http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0433618-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_347dcc44f559976d0c71bb9f9e238345 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B41M5-1246 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B41M5-165 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J13-18 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B41M5-165 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B41M5-124 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J13-18 |
| filingDate | 1990-10-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_33be39eaa33b3044aef72192e46238c3 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6619a5bf6471a2e7c7a4ae7a885f6c65 |
| publicationDate | 1991-06-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-0433618-A1 |
| titleOfInvention | Process for preparing microcapsules, the microcapsules obtained and their use |
| abstract | The microencapsulation of hydrophobic oils is described with substances dissolved or dispersed therein, in particular with color reaction partners of color reaction systems, the hydrophobic oil being mixed into an aqueous medium containing a dispersion-stabilizing compound, aminoplast capsules being formed in the oil-in-water dispersion obtained and in a conventional manner if necessary, these are then isolated. The aqueous medium contains a water-soluble modified anionic melamine-formaldehyde precondensate and such a water-soluble cationic compound which, when interacting with one another, form a dispersion-stabilizing compound. The modified melamine-formaldehyde precondensate is obtained by reacting melamine and an aldehyde in an alkaline aqueous medium with an alkali metal or alkaline earth metal sulfite, an alkali metal or alkaline earth metal sulfamate, an aminosulfonic acid, an aminocarboxylic acid and / or an aminodicarboxylic acid to form a precondensate, followed by this subject to polycondensation by acidifying with sulfamic acid, an amino, an aminodi-, a hydroxy- and / or a polyhydroxycarboxylic acid and / or an aminosulfonic acid, and after the polycondensation has ended, the resin solution obtained is optionally made alkaline. This process eliminates foreign salt pollution, can be flexibly controlled and leads to individual capsules without agglomerates. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0995728-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6458870-B1 |
| priorityDate | 1989-12-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 71.