| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_8e0bf0928b608797b70bbc2b91c7e52e |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G69-08 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G69-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G69-32
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G69-28
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L77-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D1-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G69-36
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L77-10 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-01
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G69-14 |
| filingDate |
2009-12-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_68aa959109eb64afeb922be2bb274715
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_58efa2241ac2c9152ecc4d47dc12e61d
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_46b69d8479735167b9edbf5863a157e5
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7169c53ca03a8113244f28aee1cac634
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1c1cc12bb1d84bad071a2c7512ad92d4 |
| publicationDate |
2011-10-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-2011245435-A1 |
| titleOfInvention |
Process for continuously preparing copolyamides from lactams and salts of diamines and dicarboxylic acids |
| abstract |
A process for continuously preparing copolyamides from lactams and salts of diamines and dicarboxylic acids, in which lactams together with salts of diamines and dicarboxylic acids are passed from the top downward through a vertical polymerization tube at polyamide-forming temperatures, which comprisesn a) intensively mixing an aqueous solution of lactams with salts of diamines and dicarboxylic acids under elevated pressure which is greater than the vapor pressure of the mixture which arises in a mixing apparatus at a temperature of from 80 to 300° C., b) feeding the mixture thus obtained to a heated helical tube evaporator in which a liquid phase and a vapor phase form at a temperature of from 140 to 300° C., a stream of water vapor and/or inert gas also being introduced into the mixture if appropriate upstream of the helical tube, c) removing the vapor phase formed in stage b) from the liquid phase and separating it in a column into water vapor and into organic components comprising diamines, dicarboxylic acids and lactams, and recycling the organic components into the polymerization, d) passing the liquid phase from the helical tube of stage b) mixed with the organic components of stage c) from the top downward through a vertical polymerization tube at polyamide-forming temperatures to obtain a copolyamide. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2022112031-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/AU-2017349166-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2755359-C2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-102436695-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2017076784-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2018077856-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-20190078600-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11351716-B2 |
| priorityDate |
2008-12-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |