| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_ad2cd796f8c4dcb425ddcc68707d3444 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G2261-63 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B29B7-002
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G69-265
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B29B7-86
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G69-28
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G69-04 |
| classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B29C48-76 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G69-28
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G69-04 |
| filingDate |
2010-03-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_cb1718b45342a86c3507ccc482c9fb88
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_06fe0de2785ecde0ad7650a4a43e9f8f
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_837f82910425f2089fe5c28be17dbb12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_46aa6840b0f6abe1c8ea5c4dedc0dd62
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_bdb5064f4bff0b008d24d790a585659c
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f9d96e539baf4e4a05f2ac8c8ebf7eaa |
| publicationDate |
2010-05-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
JP-2010116575-A |
| titleOfInvention |
Continuous production method of polyamide |
| abstract |
PROBLEM TO BE SOLVED: To provide a continuous production method of polyamide having a stable degree of polymerization and good quality. (A) A raw material preparation step in which a diamine and a dicarboxylic acid are separately melted or a salt of an amine and a carboxylic acid is formed in water, and (b) the raw material is continuously fed to a tubular reactor. (C) an amidation step for performing amidation by passing the introduced raw material through a tubular reactor to obtain a reaction mixture containing an amidation product and condensed water; and (d) An initial polymerization step in which the reaction mixture is introduced into a continuous reactor capable of separating and removing water, and the degree of polymerization is increased while separating and removing water at a temperature equal to or higher than the melting point of the finally obtained polyamide to obtain a polyamide prepolymer; (E) The polyamide prepolymer is introduced into a continuous reactor capable of separating and removing water, and the degree of polymerization is further increased at a temperature equal to or higher than the melting point of the finally obtained polyamide to obtain a desired relative viscosity [RV]. Get a good polyamide The method of continuous production polyamides containing a final polymerization step. [Selection] Figure 1 |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2016141698-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10676569-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2016521790-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2016521789-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2016528312-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2021049266-A1 |
| priorityDate |
2002-08-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |