Title:
MICROCAPSULES, A PROCESS OF MAKING SUCH MICROCAPSULES AND COMPOSITIONS UTILISING SUCH MICROCAPSULES
Document Type and Number:
WIPO Patent Application WO/2013/083760
Kind Code:
A3
Abstract:
A method of forming active-containing microcapsules by the steps of (i) emulsifying the active in water in the presence of a polymeric emulsifier; (ii) adding to the emulsion thus formed a blend of at least 2 silanes and hydrolysing them prior to (iii) forming a shell by increasing the pH characterised in that (iv) the polymeric emulsifier also acts as a templating agent for the organosilicon compounds; (v) the silanes are compounds of the Formula (I), in which R is independently C1 -C4 linear or branched alkyl or alkene, optionally comprising a functional group selected from amino and epoxy, m is from 1-4,and selected such that there is present at least 2 silanes with different functionalities m. The resulting microcapsules have excellent properties, and are especially effective for use with fragrances.
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Inventors:
BONE STEPHANE (FR)
Application Number:
PCT/EP2012/074757
Publication Date:
August 29, 2013
Filing Date:
December 07, 2012
Export Citation:
Assignee:
GIVAUDAN SA (CH)
International Classes:
B01J13/18; C09K23/22; C09K23/38; C09K23/42; C09K23/52; C09K23/56
Domestic Patent References:
| WO2011124706A1 | 2011-10-13 |
Foreign References:
| US20110104221A1 | 2011-05-05 | |||
| FR2945937A1 | 2010-12-03 | |||
| GB2416524A | 2006-02-01 | |||
| US20110177951A1 | 2011-07-21 |
Attorney, Agent or Firm:
MCSTEA, John, Anthony (Duebendorf, CH)
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