http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-1337445-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_21340d398ab8b54a66c7224851fe160f |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C25D3-22 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C25D3-22 |
| filingDate | 1971-04-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1973-11-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-1337445-A |
| titleOfInvention | Zinc electroplating |
| abstract | 1337445 Electro-plating with zinc UDYLITE CORP 19 April 1971 [18 March 1970] 24621/71 Heading C7B An aqueous zinc electro-plating bath, which is free from cyanide ions and has a pH of from 3À5 to 9À6, contains as brightening agents, (i) a linear polyether and (ii) a quaternary ammonium compound containing a quaternized heterocyclic nitrogen atom and having at least one carboxylic ester, carboxylic acid, nitrile, carboxamide or substituted carboxamide group. The bath may contain up to 250 g/l of an organic chelating agent for zinc. Suitable polyethers are polyethylene glycols, polypropylene glycols, mixed polymers of ethylene and propylene glycols, ethoxylated alkyl phenols and ethoxylated fatty alcohols. Suitable quaternary ammonium compounds are pyridine quaternary compounds which contain at least one of the groups defined at (ii) above, the compounds having been quaternarized with agents such as benzyl chloride, alkyl bromide and methyl or ethyl chloracetate, e.g. benzyl chloride quaternaries of methyl, ethyl and propyl nicotinate. Suitable organic chelating or sequestering agents are ethylene diamine tetraacetic acid, nitrilotriacetic acid, ethylene diamine tetraethanol, citric acid and ethylene diamine diacetic acid. The Zn in the bath may be contributed by zinc sulphate, chloride or fluoborate. The bath may also contain NH 4 Cl. The pH may be adjusted by NH 4 OH or HCl. Specified operating conditions are - a bath temperature of up to 60‹C; an average current density of 5 to 100 amps/sq. ft; and barrel and rack plating processes. |
| priorityDate | 1970-03-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 49.