http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S63205391-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0e7b522b71fd001f1a633fd8563b2a3e |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-54 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B31-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C10C3-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C10C3-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C10C3-02 |
| filingDate | 1987-02-19^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2dfd89342e38e9993d2592610a96707e http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c88eccf7812dd807b2e6b34b1302e144 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_cc8e2680780742906e5c72366a8983d1 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2779e71d64e4e6141b6b1e553af86135 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_211ca89371a32c0858de76928082eecf http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f8babc2b0e8538a95cf3950bd34f46a7 |
| publicationDate | 1988-08-24^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-S63205391-A |
| titleOfInvention | Production of raw material for carbonaceous material |
| abstract | PURPOSE: To prepare a raw material for a cabonaceous material contg. a mesophase, by conducting particular two-step solvent extraction of pitch and heat treating the final solvent-insoluble matter. n CONSTITUTION: A first extraction treatment of stock pitch, e.g., coal tar pitch in stock, is conducted with cyclohexane as a first solvent under supercritical conditions. As a result, cyclohexane-soluble (low-boiling components) and cyclohexane-insoluble are obtd. A second extraction treatment of the insoluble is conducted with toluene or a mixed solvent comprised of toluene and quinoline as a second solvent under supercritical conditions. Finally, the second solvent- insoluble (mesophase precursor) obtd. by the second extraction treatment is heat treated (under atmospheric pressure at 450W480°C). The solvent-insoluble matter is converted into a mesophase at a conversion rate of about 100% almost instantaneously (less than 1min). Since the first and second extraction treatments have been conducted under supercritical conditions, separation of each solvent- insoluble from the respective solvent-soluble can readily be conducted by reduced pressure operation. n COPYRIGHT: (C)1988,JPO&Japio |
| priorityDate | 1987-02-19^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
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