http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2734761-C2
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_70ec63d39d6704bacc5c7068c93ded43 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G2110-0083 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-4845 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-4841 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-485 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-4816 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-7621 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-76 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-48 |
| filingDate | 2016-12-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2020-10-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_39ec5e87924a3a33d7fb24a1070caf6b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0914957463452a18bc90175a2eac282a http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_acc51e0cda823d6d9b4c3e29504af07a http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_74b03f01857488c5d4a8aaa5cf2f1f62 |
| publicationDate | 2020-10-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | RU-2734761-C2 |
| titleOfInvention | Method of producing polyurethane foam |
| abstract | FIELD: chemical industry.SUBSTANCE: present invention relates to a polyurethane foam having elasticity of at least 50 % and a method for production thereof. Said method involves reacting: (i) a first polyester polyol, (ii) a second polyester polyol and (iii) one or more aromatic polyisocyanates in the presence of one or more gel-forming and/or foaming catalysts. First polyether polyol has polyester chains containing a proportion of ethylene oxide of not more than 20 %, where the residue of the ratio of alkylene oxide in the polyester chain is obtained from propylene- and/or butylene oxide. Proportion of primary hydroxyl groups in the first polyether polyol is not more than 20 %, the hydroxyl number is at least 40 and the nominal functionality is at least 2.5 and not more than 3.0. Second polyether polyol has polyester chains containing a proportion of ethylene oxide of at least 50 %, where the residue of the ratio of alkylene oxide in the polyester chain is obtained from propylene- and/or butylene oxide.EFFECT: present method is an improved method of producing highly elastic polyurethane foam from polyester polyol, obtained using a DMC-catalysed process without the need for a separate periodic KOH-catalyzed ethylene oxide grafting step.8 cl, 2 tbl, 2 ex |
| priorityDate | 2015-12-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 66.