http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6180748-B1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d648658dd620f548c24de39659a5e9e3 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G64-305 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08K3-32 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08K5-51 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G64-406 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08K3-32 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G64-40 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G64-30 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08K5-51 |
| filingDate | 1997-12-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2001-01-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_21477db76f03eca5239bdb479b29ca9a http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3da7eb0f4bad9aa4bcf814ab3c017524 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_05c4d6a198183efe65259586fce5f264 |
| publicationDate | 2001-01-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-6180748-B1 |
| titleOfInvention | Process for deactivating alkali metal catalyst residues in poly(2,2,4,4-tetramethyl-1,3-cyclobutylene carbonate residues |
| abstract | The invention relates to a process of deactivating a polycarbonate, by mixing a polycarbonate having an active alkali metal catalyst residue therein with a deactivator represented of a formula of:wherein, R1-R7 and R9 are, independently, hydrogen; aliphatic hydrocarbon of from 1 to 20 carbon atoms; substituted aromatic hydrocarbon of from 6 to 20 carbon atoms; or unsubstituted aromatic hydrocarbon of from 6 to 20 carbon atoms; R8 and R10-R13 are, independently, substituted or unsubstituted aromatic hydrocarbon of from 6 to 20 carbon atoms; or aliphatic hydrocarbon of from 1 to 20 carbon atoms; A is a tetrafunctional hydrocarbon group; and x is an integer of from 1 to 3, at a temperature and time sufficient to deactivate the alkali metal catalyst to form a deactivated polycarbonate, wherein the deactivated catalyst is not removed from the deactivated polycarbonate. The invention also relates to a polycarbonate having a deactivated metal catalyst. |
| priorityDate | 1996-12-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 203.