http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-105916906-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_a2973a1bdaf87d5184fb1e81ebe5d061 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L2201-02 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G2-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08K3-24 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G2-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G2-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G2-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L59-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G2-28 |
| filingDate | 2014-12-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_398d0adab68a21b8ceb7933cd871d825 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9cb0897a948a5ed01313be5e033a1045 |
| publicationDate | 2016-08-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-105916906-A |
| titleOfInvention | Process for producing polyacetal copolymer |
| abstract | A process for producing a polyacetal copolymer, the process making catalyst deactivation easy and efficient, requiring no cleaning step, merely requiring simple equipment and simple operation techniques, and rendering a high polymerization yield and high quality possible. In the invention, trioxane as a major monomer (a) is copolymerized with one or more comonomers (b) that are a cyclic ether and/or cyclic formal having at least one carbon-carbon bond, using a nonvolatile protonic acid as a polymerization catalyst (c) at a polymerization environment temperature of 100 DEG C or lower until the conversion reaches 50% and thereafter at a polymerization environment temperature in the range of 115 DEG C to 140 DEG C. This process includes: a crushing step in which a dry-process crusher is used to obtain a crude polyacetal copolymer (d2) crushed to such a degree that when the crude copolymer (d2) is screened with a sieve having an opening size of 11.2 mm, 90 parts by weight or more thereof passes therethrough; and a deactivation step in which a basic compound (e) is added to the ingredient (d2) and the mixture is melt-kneaded to thereby deactivate the ingredient (c). |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-110885415-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-110885415-B http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-113061220-B http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-113061220-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-112143164-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-112143164-B http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-112442252-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-112442252-B |
| priorityDate | 2014-03-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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