| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_2cb72657cf0479385a9b5e655af1e16f |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-52 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C37-20 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J31-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C37-20
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C39-16 |
| filingDate |
2004-04-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_eaec13497e8a3a1eba882462ad5b9011
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5f3dbdced5ce4780e466302aef156fe6 |
| publicationDate |
2004-09-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-2004192975-A1 |
| titleOfInvention |
Process for producing bisphenol A |
| abstract |
There is disclosed a process for producing bisphenol A by subjecting phenol and acetone to condensation reaction in the presence of a catalyst composed of an acid type ion exchange resin which is modified in part with a sulfur-containing amine compound, wherein the ion exchange resin having a modification rate of 10 to less than 20 mol % is used for a methanol concentration in acetone of lower than 250 ppm by weight, and the ion exchange resin having a modification rate of 20 to 65 mol % is used for a methanol concentration in acetone of 250 to 8000 ppm by weight. The above process is capable of producing bisphenol A at high conversion and selectivity by suppressing deterioration of catalytic activity due to methanol as an impurity in acetone. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2022179898-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-101948296-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2022179902-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2022179904-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2022179899-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10005709-B2 |
| priorityDate |
2001-03-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |