| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_3e67834d3ee31bc1fca6f2541c1b5c57 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F216-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61K6-887 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F16-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F222-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F216-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61K6-083
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F20-02 |
| filingDate |
1990-03-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_006cf41c22db8710626848bebb8d4793
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6c17e554043b30a66f8d80878d9e7fad |
| publicationDate |
1990-10-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
WO-9012036-A1 |
| titleOfInvention |
High solids copolymerization process of maleic anhydride and alkyl vinyl ether |
| abstract |
What is described herein is a solution feed, slurry precipitation polymerization process for making copolymers of maleic anhydride and an alkyl vinyl ether within a predetermined viscosity range. The process of the invention is characterized by precharging a large excess of the alkyl vinyl ether in a reactor, feeding maleic anhydride dissolved in a minimum amount of an organic solvent into the precharged reactor, and polymerizing the monomers in the presence of a free radical initiator. The copolymer product then appears as a pumpable slurry in the reaction medium. The slurry is discharged from the reactor and the desired copolymer is obtained therefrom as a fine, white powder having specific viscosities in the range of about 1.5-6.0, and preferably about 2.6-3.5. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6800696-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6881803-B2 |
| priorityDate |
1989-04-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |