http://rdf.ncbi.nlm.nih.gov/pubchem/patent/FR-2378811-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_1374dd16777534b65ad4422333245af8 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-20 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-78 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-00 |
| filingDate | 1978-01-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1978-08-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | FR-2378811-A1 |
| titleOfInvention | POLYESTERS PREPARATION PROCESS |
| abstract | The invention relates to a process for the preparation of polyester of dicarboxylic acids and glycols. In the process according to the invention, a lower alkyl diester of C1 -C4 of a dicarboxylic acid consisting for at least 90 mole% of terephthalic acid is reacted with a C2 -C10 alkylene glycol consisting for at least 90 mole% in ethylene glycol or tetramethylene glycol and the polycondensation of the glycol diester of dicarboxylic acid and / or its low molecular weight condensate obtained in the presence of A a lower alkyl p-formylbenzoate in C1 -C4 is then carried out in an amount of approximately 50 to 1000 ppm, B C1 -C 4 lower dialkyl isophthalate in an amount of about 50 to 1000 ppm and C p-toluic acid and / or C1 -C4 lower monoalkyl terephthalate in an additional amount about 30 ppm, the total amount of compounds A, B and C not being more than about 20,000 ppm. |
| priorityDate | 1977-01-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 25.