EP 3697527 A1 20200826 - METHOD FOR PREPARING CAPSULES SENSITIVE TO PH OR UV RADIATION AND CAPSULES OBTAINED THEREFROM
Title (en)
METHOD FOR PREPARING CAPSULES SENSITIVE TO PH OR UV RADIATION AND CAPSULES OBTAINED THEREFROM
Title (de)
VERFAHREN ZUR HERSTELLUNG VON PH- ODER UV-STRAHLUNGSEMPFINDLICHEN KAPSELN UND DARAUS HERGESTELLTE KAPSELN
Title (fr)
PROCÉDÉ DE PRÉPARATION DE CAPSULES SENSIBLES AU PH OU AU RAYONNEMENT UV ET CAPSULES OBTENUES
Publication
Application
Priority
- FR 1759696 A 20171016
- EP 2018078269 W 20181016
Abstract (en)
[origin: WO2019076911A1] The present invention relates to a method for preparing solid microcapsules, comprising the following steps: a) adding, under agitation, a composition C1, comprising at least one active agent, to a polymeric composition C2, the compositions C1 and C2 being mutually immiscible, whereby an emulsion (E1) is obtained comprising droplets of composition C1 dispersed in the composition C2; b) adding, under agitation, the emulsion (E1) to a composition C3, the compositions C2 and C3 being mutually immiscible, whereby a double emulsion (E2) is obtained comprising droplets dispersed in the composition C3; c) applying shear to the emulsion (E2), whereby a double emulsion (E3) is obtained comprising controlled-size droplets dispersed in the composition C3; and d) polymerising the composition C2, whereby solid microcapsules dispersed in the composition C3 are obtained.
IPC 8 full level
B01J 13/14 (2006.01); B01F 3/08 (2006.01); B01J 13/18 (2006.01); C08F 2/48 (2006.01)
CPC (source: CN EP US)
B01J 13/14 (2013.01 - CN EP); B01J 13/18 (2013.01 - CN EP US); C08F 2/48 (2013.01 - CN EP US)
Citation (search report)
See references of WO 2019076911A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
FR 3072300 A1 20190419; FR 3072300 B1 20220422; CN 111344057 A 20200626; CN 111344057 B 20220927; CN 115350659 A 20221118; EP 3697527 A1 20200826; US 2020290006 A1 20200917; WO 2019076911 A1 20190425
DOCDB simple family (application)
FR 1759696 A 20171016; CN 201880072476 A 20181016; CN 202210871351 A 20181016; EP 18789373 A 20181016; EP 2018078269 W 20181016; US 201816756523 A 20181016