| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c72d118f5664072de841f9c5c34b9d99 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G64-081
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D335-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G64-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D211-94 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D335-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D211-94
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D211-22
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G64-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G64-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G64-00 |
| filingDate |
1994-11-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1995-10-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a31c9fc80ea0d56e358a0102dd617796 |
| publicationDate |
1995-10-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-RE35059-E |
| titleOfInvention |
Bis(4-hydroxyphenyl)cycloalkanes |
| abstract |
A heterocyclohexylidenebisphenol having the formula <IMAGE> (I) wherein X is S, SO[,] or SO2 [or N-COR and R is a C1-4 primary or secondary alkyl or phenyl optionally substituted by an ethyl or 1-2 methyl groups] may be prepared by the reaction of phenol or a similar compound with the corresponding thiopyranone [or piperidone]. The thio compound may be oxidized to the corresponding sulfoxide or sulfone. Polycarbonates prepared from said heterocyclic bis(4-hydroxyphenyl) cycloalkanes having high glass transition temperatures and are expected to be ductile. |
| priorityDate |
1992-12-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |