http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2135449-C1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_86d681fa4179ba38844ea334fe621080 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_16c54f5a479f8456f4d4f214d56f1dae http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_da414cb924a7d9124888af03a086edf8 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C1-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C2-86 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C11-18 |
| filingDate | 1997-07-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1999-08-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7bbded4f37f1ddf5bcb8e86d95f7149e http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0a10e185712d7ea06f8189c43c99d627 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_073854168a3f0e5ce31d4de67eaa8ac3 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b3e23c6023a9c7e26a6853c11c9d17b6 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c4d9454e39a9450e423c076f39b013d5 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_cdd8db5c8da0f6d8f816d8b52ff0cbff http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f6139b657eac6ed951aabe18bed3f7dc http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_16b2daa6d3f43f1d1922017c8d354bbc http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ad70fd93490ae831eeab0d8aa5837b6c http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_081463702f1e5170c7308d9e7e2ed1bb |
| publicationDate | 1999-08-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | RU-2135449-C1 |
| titleOfInvention | Isobutane-formaldehyde isoprene production process |
| abstract | FIELD: rubber monomer production. SUBSTANCE: process consists in oxidation of isobutane with air or another oxygen-containing mixture at elevated temperature and subsequent separation of unoxidized isobutane and bringing isobutylene and/or tert-butanol into contact with aqueous solution of formaldehyde in presence of acid catalyst. Oxidation of isobutane is carried out under conditions ensuring its conversion predominantly into tert-butanol or mixture of tert-butanol with tert-butyl hydroperoxide (0.01-0.99 wt %). When tert-butyl hydroperoxide is present in oxidation product, it is converted into tert-butanol which is then freed from isobutane and the latter is returned into oxidation zone. Tert-butanol is brought into contact with formaldehyde optionally together with isobutylene and the latter, when separated from reaction mixture, is returned into isoprene synthesis zone. Tert-butyl peroxide is converted into tert-butanol in presence of epoxidation catalyst containing metal salts and/or oxides and/or hydroxides at 70 to 170 C in contact with alkenes containing more than 5 carbon atoms. Resultant tert-butanol, prior to be fed into isoprene synthesis zone, is distilled. In the last subzone of isoprene synthesis zone temperature is maintained by at least 20 C higher than that in the first subzone. EFFECT: improved economical efficiency. 5 cl, 4 dwg, 1 tbl |
| priorityDate | 1997-07-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 47.