Thermotropic liquid crystal polymer microcapsules, a method...

Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form – Cosmetic – antiperspirant – dentifrice

Reexamination Certificate

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C424S489000, C424S490000, C264S004100, C264S004300, C264S004330, C264S004700

Reexamination Certificate

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07041304

ABSTRACT:
There are provided thermotropic liquid crystal polymer microcapsules which can show behavior of liquid crystal as it is within polymer phase due to phase separation between liquid crystal and polymer, so to be incorporated into cosmetic composition as an additive for visual effect, and in loading active ingredients within liquid crystal, can improve the stability of the active ingredients in cosmetic base; and a method for preparing the same; and cosmetic compositions containing the same.

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Ju et al., “Thermotropic liquid-crystal/polymer microcapsules prepared by in situ suspension polymeriztion”, Colloid Polym Sci (2002), 280, pp. 879-885.
Kim, et al., “New Approach to Produce Monosized Polymer Microcapsules by the Solute Co-diffusion Method”, Langmuir 2001, 17, pp. 5435-5439.

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