| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_ee1c19da359446fb5c4f0458a57b783d |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-52 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C17-20
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C19-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C19-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J23-26
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C17-00 |
| filingDate |
1988-07-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3ed8790a3584ebbfe9c6ea8377dba69d
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6e986c073a965067f8d1f3d610aeba76
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b9d38866fcb74ff513dfe175bd632d3f
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ba94fbfcffd3007d3dd66ab54239b17b
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d3a44b479f9c3bf7da78a3949d013cdc |
| publicationDate |
1990-01-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
JP-H0217135-A |
| titleOfInvention |
Fluorination of tetrachlorodifluoropropane |
| abstract |
PURPOSE: To obtain R-235, etc., by using tetrachlorodifluoropropane as a raw material and fluorinating the raw material with hydrogen fluoride in high yield and catalytic activity in the presence of a catalyst consisting of chromium oxide, aluminum oxide and magnesium oxide at specific ratios. n CONSTITUTION: The objective compound is produced by fluorinating tetrachlorodifluoropropane (C 3 H 2 Cl 4 F 2 : R-232) with hydrogen fluoride in gaseous phase under normal or positive pressure at 150-550°C, especially 300-450°C in the presence of a chromium oxide/aluminum oxide/magnesium oxide catalyst containing 50-90wt.% (preferably 60-80wt.%) of aluminum oxide in terms of oxide and containing 1-30wt.% (preferably 2-20wt.%) of magnesium oxide based on chromium oxide. The ratio of hydrogen fluoride to the above raw material is excess to stoichiometric amount, for example 4mol or more. n COPYRIGHT: (C)1990,JPO&Japio |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-1036777-C |
| priorityDate |
1988-07-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |