| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_6cfc033f059d282fcd915bc8be2ae53f |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C231-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C231-065 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C231-06 |
| filingDate |
1994-07-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2464696cb8daf56e0db293bf2380cdf6
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2318a7de5da315718a96db6ea2df550f |
| publicationDate |
1995-01-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-0635484-A1 |
| titleOfInvention |
Preparation process of acrylamide |
| abstract |
This invention provides a process for the preparation of acrylamide. Acrylonitrile is treated through at least two purification steps in which acrylonitrile is brought into contact with a strongly-acidic cation exchange resin and then with a resin having primary and/or secondary amino groups or with activated carbon. The resulting acrylonitrile is subjected to hydration in the presence of a copper-based catalyst. The process of this invention can provide high-quality acrylamide even when acrylonitrile of ordinary quality is used, and permits preparation of a polyacrylamide suitable for use in the production of a coagulant having good water solubility. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6472561-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6306795-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1124789-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1124789-A4
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-3135767-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1616962-A4
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1616962-A1 |
| priorityDate |
1993-07-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |