http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2014129628-A
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C231-24 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C231-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F220-56 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C231-02 |
| filingDate | 2012-11-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2016-02-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | RU-2014129628-A |
| titleOfInvention | The method of obtaining N-alkyl (meth) acrylamides |
| abstract | 1. A method of producing N-alkyl (meth) acrylamides of the general formula (1): wherein R is hydrogen or a CH group, R and R are hydrogen or a linear, branched or cyclic alkyl radical, or an aryl radical with 1-12 carbon atoms, characterized in that the supplied (meth) acrylic acid anhydride is reacted with an aqueous solution of an alkylamine of the formula (2): wherein R and R are as defined above and the amide formed is isolated; the interaction is carried out at a temperature of from -5 ° C to 40 ° C and a pressure of from 0.5 to 6 bar, preferably from 0 bar to 1 bar, and the cooling temperature of the reaction vessel is higher than the crystallization temperature of N-alkyl (meth) acrylamide in the reaction solution. 2. A method for producing N-alkyl (meth) acrylamide according to claim 1, characterized in that the collector and the alkylamine are pre-cooled to a temperature below 30 ° C, preferably to a temperature of from 10 ° C to -5 ° C, before the reaction. The method for producing N-alkyl (meth) acrylamide according to claim 1, characterized in that the resulting solution of N-alkyl (meth) acrylamide and (meth) acrylic acid is diluted with water, if necessary, with a centrifugal mother liquor, and then neutralized with an alkaline solution preferably a solution of ammonia, NaOH or KOH, and precipitated N-alkyl (meth) acrylamide is isolated. 4. A method for producing N-alkyl (meth) acrylamide according to claim 1, characterized in that the reaction, as well as neutralization and precipitation, are carried out respectively in a separate container. The method of producing N-alkyl (meth) acrylamide according to claim 1, characterized in that the alkylamine participating in the reaction in a 50-90% aqueous solution, preferably in a 60-80% aqueous solution, most preferably in 65- A 75% aqueous solution is added to the (meth) acrylic acid anhydride. 6. The method of obtaining N-alkyl (meth) acrylamide according to claim 1, |
| priorityDate | 2011-12-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 31.