http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-20000076336-A
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C25D3-38 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C25D3-38 |
| filingDate | 1998-03-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2000-12-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | KR-20000076336-A |
| titleOfInvention | Cyanide-free monovalent copper electroplating solutions |
| abstract | The cyanide plating solution for precipitating copper in the monovalent ion state includes a copper ion source, a reducing agent for reducing divalent copper ions to monovalent copper ions, an alkaline substance for maintaining a pH of 7 to 10, and succinimide, 3- Such as methyl-3-ethyl succinimide, 3-methyl succinimide, 3-ethyl succinimide, 3,3,4,4-tetramethyl succinimide, or 3,3,4-trimethyl succinimide Complexing agents selected from hydantoin, such as amide or dimethyl hydantoin. The heavy sulfide plating solution may include a conductive salt, a brightness enhancing additive, or an alloy metal. The reducing agent is alkali sulfite, bisulfite alkali, hydroxylamine or hydrazine. Copper is provided in the form of CuCl, CuCl 2 , CuSO 4 or Cu 2 O and is present in an amount of 2 to 30 grams per liter of solution, and the complexing agent has a molar ratio of copper ions to complexing agent of 1: 1 to 1: 5, Especially in amounts of 1: 4. Alkaline materials are NaoH, KOH, NH 4 OH or Na 2 CO 3 and conductive salts are NaCl, KCl, Na 2 SO 4 , K 4 P 2 O 7 , Na 3 PO 4 , C 6 H 11 NaO 7 , NH 4 Cl Or KNaC 4 H 4 O 6 . Useful additives are organic amines or oxyalkyl polyamines such as triethylene tetramine, tetraethylene pentamine, and polyoxypropyl-triamine. A method of plating copper onto a substrate using such a solution and a method of preparing a solution for plating copper on a substrate are also disclosed. |
| priorityDate | 1997-03-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 88.