Predicate |
Object |
assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_be5cde6c8b09f3fbdc7340ad8364b7d4 |
classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C15-085 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C15-073 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C2-64 |
classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C15-085 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C2-66 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C15-073 |
filingDate |
1999-11-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
grantDate |
2003-09-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9f2c2d736c0f0430a35d8f1c4618bc69 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4516b75bb94b146d444db0c72227de95 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_65121698f2fd580abf0d59e194007fc1 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_78365e8fe90e11b720bcb5191da4d8ef http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b300edd7f8c4d46c13d4b10825636127 |
publicationDate |
2003-09-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
publicationNumber |
EP-1140739-B1 |
titleOfInvention |
Improved aromatic alkylation process |
abstract |
Akylation product is contacted with a purification medium in a liquid phase pre-reaction step to remove impurities and form a purified stream. The purified stream may then be further processed by liquid phase transalkylation to convert the polyalkylated aromatic compound to a monoalkylated aromatic compound. The process may use a large pore molecular sieve catalyst such as MCM-22 as the purification medium in the pre-reaction step because of its high reactivity for alkylation, strong retention of catalyst poisons and low reactivity for oligomerization under the pre-reactor conditions. Olefins, diolefins, styrene, oxygenated organic compounds, sulfur containing compounds, nitrogen containing compounds and oligomeric compounds are removed. |
priorityDate |
1998-12-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
type |
http://data.epo.org/linked-data/def/patent/Publication |