| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0a3232026a4c6657da1e1db78e273f79
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0e21fe2f7942a22dfe1786608c4ca6ee
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_33c95ba5db4e7ef7506d70e803cd1a4e
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_01e3e2a49c68d3c4a7a95b19737fe4f0
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_abead09a80eab9c45493aa1682ce8b19
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0b3fbc53ea95e04d35749544749bf260
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_a60b870505295507f668b6c6d6468d39
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/C08G69-26
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G69-28
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L77-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L77-06 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G69-26 |
| filingDate |
2008-06-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2014-06-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b04201704cb55108269407f5b3ec2b6c
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_64cff034ebc921137c5bd0d61da4ace1
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_39576911d61f96222468afb83604b5c2
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d56deb1fc11344812437f68cb0ae2f94
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ac5074285910e69837abadad831ea9d6
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c2fc0d67a993ab7bd01c262c69b13d3d
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5ec0bf1b3d1f95d614f939ca272da27d |
| publicationDate |
2014-06-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-8759476-B2 |
| titleOfInvention |
Method for producing polyamides |
| abstract |
The process for preparing a polyamide based on dicarboxylic acids and diamines has the following stages:n 1) providing an aqueous monomer mixture of dicarboxylic acids and diamines, the molar ratio of dicarboxylic acids to diamines being adjusted such that a molar deficiency of dicarboxylic acids or diamines of from 1 to 10 mol % is present at the outlet of stage 3), based on the other component in each case, 2) transferring the aqueous mixture from stage 1) to a continuous evaporator reactor in which diamines and dicarboxylic acids are reacted at a temperature in the range from 100 to 370° C. and a pressure in the range from 1 to 50 bar, 3) transferring the mixture from stage 2) to a separator which is operated at a temperature in the range from 100 to 370° C. with removal of gaseous components, 4) transferring the mixture from stage 3) together with diamine or dicarboxylic acid in an amount suitable to balance out the molar deficiency into an extruder which is operated at a temperature in the range from 150 to 400° C. for a residence time in the range from 10 seconds to 30 minutes to remove gaseous components through devolatilizing orifices. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10351671-B2 |
| priorityDate |
2007-06-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |