http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-112513129-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-485 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-755 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-3234 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-4238 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-4018 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-0866 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-75 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-32 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-42 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-40 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-48 |
| filingDate | 2019-07-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2022-12-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2022-12-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-112513129-B |
| titleOfInvention | Process for preparing polyurethane dispersions with reduced foam formation |
| abstract | The present invention relates to a process for the preparation of polyurethane dispersions, comprising the steps of: I) providing an isocyanate-functional prepolymer A) in a liquid phase comprising a water-miscible solvent having a lower boiling point than water, and II) adding an NCO-reactive compound to the isocyanate-functional prepolymer from step I), so that at least part of the reaction with the prepolymer takes place; wherein the liquid phase in step I) additionally contains water and/or After step II), water is added to the mixture obtained after step II). Before and/or during step II), a pressure p1 is exerted on the liquid mixture of isocyanate-functional prepolymers A), wherein p1 is less than the atmospheric pressure prevailing locally at this point in time. The pressure p1 is selected such that in step II) ≤50% by mass (preferably >0% by mass to ≤40% by mass, more preferably ≥0.1% by mass to ≤30% by mass, further preferably ≥1% by mass to ≤ 10% by mass) of the initially present water-miscible solvent. |
| priorityDate | 2018-07-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 192.