http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-2000847-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d669af06cb2abbcd6823699582a97002 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N21-3577 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N21-3577 |
| filingDate | 1970-01-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a91f9d2c51a13e6f7fe53c62658612bf http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_dc6ae037e3901104a8ea8cb6ad2bbcf6 |
| publicationDate | 1971-07-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | DE-2000847-A1 |
| titleOfInvention | Procedure for the routine determination of the free silanol groups in pyrogenic silicas |
| abstract | A sample of silicic acid is converted to a clear stable homogenous suspension, using a liquid with a similar refractive index. The IR-spectrum of the silicic acid is taken by a spectral photometer, using a volume of the suspension, which contains a defined amount of silicic acid. The concentratin of the silanol groups is determined from the maximum extinction of the pattern, which is at approx. 3700 cm-1 according to the base line procedure. Exact and fast information about previously difficult to determine free silanol groups is provided. |
| priorityDate | 1970-01-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 23.