Process for manufacturing microcapsules by interfacial polycondensation with polyoxyalkyleneamine and acid chlorides
US6706397B2 · kind B2 · utility
3Cited by
2References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 24, 2002 |
| Grant date | Mar 16, 2004 |
| Priority date | — |
| Expiry date | Jul 25, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2985
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention relates to a process of obtaining microcapsules, comprising mainly the following stages:preparing a scarcely water-soluble organic phase containing a determined amount of acid chlorides,forming an emulsion of said organic phase in an aqueous phase,adding to the aqueous emulsion an amount of at least one polyoxyalkylene polyamine,reacting the monomers containing the amine and acid chloride functions so as to form a polyamide membrane around the emulsified organic phase,recovering the microcapsules obtained.The present invention also relates to a microcapsule.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.