http://rdf.ncbi.nlm.nih.gov/pubchem/patent/SU-1617326-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_e36bb750ac0fe44e79f76535dcbd2ec2 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N21-27 |
| filingDate | 1987-11-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1990-12-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6c674f946b67e37bf7ee85191198363b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9a664b4bea6fcf5ebac04889e14de598 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4b5d647ac0df4bf3150cc7497cf7f962 |
| publicationDate | 1990-12-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | SU-1617326-A1 |
| titleOfInvention | Method of quantitative determination of polymethacrylic acid in solutions |
| abstract | This invention relates to the field of polymer chemistry and can be used in analytical chemistry. The invention improves the detection sensitivity up to 0.006 mg and increases the detection accuracy (relative measurement error 1-4%), which is achieved by treating the sample being analyzed with an alkaline solution of phenolphthalein with a PH of 9.45-9.50, measuring the optical density of the solution at 550 nm in the presence of indifferent electrolyte NACL and the subsequent calculation of the amount of acid using a calibration curve having the formula A = 0.835-0.674X, where A is optical density, X is the amount of acid, mg. 1 tab. |
| priorityDate | 1987-11-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 21.