http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-0077075-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_cfd348e5154cf8b0bcc8dc4f7d7355c5 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0464965e9d0761b6b3db5e740dded761 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_f4f51e9b091d853e6f3697599ea9f673 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_45f7bd5656ebc9d2b1990e70dc118c64 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G69-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G69-04 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G69-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G69-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G69-04 |
| filingDate | 2000-06-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a07ed32044efc21572fea07c79058f42 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b08fead76952d10148be2bbd7f595ffe |
| publicationDate | 2000-12-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | WO-0077075-A1 |
| titleOfInvention | Method for making polyamides |
| abstract | The invention concerns a method for making polyamide. More particularly, the invention concerns a method for making polyamides derived from the reaction between a diacid and a diamine. It concerns a method for making a polyamide derived from the reaction of at least a diacid with at least a polyamide comprising the following steps: preparing a first mixture of diacid and diamine with a diacid/diamine molar ratio ranging between 0.8 and 0.995, preferably ranging between 0.95 and 0.99 in a first reactor (5); preparing a second mixture of diacid and diamine with a diacid/diamine molar ratio ranging between 1.005 and 1.2, preferably between 1.01 and 1.05, in a second reactor (4); introducing in melted form a first flow of the first mixture and a second flow of the second mixture in a stirred polymer reactor (7); drawing, preferably, continuously, from said reactor a flow of polyamide prepolymer; feeding said polyamide flow into a finishing step to obtain the desired degree of polymerisation. The invention is characterised in that the stoichiometry of the polyamide in the reactor (7) or the acid function/amine function ratios in the different reactors are measured by near infrared spectrometric analysis, and by controlling the feed flows in the different reactors using the results of said analyses. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6610816-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1225191-A2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1225191-A3 |
| priorityDate | 1999-06-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 55.