http://rdf.ncbi.nlm.nih.gov/pubchem/patent/ES-2561552-T3
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_387abf6afc9a2cd5cfa5cd4d35f8b9fe |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G64-307 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G64-30 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L69-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G64-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G64-06 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G64-30 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G64-06 |
| filingDate | 2011-03-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2016-02-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_62d26b3bab8c51765f35fe772e27fa2a http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_cf2ad45130c89e269b5a3c8608358d44 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ebf5d4ed710f13107131e5acfa33ebf9 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_adf2258c1ca65e326abdff135dade80e http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_cfba96290c30b36021ea215ba3cba53f http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_13ca63bc33db252a07c7272e49791696 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ac4e8464960167a0cf39b02635c177c5 |
| publicationDate | 2016-02-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | ES-2561552-T3 |
| titleOfInvention | Fused polycarbonate with improved thermal aging |
| abstract | Continuous melt transesterification process for the preparation of polycarbonates that have a weight average molecular weight Pm> = 18000 g / mol, a terminal OH group content of less than 150 mg / kg, and contain structural units of formula (I) * * Formula ** where the bracket designates repeating structural units, M is Ar or a polyfunctional compound A, B, C and a compound D, Ar can be a compound that is represented by formula (V) or (VI) * * Formula ** where Z is C1 to C8 alkylidene or C5 to C12 cycloalkylidene, S, SO2 or a single bond, R13, R14. R15 independently of each other, are a substituted or unsubstituted C1 to C8 alkyl radical, preferably substituted or unsubstituted phenyl, methyl, propyl, ethyl, butyl, CI or Br, n represents 0, 1 or 2, r, s , t, independently of each other, can be 0, 1, 2 or 3, the polyfunctional compound A is a compound of the formula ** Formula ** the polyfunctional compound B is a compound of the formula ** Formula ** the compound polyfunctional C is a compound of formula ** Formula ** compound D is a compound of formula ** Formula ** Y is H or a compound of formula (X) ** Formula ** where identical or different R16 is H , a C1 to C20, C6H5 or C (CH3) 2C6H5 alkyl, yu can be 0, 1, 2 or 3, X is Y or - [MOCOO] nY, M and Y have the meanings mentioned above; and the sum of the functional compounds A, B, C and D is> = 5 mg / kg and <= 2500 mg / kg, characterized in that: a) aromatic diphenols and diphenyl carbonate are reacted in the presence of one or more catalysts , in a first stage of the process at temperatures between 160 ºC and 280 ºC and at pressures between 250 mbar and 30 mbar in an optionally multi-stage procedure with the removal of phenol to obtain oligomeric aromatic carbonates having molar masses Pm lower than 10,000 g / mol, and because b) in a second stage of the process, the oligomeric aromatic carbonates prepared in a) are reacted at temperatures between 260 ° C and 310 ° C and at pressures between 10 mbar and 0.5 mbar in an optionally procedure multistage with the removal of phenol during a residence time in this second stage of the process of at least 400 minutes in total, preferably at least 500 minutes, to give a polycarbonate of higher molecular weight having molar masses Mw> = 18000 g / mol. |
| priorityDate | 2010-04-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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