| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_e788e5b0794190c1aa6918c4a3995acc
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5de7fdc8ceaedd5f840dcc3dedab6e6c |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10T436-17
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N33-22
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10T436-25375
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10T436-25
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10T436-255
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N30-50
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N30-34
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N30-74 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08B5-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N30-8693
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N30-86
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N30-8668 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D15-08 |
| filingDate |
2011-07-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2014-02-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ff471daf51e50214cc5b1131a430b86d |
| publicationDate |
2014-02-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-8658428-B2 |
| titleOfInvention |
Methodology for determination of nitrogen content in nitrocellulose |
| abstract |
In at least one embodiment, the invention is directed to a method of determining the nitrogen content in nitrocellulose by High Performance Liquid Chromatography (HPLC). It is within the scope of the invention for the sample of nitrocellulose to be unstable nitrocellulose, unrefined nitrocellulose, or refined nitrocellulose. The sample of nitrocellulose can wet or dry. A sample of nitrocellulose that is wet can be in acid or in water. Before HPLC, the sample is dissolved in a suitable solvent. The nitrogen content of the sample is determined by comparing the retention time of the sample to a graph of retention time to amount of nitrogen due to the linear correlation of retention time and percent nitrogen substitution. |
| priorityDate |
2011-07-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |