http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-H024825-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c72d118f5664072de841f9c5c34b9d99 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G64-307 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G64-30 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G64-30 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G64-20 |
| filingDate | 1989-02-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_96571cdd82fc0edace0ab4219bc4ebc4 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1423b6c490fa519aa618c5a027908e4d |
| publicationDate | 1990-01-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-H024825-A |
| titleOfInvention | Method of regulating polymerization of cyclic polycarbonate |
| abstract | PURPOSE: To obtain an oligomer-like carbonate having a predetermined molecular weight by adding a phenol and heating a cyclic carbonate. n CONSTITUTION: (A) A cyclic polycarbonate having 2-30 structural units expressed by formula I (R denotes an aliphatic or aromatic group; Y' denotes O, S) is dissolved in an organic solvent such as N,N-dimethylformamide or the like, (B) a phenol expressed by formula (II) (R' denotes a 6-30C aromatic group; x denotes 1-6) is added to the above solution, preferably by 0.001-1.0mol%, taking the mol number of the structural unit of the component A as reference, and heated at 200-350°C to be reacted with each other to obtain an oligomer-like carbonate with a predetermined molecular weight. n COPYRIGHT: (C)1990,JPO |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4956335-A |
| priorityDate | 1988-02-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 21.