http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-3131342-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_7442b6cce4e96d3dc4a380851e9224d8 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C23C18-36 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C23C18-36 |
| filingDate | 1981-08-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b35ccf578bf2f6174d24df3efa661fe7 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d42f70e871df999b906a3c4ad264918f http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a611287a7858bdea64541e31eb784057 |
| publicationDate | 1983-02-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | DE-3131342-A1 |
| titleOfInvention | "AMMONIA-FREE, ELECTRIC, NICKEL-PLATING BATH AND METHOD FOR NICKELING NON-CONDUCTORS" |
| abstract | An ammonia-free, electroless nickel-plating bath is proposed which has a high tolerance to the presence of palladium(II) ions. The bath consists of an aqueous solution which contains approximately from 0.025 to 0.2 mol/l of nickel ions, approximately from 0.1 to 0.5 mol/ l of hypophosphite ions, a non-amine, ammonia-free chelating agent (chelatant) for nickel ions in excess of the stoichiometric amount required for complexing the nickel ions, and a soluble amine in an amount which results in complexing of palladium(II) ions without significantly reducing the nickel deposition rate. In addition, an improved method for electroless nickel-plating of a dielectric (insulator, non-conductor) is proposed, which employs the bath according to the invention. Preferred non-amine, ammonia-free chelating agents are carboxylic acids and their salts, which can form a nickel complex having a Kf above approximately 10<2>. Said amines are able to form a palladium/amine complex with a Kf which is numerically greater than the Kf of the non-amine, ammonia-free chelatant/nickel complex. Examples for amines are ethylenediamine, triethanolamine, monoethanolamine and diethylenetriamine. |
| priorityDate | 1981-07-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 64.