http://rdf.ncbi.nlm.nih.gov/pubchem/patent/ES-2639062-T3
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_8e0bf0928b608797b70bbc2b91c7e52e |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G69-265 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G69-28 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G69-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G69-26 |
| filingDate | 2010-12-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2017-10-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_986ca703b0812313647361fab5ac14c4 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0e616b25972ad9d8785491cff7b218e7 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9f240d2017ef34f9d64a8859e652058c http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_32ad24d7fdb949376a50556bfc66f27c http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a1c81e583e4ad1fa31fe82c841a1c0d8 |
| publicationDate | 2017-10-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | ES-2639062-T3 |
| titleOfInvention | Process for the preparation of polyamides |
| abstract | Process for the preparation of a polyamide based on dicarboxylic acids and diamines consisting of the steps of: A) Provide a mixture of aqueous monomers of dicarboxylic acids and diamines, wherein the molar ratio of dicarboxylic acids to diamines is adjusted such that at the end of step C) there is a molar deficiency of dicarboxylic acids or diamines of between 1 and 10 mol%, based on the other respective component, B) Transfer the aqueous mixture from step A) to an operating evaporation reactor continuous, in which the diamines and carboxylic acids are reacted at a temperature in the range between 100 and 370 ° C and a pressure in the range between 1 and 50 bar, C) Transfer the mixture from step B) to a separator , which is operated at a temperature in the range between 100 and 370 ° C and at a pressure in the range between 1 and 50 bar, with separation of the gaseous components, D) Transfer the mixture from step C) together with diamine or acid dicarboxy In a suitable quantity to balance the molar excess, to a tubular reactor, which is operated at a temperature in the range between 100 and 370 ° C and at a pressure in the range between 1 and 50 bar, during a residence time in the range between 10 seconds and 30 minutes, E) Transfer the mixture from step D) to an extruder, which is operated at a temperature in the range between 150 and 400 ° C, during a residence time in the range between 10 seconds and 30 minutes, while the gaseous components are separated through degassing holes, wherein the monomer mixture of step A) consists of a mixture of dicarboxylic acids of between 60 and 88% by weight of terephthalic acid and between 12 and 40% by weight of isosphthalic acid, where up to 20% by weight of the carboxylic acid mixture can also be replaced by other dicarboxylic acids, and hexamethylene diamine, of which up to 20% by weight can be replaced by others C2-30-diamines. |
| priorityDate | 2009-12-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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