Process for making microcapsules involving phase inversion

Details Process for making microcapsules involving phase inversion Process for making microcapsules involving phase inversion

B - Operations, Transporting

01

J

B01J 13/02 (2006.01) B01J 13/14 (2006.01) B01J 13/16 (2006.01)

Patent

CA 2438199

A process for making microcapsules of an oil which are in dispersion in water comprises the steps of; (i) forming an initial dispersion of the oil in water in the presence of a surfactant, (ii) heating the initial dispersion above its phase inversion temperature, to form a bicontinuous phase composition, (iii) allowing or causing the composition to cool to below the phase inversion temperature so as to form an emulsion of oil droplets in the water, and (iv) encapsulating the oil droplets. The oil preferably has dissolved in it an oil- soluble or oil-dispersible active ingredient selected from agrochemicals, cosmetics, fragrances, sun-screens, ink-jet dyes, pigments, toners, biocides and pharmaceutical and veterinary products including drug delivery systems.

L'invention concerne un procédé de fabrication de microcapsules d'une huile en dispersion dans l'eau. Ledit procédé comprend les étapes de (i) formation d'une dispersion initiale d'huile dans l'eau en présence d'un agent de surface, (ii) de chauffage de la dispersion initiale au-dessus de sa température d'inversion de phases pour former une composition à phase discontinue, (iii) de refroidissement de la composition au-dessous de la température d'inversion de phases de manière à former une émulsion de gouttelettes d'huile dans l'eau, et (iv) d'enrobage des gouttelettes d'huile. L'huile a, de préférence, dissous un ingrédient actif liposoluble ou dispersable dans l'huile sélectionné parmi des produits agrochimiques, des cosmétiques, des fragrances, des écrans solaires, des colorants pour l'impression jet d'encre, des pigments, des poudres imprimantes, des biocides et des produits pharmaceutiques et vétérinaires, notamment des systèmes d'administration de médicaments.

Affiliated with

Also associated with

Rating

Process for making microcapsules involving phase inversion does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for making microcapsules involving phase inversion, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for making microcapsules involving phase inversion will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1558436