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Process for Preparing Silica Microcapsules Field of the Invention
| Content Provider | Semantic Scholar |
|---|---|
| Author | Acquah, Samuel A. |
| Copyright Year | 2017 |
| Abstract | The present invention relates to a process for preparing Silica microcapsules and more particularly, to a proceSS for pre paring Silica microcapsules comprising the Steps of dissolv ing tetraethyl orthosilicate (TEOS) into an aqueous Solution containing a hydrolysis catalyst to control a degree of hydrolysis and contribute hydrophilicity or lipophilicity, adding a core material and an appropriate amount of aminopropyltrialkoxysilane(APS) as a gelling agent into the Solution, and emulsifying and dispersing the resulting Solu tion to a Solution having a polarity opposite to that of the core material to microcapsulate by coating the core material with Silica Shell via a Sol-gel reaction. The process for preparing microcapsules of the present invention reduces environmental pollution compared to conventional pro ceSSes using an alkali gelling agent Such as an ammonia Solution, and are Suitable for both organic or inorganic core materials having hydrophilic or lipophilic property. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://patentimages.storage.googleapis.com/69/95/f4/8f28f6bba1277d/US6855335.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
