http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-H02115230-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_be055db3c1a09879df07379ba969e223 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03G5-07 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G75-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G75-0286 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03G5-07 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G75-02 |
| filingDate | 1988-10-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c495898c05baeee3fe183f50940f0b93 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_30ae6a348ecffb23790fb2f7edbb981c |
| publicationDate | 1990-04-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-H02115230-A |
| titleOfInvention | Production of p-phenylene sulfide oligomer |
| abstract | PURPOSE:To obtain a high-MW oligomer easily in good yields by polymerizing diphenyl disulfide under specified conditions. CONSTITUTION:About 0.1M of diphenyl disulfide is dissolved in a reaction solvent (e.g., nitromethane) and at least 1mol, per mol of the disulfide, of a Lewis acid (e.g., antimony pentoxide) or an oxidizing agent (e.g., thionyl chloride) is added to the solution. The reaction is continued at room temperature for a time enough to saturate the degree of polymerization, namely, several hr to about 1 day, and the reaction mixture is poured into methanol to obtain an oligomer (degree of polymerization n>=5) of the formula. This oligomer is heated to 300 deg.C or above in the absence of any solvent in the presence of a radical generator (e.g., oxygen), and hot benzene is added to the oligomer after cooling. The product is ground into a slurry and cooled to room temperature, and benzene-insoluble matter is filtered off to obtain an oligomer (degree of polymerization n>=7) of the formula. |
| priorityDate | 1988-10-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 32.