http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2022130008-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d93502a23a72b56472bc75854cfe7c60 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02W30-62 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B29C48-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B29B9-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B32B27-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B29C48-80 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J11-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B32B27-40 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B29C48-40 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B29B17-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B29C48-76 |
| filingDate | 2021-02-25^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2dd850933c756c2f6f13711f276f07cb |
| publicationDate | 2022-09-06^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-2022130008-A |
| titleOfInvention | Method for manufacturing optical film |
| abstract | An optical film containing an alicyclic structure-containing polymer is produced from a resin film comprising a layer containing an alicyclic structure-containing polymer and a layer containing an ether-based polyurethane or a carbonate-based polyurethane while suppressing coloration. To provide a manufacturing method that can be manufactured. A step of washing the resin film with an alkaline aqueous solution, a step of melt-kneading the resin film in a vented twin-screw extruder to obtain a molten resin, and a step of extruding the molten resin from the twin-screw extruder to produce a recycled resin. and the step of forming a recycled resin into a film; the step of melt-kneading includes the step of supplying water into the twin-screw extruder, and the step of degassing through a vent to discharge the water from the twin-screw extruder A production method comprising step (II-2); wherein the temperature of the molten resin in the vented portion of the twin-screw extruder is 260° C. or higher. [Selection drawing] Fig. 1 |
| priorityDate | 2021-02-25^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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