Thermotropic liquid crystal polymer microcapsules, a method for preparing the same, and cosmetic compositions containing the same
First Claim
1. A method for preparing thermotropic liquid crystal polymer microcapsules, which comprises the following steps of (1) dissolving thermotropic liquid crystal and monomer in a solvent and then adding initiator thereto;
- (2) emulsifying the solution of step (1) in aqueous phase in presence of dispersion stabilizer; and
(3) suspension polymerizing the emulsion of step (2) in presence of polymerization inhibitor, to give thermotropic liquid crystal polymer microcapsules.
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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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Citations
20 Claims
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1. A method for preparing thermotropic liquid crystal polymer microcapsules, which comprises the following steps of
(1) dissolving thermotropic liquid crystal and monomer in a solvent and then adding initiator thereto; -
(2) emulsifying the solution of step (1) in aqueous phase in presence of dispersion stabilizer; and
(3) suspension polymerizing the emulsion of step (2) in presence of polymerization inhibitor, to give thermotropic liquid crystal polymer microcapsules. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for stabilizing active ingredient by loading within thermotropic liquid crystal polymer microcapsules prepared by a method comprising the following steps of;
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(1) dissolving thermotropic liquid crystal and monomer in a solvent and then adding initiator thereto;
(2) emulsifying the solution of step (1) in aqueous phase in presence of dispersion stabilizer; and
(3) suspension polymerizing the emulsion of step (2) in presence of polymerization inhibitor, to give thermotropic liquid crystal polymer microcapsules. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification