http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-809735-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c7ad58d3c0b071069a8ee0cb8c8ba2e8 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G64-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G64-081 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G64-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G64-06 |
| filingDate | 1957-09-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1959-03-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-809735-A |
| titleOfInvention | Process for producing thermoplastic polycarbonates |
| abstract | New high molecular weight thermoplastic polycarbonates are made by reacting dihydroxydiaryl ethers or thioethers or mixtures thereof and other dihydroxy compounds with an esterforming derivative of carbonic acid. The reaction process used may be one of those in disclosed Specifications 772,627, 808,485, 808,488, 808,489 or 808,490. The aryl radicals in the ethers or thioethers may be substituted with halogen or alkyl groups. Specified ethers and thioethers are 4,41-dihydroxy-diphenyl ether and sulphide and alkylated derivatives thereof. The other dihydroxy compound may be a dihydric alcohol (e.g. a polymethylene, an oxy- or thio-alkylene, an aromatic or a cycloaliphatic glycol), a dihydric phenol (especially a di-(monohydroxyaryl) alkane), or a phenol-alcohol, many examples of these dihydroxy compounds being given. The polycarbonates are soluble in benzene, toluene, cyclopentane, cyclopentanone, cyclohexanone, dimethyl formamide, dioxane cresol, chloroform and methylene chloride. They may be used in the production of lacquers, mouldings, films, foils and filaments. Examples describe the production of polycarbonates by reacting (1) 4,41-dihydroxydiphenyl ether and diphenyl carbonate; (2) 2,2-(4,41-dihydroxydiphenyl) butane, 4,41-dihydroxydiphenyl ether and phosgene; (3) 4,41-dihydroxydiphenyl sulphide and diphenyl carbonate; (4) 4,41-dihydroxydiphenyl sulphide, 2,2(4,41-dihydroxydiphenyl)-propane and phosgene; (5) 4,41-dihydroxy-3,31-dimethdiphenylsulphide and phosgene. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-3205198-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-3220975-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-3203926-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-3277054-A |
| priorityDate | 1956-10-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 50.