| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0e77f06144be4708a6ae75bd9fee56a4 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D71-50
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J2219-00168
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J2219-00164
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J2219-00101
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J2219-00121
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D71-52 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D71-5211
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D67-0011
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D67-00111
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D71-80
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G64-183
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J19-1862
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G64-22 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G64-40
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G64-22
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G64-20
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G64-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J19-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-66
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-00 |
| filingDate |
1980-08-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1984-03-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4d209b64605d00f4a924cda545ac3df8
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c4f5e633e13e8ea25fcd911e18e10855 |
| publicationDate |
1984-03-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-4436839-A |
| titleOfInvention |
Process for preparing polycarbonate-polyether-blockcopolymers |
| abstract |
A method for production of polycarbonate-polyether-blockcopolymers is provided. One or more solutions comprising bisphenol A and polyalkyleneglycol and a phosgene solution are added to a cooled initial reaction medium in a cooled reaction chamber in such a way that the phosgene contacts substantially the reaction partners from the one or more cooled solutions after they have spread in the reaction medium. Preferably the phosgene solution and the one or more solutions are added through tubes ending above the liquid level of the reaction medium such that the solutions added contact only within the stirred reaction mixture the reaction partner. The phosgene is employed in an excess of less than about 10 weight percent of the stochiometrically required weight amount relative to bisphenol A and polyalkyleneglycol. The polymer is useful in the production of membranes for dialysis, ultrafiltration and reverse osmosis. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2006135733-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6177095-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6083524-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4789413-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2019077049-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4880884-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5198064-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7230066-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5658995-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6048521-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4563516-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4806599-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4657977-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4663399-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4812530-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-RE39713-E
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4994533-A |
| priorityDate |
1979-08-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |