| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c7ad58d3c0b071069a8ee0cb8c8ba2e8 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10S260-24 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08K5-098
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08K5-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G64-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08K5-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G64-42 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G64-40
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G64-42
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G64-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08K5-098
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J5-08 |
| filingDate |
1975-12-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1978-07-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_60082d9876ab1a5cae99f18c30f3661c
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3baeac7bad008a78affba8007dc7d651
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_77bbde94f40ed19245f545f193230d9c
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7faf6c77880ca3611f2252492b07d3f5 |
| publicationDate |
1978-07-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-4098754-A |
| titleOfInvention |
Process for the preparation of high molecular thermoplastic polycarbonates of low flammability |
| abstract |
The present invention is concerned with a process for the production of high molecular weight thermoplastic ppolycarbonates having improved flame resistance and in conjunction with glass fibres, improved mechanical properties and the polycarbonates so produced. A solution polycarbonate is reacted with an alkali metal salt soluble in the melt of the polycarbonate until the Staudinger Index has increased by about 3 to 30 cm3/g. This usually requires about 0.0001 to 0.1 wt. % of the salt, based on the weight of polycarbonate and a temperature of about 250 DEG to 400 DEG C for between about 1 and 30 minutes. In a preferred embodiment the reaction is conducted in a self-cleaning twin screw extruder. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5140056-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-106470818-B
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-8302751-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-106660251-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5646209-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10207424-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4631433-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-106470818-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5175198-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4757103-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-106660251-B
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-103665723-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4289685-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4404303-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4490504-A |
| priorityDate |
1974-12-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |