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ALTERNATIVE METHOD FOR MICROENCAPSULATION OF ACTIVE INGREDIENTS
专利权人:
Creathes
发明人:
HUILIER, Hervé
申请号:
EP13773633
公开号:
EP2894978B1
申请日:
2013.09.10
申请国别(地区):
EP
年份:
2018
代理人:
摘要:
The present invention relates to a method for producing a dispersion of microcapsules of active ingredient, in suspension in water, comprising the following successive steps: heating a fatty phase comprising at least (i) a wax, and at least one active ingredient to be encapsulated, at a reaction temperature above the melting point of said wax heating a first aqueous phase comprising at least one water-soluble surfactant and at least one protective colloid incorporating said fatty phase into said first aqueous phase while maintaining the reaction temperature, so as to form a stable oil-in-water emulsion adding, dropwise, said emulsion previously formed to a second aqueous phase comprising at least one water-soluble surfactant, the temperature of said second phase being below the melting point of said wax and resulting in the formation of solid crystalline microcapsules containing said active ingredient, said microcapsules being in suspension in said second aqueous phase. The invention also relates to the use of the microcapsules obtained at the end of the process, (i) for producing a cosmetic composition or (ii) for producing impregnated fabrics or (iii) for producing household products.
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中国工程科技知识中心
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