http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-WO2002022536-A1
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C2601-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C2527-11 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C37-84 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C37-20 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C37-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C37-84 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C39-17 |
| filingDate | 2000-09-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2004-01-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-WO2002022536-A1 |
| titleOfInvention | Method for producing high-purity 1,1-bis- (4-hydroxyphenyl) -3,3,5-trimethylcyclohexane |
| abstract | Phenol and 3,3,5-trimethylcyclohexanone are mixed in a phenol adduct crystal-containing slurry of 1,1-bis- (4-hydroxyphenyl) -3,3,5-trimethylcyclohexane (BPTMC) in the presence of an acid catalyst. Reaction → Neutralize with alkali while heating the slurry-like reaction mixture → Cool, filter phenol adduct crystals of BPTMC → Heat and dissolve in crystallization solvent. Provided is a method for producing high-purity BPTMC, which comprises cooling and filtering BPTMC crystals → circulating at least a part of the filtrate in a reaction step. According to the right, high purity and colorless BPTMC which has very little residual phenol and impurities (sodium, chlorine and sulfur) and can be used as a raw material for synthetic resin for optical products is industrially stable and highly selected. Rate and high yield. |
| priorityDate | 2000-09-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 47.