http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0797571-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0efa077d881a96aeb1e29b21ef1bbb58 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D201-12 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B03B9-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J11-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D201-12 |
| filingDate | 1995-12-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7ad2fe8f07201523bf68004a116430a2 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_52fed5c6f611fe4952ab620581769c43 |
| publicationDate | 1997-10-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-0797571-A1 |
| titleOfInvention | Method of obtaining caprolactam by hydrolytic splitting of molten polycaprolactam |
| abstract | Disclosed is a method of obtaining caprolactam from polymers containing caprolactam in the presence of superheated water. The proposed method is based on the use of polymers containing the repeating unit -[-N(H)-(CH2)5-C(O)-]- or mixtures consisting essentially of: 40-99.99 wt.% of a polymer containing the repeating unit -[-N(H)-(CH2)5-C(O)-]-;0.01-50 wt.% of additives selected from the group consisting of inorganic fillers, organic and inorganic pigments and dyes; 0-10 wt.% of organic and/or inorganic additives; 0-40 wt.% of polymers which do not contain polyamide; 0-60 wt.% of polyamides with the exception of polycaprolactam and copolyamides based on caprolactam. These polymers or mixtures are brought into contact with superheated water at a temperature of 280-320 DEG C and at a pressure of 7.5-15 Mpa, the weight ratio of water to the polymer containing the repeating unit -[-N(H)-(CH2)5-C(O)-]- being between 5:1 and 13:1 and the reaction time less than 3 hours. The reaction mixture consisting essentially of water and the polymers or mixture indicated above should contain no gaseous phase under the conditions of hydrolysis. |
| priorityDate | 1994-12-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 82.