| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_108b142d49573f053d08fb995425d61d |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10S203-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-10 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C37-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C37-74
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D3-009 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C39-15
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C37-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D3-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J31-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C37-74 |
| filingDate |
1991-02-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7f79742af220bcd2f166fee531f9e5a9 |
| publicationDate |
1992-08-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
JP-H04211031-A |
| titleOfInvention |
Purified para-cumylphenol |
| abstract |
PURPOSE: To obtain purified p-cumylphenol useful as a chain terminator for polycarbonate by distilling, in the presence of a base, crude p-cumylphenol resulting from reacting α-methylstyrene with phenol. n CONSTITUTION: A α-Methylstyrene of formula I is slowly added to 50-200% molar excess of phenol of formula II in the presence of an acid catalyst (e.g. acid ion exchange resin) at 80-110°C to yield crude p-cumylphenol. Then, after the removal of the catalyst, the crude reaction product is distilled in the presence of a base (e.g. sodium bicarbonate) at a reduced pressure of 25-200 mm to obtain pure p-cumylphenol. n COPYRIGHT: (C)1992,JPO |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2010043029-A |
| priorityDate |
1990-02-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |