http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2293077-C1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b99d20d4325992d840b1eaa46234bf06 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C211-55 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C211-51 |
| filingDate | 2005-07-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2007-02-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8205e35caf85d5a507f08672d6c47af9 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_44bea8e66e6f64f9bb5fc24084642932 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_555b1c226b4b860db9b73d273b0c70d9 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d2dda75e4fa0ffea11b0c758cb3f5670 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4add60c0d5d8c4631a30ae57386205df http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_fb35c1ce28c01b660e0c075e0b290f72 |
| publicationDate | 2007-02-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | RU-2293077-C1 |
| titleOfInvention | Method for preparing n-alkyl-n'-phenyl- or n,n'-dialkyl-para-phenylenediamines (variants) |
| abstract | FIELD: organic chemistry, chemical technology. n SUBSTANCE: invention relates to a method for synthesis of N-alkyl-N'-phenyl- or N,N'-dialkyl-p-phenylenediamines. Method involves the alkylation reaction of p-aminodiphenylamine or p-phenylenediamine with aliphatic (C 5 -C 10 )-alcohols at increased temperature in the presence of potassium hydroxide, distillation of vapors of water and alcohol formed in the alkylation process through heated reflux condenser and recovery of condensed alcohol vapors to the reaction zone, neutralization of reaction mass with acid and isolation of the end product. Before termination of the alkylation reaction an alkylating alcohol potassium salt is added to the reaction mass taken in the amount 10-20 wt.-% of the parent potassium hydroxide. Method provides enhancing quality of the end product based on reducing content of amine in it and decreasing energy consumption of the neutralization process. n EFFECT: improved method of synthesis. n 5 cl, 1 tbl, 13 ex |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2446147-C2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2463289-C2 |
| priorityDate | 2005-07-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 45.