http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2014214225-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_a2973a1bdaf87d5184fb1e81ebe5d061 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G2-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G2-22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G4-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L59-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G2-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G2-24 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G2-10 |
| filingDate | 2013-04-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_88081a938a1b8a4deb25d3f28153016d http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_398d0adab68a21b8ceb7933cd871d825 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_163f9f4281967d632168405c95c1d2ab |
| publicationDate | 2014-11-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-2014214225-A |
| titleOfInvention | Process for producing polyacetal copolymer |
| abstract | A high quality polyacetal copolymer is economically provided by a simple process. The present invention provides a raw material supply step for supplying a raw material containing trioxane or the like to a reactor 1, and a polymerization environment temperature until the reactor conversion rate (D / C described later) reaches 0.5. The following is a polymerization reaction step in which further polymerization is performed to obtain a reaction mixture, a vaporization separation step in which unreacted monomers are vaporized and separated from the reaction mixture at an environmental temperature of 115 ° C. or more and less than 140 ° C., and An unreacted monomer resupply step for supplying to the raw material supply step, and a polyacetal copolymer recovery step for recovering the polyacetal copolymer from the reaction mixture. Thereby, the weight ratio D / of the polyacetal copolymer D to the total supply monomer C defined by the sum of the monomer A newly supplied to the reactor 1 and the monomer B recovered and resupplied from the reactor 1 C is 0.7 or more, and D / A is 0.85 or more. [Selection] Figure 1 |
| priorityDate | 2013-04-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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