http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CA-2007568-C
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_36c7e6417df7d3a93390112f3b4a70b5 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G69-26 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 | 1990-01-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1994-09-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_927af386a625d714567abafb15c43368 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0fd745b53a7164c3b38131a2b6ca2c31 |
| publicationDate | 1994-09-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CA-2007568-C |
| titleOfInvention | Process for preparing semi-aromatic polyamides containing residues of aromatic dicarboxylic acid(s) and of alkylpentamethylenediamine |
| abstract | The invention relates to a process for the preparation of (co) semi-aromatic amorphous or semi-crystalline polyamides from an acid reagent comprising at least one acid aromatic dicarboxylic having 8 to 18 carbon atoms, an amino reagent mainly comprising an alkyl-pentamethylenèdiamine and optionally a catalyst. According to this process, the reactants are polycondensed operating in an autoclave-type closed system according to a protocol comprising the following steps: step 1 of distillation of the water present in the reaction mass under constant autogenous pressure. A step 2 of decompression to atmospheric pressure and a step 3 finishing, making sure that some of the water is added initially to the reaction mass and other apart from the distillation from step 1 is carried out in special temperature conditions (temperature of start of distillation T1 between 160 ° C and 190 ° C) and autogenous pressure (between 0.5 and 1.2 MPa). Thanks in this process, the losses in amino reagent (by sequence in the distillates and by cyclization) are significant-reduced. |
| priorityDate | 1989-02-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 55.