| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c7ad58d3c0b071069a8ee0cb8c8ba2e8 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C317-22
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C323-20
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G65-3317
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C68-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G64-183 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G64-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C68-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C317-22
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G65-331
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C323-20 |
| filingDate |
1976-08-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6566ed86faa89e28657a0d03ebcd7ede
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_fe591ca70e7984c772584a669efa71c5
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1a54379b1b8b22a1d56eab2c73b05891
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a7adabee990eb3fd8bc7c7556bff4435
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d7c6b22a01d16572a727c80b51e89f7d
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_20d762605a9aac98e951974e8d3afea2 |
| publicationDate |
1978-02-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
DE-2636784-A1 |
| titleOfInvention |
PROCESS FOR THE PRODUCTION OF CARBON-BIS-DIPHENOLESTERS FROM POLYALKYLENE OXIDE DIOLS AND THEIR USE FOR THE PRODUCTION OF HIGH MOLECULAR, SEGMENTED, THERMOPLASTICALLY PROCESSABLE POLYAETHER POLYCARBONATES |
| abstract |
Polyalkylene oxide diol-bis-diphenol carbonates are prepd. by heating (a) polyalkylene oxide diols of ave. mol. wt. >135 (7300) with (b) carboxylic acid-bis-aryl esters at 100-200 (110-180) degrees Alpha 35 torr, in the presence of catalysts, using >1 (1.1-2.25) mol. aryl ester per OH gp. in the diol. The resulting hydroxyaryl cpd. and excess aryl ester are distilled. The remaining polyalkylene oxide diol-bis-arylcarbonate (c) is heated with diphenols (d) at the same temp. and press. in the presence of catalysts, using >1 (1.1-2) mol. diphenol for each aryl ester gp. int he bis-aryl carbonate. The resulting cpd. is distilled. The polyalkylene oxide diol-bis-diphenol carbonates are bisphenol starting materials for the prepn. of polycarbonates. The polycarbonates obtd. are high mol.wt., segmented, thermoplastic prods., having improved shape stability on heating. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/FR-2392000-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4645806-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0006516-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5294729-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0008724-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4333809-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4267303-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5410014-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-4137529-A4
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4217297-A |
| priorityDate |
1976-08-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |