 0.05-7.5% of orthophosphoric acid by weight and 1-10% by weight of the aliphatic alcohol. The bath may also contain 0.01-5% by weight of a nitro aromatic, a nitroso aromatic or an azo aromatic compound. The halohydrocarbon may be tri-chlorethylene, perchlorethylene, difluorotetrachloroethane, trifluorotrichloroethane, dichlorotetrafluoroethane, dibromotetrafluoroethane, or trichlorofluoromethane. The quinone may be p-quinone, quinhydrone, 1,2-dihydroxyanthraquinone, 1,5-dihydroxyanthraquinone or the p-quinone-phosphoric acid addition obtained by reacting p-quinone with phosphoric acid. Specification 966,883 is referred to.ALSO:A phosphatizing bath for forming a phosphate coating on metal surfaces comprises a halohydrocarbon solvent, phosphoric acid, a phosphoric acid stabilizer such as an aliphatic alcohol having 3 to 8 carbon atoms and/or an alkyl acid phosphate thereof, and a quinone as a stabilizing agent. The bath which is substantially anhydrous contains 0.001-5% by weight of quinone based on the weight of the halohydrocarbon, 0.05-7.5% of orthophosphoric acid by weight and 1-10% by weight of the aliphatic alcohol. The bath may also contain 0.01-5% by weight of a nitro aromatic, a nitroso aromatic or an azo-aromatic compound. The halohydrocarbon may be trichlorethylene, perchlorethylene, trifluorotrichloroethane, difluorotetrachloroethane, dibromotetrafluoroethane, dichlorotetrafluoroethane or trichlorofluoromethane. The quinone may be p-quinone, quinhydrone, 1,2-dihydroxyanthraquinone, 1,5-dihydroxyanthraquinone or p-quinone-phosphoric acid addition product obtained by reacting p-quinone with phosphoric acid. Examples of treating ferrous material such as stainless steel are given. Specification 969,849 is referred to. |
| priorityDate | 1961-08-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
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