Method for producing particles of pyrithione salts

Details Method for producing particles of pyrithione salts Method for producing particles of pyrithione salts

C - Chemistry, Metallurgy

07

D

C07D 213/89 (2006.01)

Patent

CA 2283882

The present invention relates to a method for producing submicron-sized particles of pyrithione salts, comprising reacting pyrithione or a water- soluble salt of pyrithione and a water-soluble polyvalent metal salt in a pressurized turbulent flow reactor that generates pulverizing forces, the reaction producing submicron sized particles of pyrithione salt. The present invention also relates to particles made by the above method, and products, such as shampoos, soaps, and skin care medicaments made using these particles.

L'invention concerne un procédé de production de particules d'une taille inférieure au micron de sels de pyrithione, ce procédé consistant à faire réagir la pyrithione ou un sel hydrosoluble de pyrithione et un sel de métal polyvalent hydrosoluble dans un réacteur à flux turbulent pressurisé qui génère des forces de pulvérisation. La réaction permet d'obtenir des particules d'une taille inférieure au micron de sel de pyrithione. La présente invention concerne également des particules obtenues par le procédé décrit ci-dessus ainsi que des produits tels que des shampoings, des savons et des médicaments pour les soins de la peau, tous ces produits étant obtenus à l'aide de ces particules.

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