http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-3645674-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_56d89ecad9f8611b616fba72b15d713b |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B25-405 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C05B13-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B25-28 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B25-40 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C05B13-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B25-28 |
| filingDate | 1969-05-05^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1972-02-29^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e1fc0594dbac631073e5743cb7070db6 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d770e330202d46ecddd2775b9df31361 |
| publicationDate | 1972-02-29^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-3645674-A |
| titleOfInvention | Process for the manufacture of ammonium polyphosphate |
| abstract | Production of chain ammonium polyphosphates of the general formula (NH4)n 2PnO3n 1 by the reaction of a polyphosphoric acid with gaseous ammonia. Ammonium polyphosphates with a chain length n longer than that of the feed polyphosphoric acid are produced by heating a polyphosphoric acid with a P2O5-content higher than 76 weight percent to a temperature between 80* and 100* C.; introducing gaseous ammonia thereinto while arresting the supply of further heat; allowing the temperature in the reaction mixture to increase under the action of the heat of neutralization set free; maintaining the reaction mixture, if necessary by cooling, between 300* and 330* C. until the temperature itself commences to fall below 300* C; allowing the reaction mixture to stand at temperatures between 230* and 270* C., which are maintained, if necessary by supplying further heat, until formation of a viscous crystalline magma which practically ceases to absorb further ammonia; cooling the reaction product, washing it and drying it at temperatures lower than 100* C. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-104326451-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4268404-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4276273-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-3912802-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102139865-A |
| priorityDate | 1968-05-31^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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