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Composition comprising microcapsules containing reflective particles

A technology of reflective particles and compositions, applied in medical preparations containing active ingredients, skin care preparations, cosmetics, etc.

Inactive Publication Date: 2017-03-01
LOREAL SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, the main technical problem with reflective particles is to obtain a homogeneous composition, i.e. a composition in which the reflective particles are evenly distributed

Method used

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  • Composition comprising microcapsules containing reflective particles
  • Composition comprising microcapsules containing reflective particles
  • Composition comprising microcapsules containing reflective particles

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0053] According to a first embodiment, one or more encapsulated light-reflecting particles are present in the core of the microcapsule. In particular, the one or more encapsulated retroreflective particles are only present in the core of the microcapsules.

[0054] In a specific sub-embodiment, the core of the microcapsule includes at least one or more reflective particles and at least one binder.

[0055] In another specific subembodiment, the one or more retroreflective particles are present in the core as a lipid or aqueous dispersion.

[0056] According to a second embodiment, at least one inner layer surrounding the core comprises one or more light-reflecting particles.

[0057] An inner layer means that the layer must be surrounded by another inner or outer layer. Furthermore, the layered coating advantageously comprises at least one inner layer and one outer layer.

[0058] In particular, the one or more encapsulated light-reflecting particles are only present in at...

Embodiment approach

[0076] According to another preferred embodiment, the microcapsules comprise:

[0077] - a core comprising at least one organic material,

[0078] - at least one layer of coating around said core, said at least one layer of coating comprising a binder selected from at least one polymer, at least one based on Fatty materials, and their mixtures, preferably their mixtures,

[0079] - an outer layer comprising a hydrophilic polymer.

[0080] Preferably, the core comprises as said organic material at least one monosaccharide or derivative thereof, especially a monosaccharide-polyol advantageously selected from the group consisting of mannitol, erythritol, wood Sugar alcohols, sorbitol and mixtures thereof, preferably mannitol.

[0081] Preferably, said at least one layer of coating surrounding said core comprises at least one hydrophilic polymer selected from:

[0082] - homopolymers or copolymers of acrylic acid or methacrylic acid, or salts and esters thereof;

[0083] - co...

Embodiment

[0956] I. Microcapsules

[0957] In the following, different examples of the preparation of microcapsules according to the invention are described in order to illustrate the invention.

[0958] The following particles are used in the examples according to the invention:

[0959] - bismuth oxychloride (Ronaflair LF 2000 from Merck), designated "A" in the example below,

[0960] -Mica-Titanium Dioxide-Iron Oxide (COLORONA ORIENTALBEIGE dispatched by MERCK), named "B" in the example below,

[0961] -Mica-Titanium Dioxide-Iron Oxide (dispatched by BASF Terra YellowMN4502), named "C" in the example below,

[0962] -Mica-Titanium Dioxide-Iron Oxide (dispatched by BASF Terra Red MN4506), named "D" in the example below,

[0963] -Mica and iron oxides and titanium dioxide and tin oxides (PRESTIGE SOFT BEIGE dispatched by SUDARCHAN CHEMICAL), named "E" in the example below,

[0964] - Titanium Dioxide (and) Mica (Timiron Silk Red (Merck)), designated "F" in the example below, ...

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Abstract

The instant invention relates to a composition for caring for and / or making up keratin materials comprising, in a physiologically acceptable medium, at least one microcapsule containing at least one encapsulated releasable material(s) said microcapsule comprising at least one core and at least one layered coating surrounding said core, and said encapsulated material(s) being at least one reflective particle, and being only released from said microcapsule(s) when said composition is applied onto a keratin material, such as keratin fibers or skin. The invention further relates to a cosmetic process for caring for and / or making up keratinic materials, comprising application on said keratinic materials in particular on the skin of a composition as defined above.

Description

technical field [0001] The present invention relates to a composition for the care, hygiene and / or make-up, in particular of keratinous materials, comprising microcapsules containing at least one light-reflecting particle, in particular in the form of flakes, more particularly Preferably, the reflective particles have a d / e ratio greater than 10. Background technique [0002] There is increasing interest in imparting care properties to cosmetic products, especially cosmetic compositions. These conditioning properties are generally associated with a smooth, creamy, rich appearance of the composition. This creamy composition is also believed to impart benefits like nourishing properties to the treated keratinous material, especially the skin. [0003] However, the introduction of some components in a cosmetic composition can be detrimental to the general appearance of the composition and the comfort of use, especially for skin care products where some guidelines are often so...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K8/02A61K8/11A61K8/34A61Q19/00A61Q1/02
CPCA61K8/0254A61K8/11A61K8/345A61K2800/262A61K2800/412A61K2800/43A61K2800/621A61K2800/63A61K2800/652A61Q1/02A61Q19/00A61K8/042A61K8/046A61K8/062A61K8/29A61K8/732A61K8/8129A61K8/8147A61K2800/26A61K2800/624
Inventor 清水桃子于青
Owner LOREAL SA