http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S6123685-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d6402b23ab8782152be47b3996e48a4a |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D01F9-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C10C3-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D01F9-15 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C10C3-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C10C3-10 |
| filingDate | 1984-07-11^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c17d6f63e3e9b98b0290226e45a77140 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4842680e67fadee332d7cac7facf334e http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_26edbf016875ce07d7893e353d63c8fd |
| publicationDate | 1986-02-01^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-S6123685-A |
| titleOfInvention | Production of carbon fiber precursor pitch |
| abstract | PURPOSE: To produce the titled pitch which is homogeneous and optically isotropic, by removing mesophase of tar pitch, heat-treating pitch and hydrogenating the formed mesophase pitch. n CONSTITUTION: Soft to medium pitch contained in tar pitch is heat-treated at 350W500°C to form mesophase. An arom. solvent is added thereto, and solvent- insoluble matters contg. mesophase are removed by filtration or decantation. The resulting pitch contg. no free carbon is heat-treated at 350W500°C in an inert gas atmosphere under atomospheric or reduced pressure to obtain mesophase pitch contg. optical anisotropic fraction of 80wt% or above and having a benzene-insoluble matter content of 70wt% or above and a quinoline-insoluble matter content of 20W40wt%. The pitch is hydrogenated to solubilize the quinoline-insoluble matter, to make it wholly optically isotropic and to make the ratio of H/C in the pitch 0.7W1.2. The pitch is then heat-treated at 300W450°C in an inert gas atmosphere under atmospheric or reduced pressure to remove low-molecular components. n COPYRIGHT: (C)1986,JPO&Japio |
| priorityDate | 1984-07-11^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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