http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-20140106527-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_95585944cd76ddfb6dc33ed2a0b84403 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G77-448 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G64-24 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G64-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G64-186 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L69-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L83-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G77-448 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G64-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G64-40 |
| filingDate | 2012-11-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_cce8fef4b85f64f8d431e764138f06e6 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ef7a1cad7ed2a934043de172cf75ae9d http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ea16d4052f96958a960684aeb6b79785 |
| publicationDate | 2014-09-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | KR-20140106527-A |
| titleOfInvention | Method for continuous production of polycarbonate-polyorganosiloxane copolymer |
| abstract | To provide a method for producing polycarbonate-polyorganosiloxane copolymers economically and stably. Concretely, there are a step (A) of continuously or intermittently withdrawing a polymerization reaction liquid obtained by polymerizing a divalent phenol compound, a carbonate precursor and a polyorganosiloxane in the presence of an alkaline compound aqueous solution and a water-insoluble organic solvent, Soluble organic solvent phase separated in step (B) and step (B) of separating the polymerization reaction liquid taken out from the aqueous phase (A) into an aqueous phase and a non-aqueous organic solvent phase is washed with an acidic aqueous solution, (C), wherein the content of the polycarbonate-polyorganosiloxane copolymer in the aqueous phase separated in the step (C) is 2 mass% % Or less, and a part of the extract obtained by extracting the water phase separated in the step (C) with a water-insoluble organic solvent Wherein all of the recycled polycarbonate-polyorganosiloxane copolymer is recycled to the step (A). |
| priorityDate | 2011-12-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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