| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b81c3ecc9a3bd192c754216816991d8a
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_33dafb5bbc2ec47ebcb7becbbe60f704 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F4-7027
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2438-01
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F4-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J2531-025
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2500-03
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2500-01
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J2531-845
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08K5-235 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2-38
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F118-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F18-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F16-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J31-2234
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F8-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F6-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F6-02 |
| classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08K5-23 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F8-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F16-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F18-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J31-22
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F6-08 |
| filingDate |
2017-03-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2020-09-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8cff1fd3c6439d1bb63d6fac52027d9f
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8d147ff59287b5f5ab9729dc18a9183c
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8cbac262c81cf466cd3e5b01694fd07e
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_40a79012c4cd3120f9ad39a93ec8edb5
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_12a931643c0167217a0f964cc4d6de30
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c186c3f680808e571682db14bd132fac |
| publicationDate |
2020-09-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-10766978-B2 |
| titleOfInvention |
Polyvinyl alcohol and method for producing same |
| abstract |
A polyvinyl alcohol is produced in a method comprising: a polymerization step comprising polymerizing vinyl ester monomers by controlled radical polymerization in the presence of a radical initiator and an organic cobalt complex to obtain a polymer solution containing a polyvinyl ester; an extraction step comprising extracting a cobalt complex from the polymer solution by contacting an aqueous solution containing a water-soluble ligand with the polymer solution; and a saponification step comprising saponifying the polyvinyl ester after the extraction step to obtain a polyvinyl alcohol. A method for producing a polyvinyl alcohol is thus provided that has a narrow molecular weight distribution and a high number-average molecular weight with good hue and further good solubility in water. |
| priorityDate |
2016-03-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |