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/C08G2-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G2-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G2-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G65-266 |
classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G2-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G65-00 |
classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G2-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G2-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G2-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G2-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G65-26 |
filingDate |
2013-10-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
grantDate |
2017-05-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c37f3e4ea7b64ebb223ff3c769a7f1f9 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_398d0adab68a21b8ceb7933cd871d825 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9cb0897a948a5ed01313be5e033a1045 |
publicationDate |
2017-05-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
publicationNumber |
US-9657136-B2 |
titleOfInvention |
Production method for polyacetal copolymer |
abstract |
A production method for a polyacetal copolymer that makes deactivation of a catalyst simple and efficient and that achieves a high polymerization yield and high quality using equipment that does not require a cleaning step and a process that involves a simple operation technique. The production method for a polyacetal copolymer uses trioxane as a main monomer and a cyclic ether and/or a cyclic formal having at least one carbon-carbon bond as a comonomer. In the production method, a predetermined heteropoly acid is used as a polymerization catalyst to perform copolymerization, a predetermined salt is added to the reaction product, melt kneading processing is performed, and the polymerization catalyst is deactivated. |
priorityDate |
2012-11-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
type |
http://data.epo.org/linked-data/def/patent/Publication |