http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-2268704-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_8e0bf0928b608797b70bbc2b91c7e52e |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-85 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J19-247 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-785 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-78 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-78 |
| filingDate | 2009-04-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5b2c4d382b51a849c89a1ea2771d0b23 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a312c85e58156aba0f757b94c7147a4c |
| publicationDate | 2011-01-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-2268704-A1 |
| titleOfInvention | Method for the continuous production of biodegradable polyesters |
| abstract | The invention relates to a method for the continuous production of a biodegradable polyester on the basis of aliphatic or aliphatic and aromatic dicarboxylic acids and aliphatic dihydroxy compounds. According to said method, a mixture of the aliphatic dihydroxy compounds, the aliphatic and aromatic dicarboxylic acids and optionally other comonomers (component C) is mixed to give a paste, without adding a catalyst, or alternatively, the liquid esters of the dicarboxylic acids and the dihydroxy compound and optionally other comonomers are fed to the mixture, without adding a catalyst, i) the mixture being continuously esterified or transesterified with the total amount or a partial amount of a titanium catalyst in a first step; ii) the transesterification or esterification product obtained according to i) being continuously precondensed in a second step in a tower reactor and in a uniform flow via a down-flow evaporator, the reaction vapors being removed from the reaction mixture in situ up to a viscosity number of 20 to 80 cm 3 /g (DIN 53728); iii) the product obtainable according to ii) being continuously polycondensed in a third step up to a viscosity number of 100 to 220 cm3/g (DIN 53728). |
| priorityDate | 2008-04-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 357.