| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_33dafb5bbc2ec47ebcb7becbbe60f704 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2800-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2810-50 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F210-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F210-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J5-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B32B27-32
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F8-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F218-08 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B32B27-32
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F210-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F210-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F8-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F218-08 |
| filingDate |
2001-10-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2004-04-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_710efecc292ee8c623506993189f3545 |
| publicationDate |
2004-04-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-6716934-B2 |
| titleOfInvention |
Method for producing ethylene-vinyl acetate copolymer, saponified product of copolymer prepared by the method, and molded product containing the same |
| abstract |
The present invention provides a method for producing an ethylene-vinyl acetate copolymer (EVA) containing 5 mol % to 60 mol % of ethylene, by copolymerizing ethylene and vinyl acetate with a polymerization initiator, in which an aliphatic alcohol having not more than four carbon atoms is used as the polymerization solvent, the contents of acetaldehyde and a saturated acetic ester with respect to vinyl acetate are not more than 200 ppm, and 10 ppm to 1500 ppm, respectively, and polymerization is carried out at a temperature of 30° C. to 150° C. EVA obtained by the foregoing method may be saponified to obtain a saponified ethylene-vinyl acetate copolymer (EVOH). According to the present invention, at least one of (i) improved melt-extrusion stability, (ii) improved melt-moldability, (iii) reduced discoloration, and (iv) reduced gelation is achieved. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7405009-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2007154667-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2004146729-A1 |
| priorityDate |
2000-10-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |