http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2434849-C2
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_e443fcd44793752f156437bbfd4c8603 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C263-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C265-14 |
| filingDate | 2008-01-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2011-11-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_793ab4ef7421ea94cf743d0f7c5ddea9 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_27043efee4276296d4693d14bbd128bb |
| publicationDate | 2011-11-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | RU-2434849-C2 |
| titleOfInvention | Method of producing isocyanates |
| abstract | FIELD: chemistry. n SUBSTANCE: invention relates to a method of producing isocyanates without using toxic phosgene. The method involves subjecting alkyl carbamate of formula , where R 3 is a straight alkyl group containing 1-20 carbon atoms; bis(C 5 -C 6 cycloalkyl)alkyl group containing 11-20 carbon atoms; C 5 -C 6 -cycloalkyl alkyl group containing 6-20 carbon atoms, where the cycloalkyl ring can be substituted with 1-3 substitutes selected from alkyl containing 1-8 carbon atoms; and an aromatic group containing 6-20 carbon atoms and having 1 or 2 benzene rings; R 3 has valence equal to n, R 4 is an alkyl group containing 1-20 carbon atoms, n equals 2, to thermal decomposition in the presence of an aromatic hydroxy compound, having a substitute in at least one ortho-position relative the hydroxyl group, of formula , where ring A is a benzene ring which can contain an additional substitute R 2 in another ortho-position relative the hydroxy group; R 1 is a group different from a hydrogen atom, which is an alkyl group containing 1-20 carbon atoms; an alkoxy group containing 1-20 carbon atoms; or a phenylalkyl group containing 7-20 carbon atoms; an additional substitute R 2 is selected from hydrogen or alkyl group containing 1-20 carbon atoms. n EFFECT: method increases output of isocyanates and lowers the amount of by-products accumulating inside the reactor. n 11 cl, 4 dwg, 35 ex |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2635090-C2 |
| priorityDate | 2007-01-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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