http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-4124149-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_e5ad8562c578b061df7a2c3aee9d0e24 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N27-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N27-121 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N27-126 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N27-12 |
| filingDate | 1991-07-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c49327e8317380e6d3834d99581bc6a8 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_348f3650e9911939fa81fde1c18bc53e http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a4f27be6f7d8a396ec348a2543aca44b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8940f4fcaa32487f38c283054b098046 |
| publicationDate | 1992-02-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | DE-4124149-A1 |
| titleOfInvention | HIGH MOLECULAR HUMIDITY SENSOR AND PRODUCTION THEREOF BY AN ELECTROCHEMICAL METHOD |
| abstract | High mol. moisture sensor has a polypyrrole film doped with dodecylsulphate (DS) anions. The polypyrrole is permeable for Na and K cations, with salt formation, and has a sensitivity for moisture in the 10 power (4) to 10 power (6) ohm region and detection speed between 10s and 5 mins. The sensor is produced by (a) adding an electrolyte soln. with pyrrole monomers to a soln. contg. DS anions during a polymerisation stage; (b) connecting a fine electrode with sensor structure as positive electrode and a Pt plate as negative electrode; (c) passing d.c., so that a doped polypyrrole film is deposited on the positive electrode and subjecting to a redn. stage in an aq. electrolyte contg. small Na and K cations; and (d) applying d.c. with reversed polarity so that the DS anions are retained in the polypyrrole and the Na and K ions permeate, with salt formation, and impart ion conductivity. The polymerisation electrolyte soln. consists of tetrabutylammonium DS (TBDA) in acetonitrile as aprotic solvent; or an aq. soln. of Na DS. The fine electrode is formed by applying alternating W and Ni films on a glass or Al2O3 base plate; structurising using a positive photoresist; plating with Au in the etched areas; and etching away the positive photoresist, Ni and W to form alternating long and short partial electrodes. Each partial electrode is 16 microns wide, with 5 micron wide gaps between the partial electrodes. ADVANTAGE - The sensor has excellent sensitivity and measuring speed. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6342295-B1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-19963188-A1 |
| priorityDate | 1990-07-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 50.