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classificationCPCInventive http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G69-16
classificationIPCInventive http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G69-16
filingDate 2001-04-17-04:00^^<http://www.w3.org/2001/XMLSchema#date>
inventor http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1f5582dafba76ae0f862e6755f512a95
publicationDate 2003-01-15-04:00^^<http://www.w3.org/2001/XMLSchema#date>
publicationNumber EP-1274767-A1
titleOfInvention Process for the simultaneous preparation of polyamides with at least two different viscosities
abstract A process for the simultaneous preparation of polyamide-6 with at least two different viscosities comprising prepolymerisation of ε-caprolactam and/or other polyamide-6 precursors in the presence of water, wherein at least part of the necessary water is supplied to the prepolymerisation via the gas phase and the obtained prepolymer is progressively moved and treated with an inert gas in at least two condensation reaction zones or reactors, placed in series, and the prepolymerisation and condensation are carried out in reactor(s) or reaction zones having a self-renewing interface between molten phase and gas phase with a large surface/volume ratio of the molten phase and the molten phase is relatively strong mixed.
priorityDate 2000-04-21-04:00^^<http://www.w3.org/2001/XMLSchema#date>
type http://data.epo.org/linked-data/def/patent/Publication

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