http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RO-135066-A2
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_339246a49ad406d4c73789f0bc02717e |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C69-76 |
| filingDate | 2019-12-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_bc1f4432b5918d0efd2cc8c779fb2bff http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_16666109830246960e6a21d3921f156a http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_23d2c39436a07a8f08a9c169638d2650 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ee66d4b062913e2b64fb481b9b8c03d2 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8eb0e46603a3800878d166174441028b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2f4d134b457f37dfc921e0924ed6fc39 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5a2329f2c5c964411d08b30ed5b109e8 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8c2c0e8eb51661f490014f44b3e730b9 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1c797aa505a78d61ba5a5a72838b4504 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4510cb662ba2c96fd011ae595ab96b5c |
| publicationDate | 2021-06-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | RO-135066-A2 |
| titleOfInvention | POLYESTERS WITH POLYESTER-AMIDIC STRUCTURE CONTAINING MESOGENIC STRUCTURAL UNITS FOR SEMI-FLEXIBLE POLYURETHANE FOAMS AND METHOD OF OBTAINING THEM |
| abstract | The invention relates to a process for obtaining polyols with a polyester-amide structure containing mesogenic structural units for semiflexible polyurethane foams. The process according to the invention consists in the successive steps of: (1) PET glycolysis in the presence of a mixture of diethylene glycol and polyethylene glycol 600, in a molar ratio of 50 ... 100/0 ... 50, in a molar ratio of PET / glycols of 1 /3..4.5, in the presence of 5% molar relative to PET catalyst 1,8-Diazabicyl [5.4.0] undec-7-ene at 190 ° C, under stirring, nitrogen atmosphere and total reflux , for 3-4 hours, (2) aminolysis with an aromatic diamine in the presence of 5% molar to PET, 1,5,7-Triazabicyl [4.4.0] dec-5-ene catalyst, under the same conditions , for 5 h, (3) esterification of the reaction mixture with adipic acid, in molar ratio to PET of 1.5-2, in the presence of titanium tetraisopropoxide catalyst, at a temperature of 200-205 ° C , for 4 ... 6 h, resulting in polyols with an average molecular weight of 630 ... 2000 g / mol, acidity index of 1.5 ... 3.5 mg KOH / g, hydroxyl index 50 ... 180 mg KOH / g, functionality 2 and dynamic viscosity at 25 ° C of 7000-15000 cP. |
| priorityDate | 2019-12-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 44.