Microcapsules of polyvinyl alcohol with liquid,...

Details Microcapsules of polyvinyl alcohol with liquid,... Microcapsules of polyvinyl alcohol with liquid,...

B - Operations, Transporting

01

J

167/3, 117/46.5

B01J 13/02 (2006.01) A01N 25/28 (2006.01) A61K 9/50 (2006.01) B01J 13/12 (2006.01)

Patent

CA 1129263

Abstract of the disclosure: Microcapsules having a shell consisting of water-so- luble polyvinyl alcohol and containing a liquid, water-in- soluble material are obtained by dispersing a liquid, water-insoluble phase of a substance, substance mixture or substance solution in an aqueous phase of polyvinyl alco- hol obtained by partial hydrolysis of polyvinyl acetate and having a degree of hydrolysis of from 72 to 99 mol % and dehydrating the dispersion to obtain the capsules in powder form.

320887

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