http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2022073835-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_387abf6afc9a2cd5cfa5cd4d35f8b9fe |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G2110-0083 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G2110-0091 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-168 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-73 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61L15-425 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61L15-60 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-485 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61L15-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-302 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-3228 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-48 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-32 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-30 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-73 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61L15-60 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61F13-00 |
| filingDate | 2021-09-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a1a6717a0a6a4e14dc7b3e58a7630197 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9d7a634e9364518a89282e7a1aeaaeb9 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_178cb48378055a71fa2eec4594a6d33b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_192b00e376be5ba5d8881f72a75b28f3 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5a65915e906198f7686790dee1318218 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7d0a9634233803c86d677770c2b1d4ed |
| publicationDate | 2022-04-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | WO-2022073835-A1 |
| titleOfInvention | Method for producing polyurethane foams or hydrogels by employing amine chain extenders |
| abstract | The invention provides a process for producing polyurethane foams or hydrogels, in which compositions comprising A) isocyanate-functional prepolymers obtainable by the reaction of A1)low molecular weight diisocyanates of molar mass from 140 to 278 g/mol, with A2)polyalkylene oxides having an OH functionality of two or more, A3)optionally further isocyanate-reactive components differing from A2); B) water in an amount of at least 2% by weight, based on the total weight of the composition; C) optionally polyisocyanates obtainable by reaction of at least two low molecular, preferably aliphatic diisocyanates, wherein the diisocyanates having a molar mass of 140 to 278 g/mol, D) optionally catalysts; E) optionally salts of weak acids, the corresponding free acids of which have a pKA in water at 25°C of ≥ 3.0 and ≤ 14.0; F) optionally surfactants; and G) optionally mono- or polyhydric alcohols or polyols; H) optionally hydrophilic polyisocyanates obtainable by reaction of H1) low molecular weight diisocyanates of molar mass from 140 to 278 g/mol and/or polyisocyanates preparable therefrom and having an average isocyanate functionality of 2 to 6 with H2) monohydroxyfunctional polyalkylene oxides of OH number from 10 to 250 and of oxyethylene unit content from 50 to 100 mol%, based on the total amount of the oxyalkylene groups present, I) a polyamine with at least two amine groups or two ammonium groups, preferably a diamine, are provided, optionally foamed and cured, wherein the isocyanate containing components, especially components A), C) and H), do not exceed a residual diisocyanate content of 8% by weight, based on the total weight of the polyurethane foam or hydrogel and wherein the ratio of amine groups stemming from component I) to isocyanate groups of all components A) to I) is in a range of 0.1 to 1.2. These foams or hydrogels are used in wound dressings, cosmetic articles or incontinence products. |
| priorityDate | 2020-10-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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