http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-3455270-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_8e0bf0928b608797b70bbc2b91c7e52e |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-089 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2375-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G2110-0083 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G2110-005 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G2110-0008 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2205-06 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-7657 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-7671 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-7664 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-089 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-4804 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-4808 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-4816 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-485 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-1833 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J9-125 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-2027 |
| classificationIPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G101-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-48 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-76 |
| filingDate | 2017-05-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ca08b70131f37115db46334043c546c8 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_48eec5c89e54e099b3d7bd8df2c85597 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7d0570c207ac10c4310c4e6bf3d397aa http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_bee6e6d0f8e652d931f2e85db21553d9 |
| publicationDate | 2019-03-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-3455270-A1 |
| titleOfInvention | Tack-free polyurethane flexible foam |
| abstract | The present invention relates to a method for producing polyurethane flexible foams, in which method (a) polyisocyanate prepolymer is mixed with (b) polymeric compounds comprising groups that are reactive to isocyanates, (c) optionally chain lengthening- and/or crosslinking agents, (d) a catalyst, (e) blowing agents containing water and (f) optionally additives, to form a reaction mixture and converted into a polyurethane flexible foam, the polyisocyanate prepolymer having (a) an NCO content of between 16 and 30 wt. %, in relation to the total weight of the component a) and being obtainable by reacting (a1) diphenylmethane diisocyanate, containing (a1a) 2,4' diphenylmethane diisocyanate, (a1b) 4,4'-diphenylmethane diisocyanate and (a1c) polycyclic homologs of the diphenylmethane diisocyanate with (a2) polyols containing (a2a) ethylene oxide-rich polyalkylene oxide having a hydroxyl number of 20 to 60 mg KOH/g, originated from one or more 2 to 4 functional starter molecules and a fraction of ethylene oxide units of at least 55 (65, 70) wt. % in relation to the total weight of alkylene oxide units and (a2b) low ethylene oxide polyalkylene oxide with a hydroxyl number of 20 to 60 mg KOH/g, originated from one or more 2 to 4 functional starter molecules, and a maximum fraction of ethylene oxide units of 10 wt. % in relation to the total weight of alkylene oxide units, the fraction of (a1a) 2,4'-diphenylmethane diisocyanate being 5 to 15 wt. % and of (a1b) 4,4'-diphenylmethane diisocyanate being 40 to 80 wt. % in relation to the total weight of polyisocyanates (a1), and the polymeric compounds comprising groups (b) that are reactive to isocyanates contain: b1) 60 to 80 wt. % of at least one polyalkylene oxide with a hydroxyl number of 20 to 60 mg KOH/g, originated from one or more 2 to 4 functional starter molecules, and a fraction of ethylene oxide units of at least 55 to 95 wt. % in relation to the total weight of akylene oxide units; (b2) 20 to 30 wt. % of at least one polyalkylene oxide with a hydroxyl number of 20 to 80 mg KOH/g, originated from one or more 2 to 4 functional starter molecules, and a fraction of ethylene oxide units of 0 to 40 wt. % in relation to the total weight of alkylene oxide units. The fraction of compounds (b1) and (b2) is at least 80 wt. % in relation to the total weight of the polymeric compounds comprising groups (b) that are reactive to isocyanates (b). |
| priorityDate | 2016-05-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 146.