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Cosmetic composition with agglomerated substrates

A technology of cosmetic composition and aggregate, applied in the direction of cosmetics, cosmetics, medical preparations containing active ingredients, etc., can solve skin discomfort and other problems, achieve reduced whitening effect, long-lasting sun protection effect, and good sun protection factor Effect

Inactive Publication Date: 2003-09-10
LANCASTER GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, when using such emulsions on the skin, large aggregates must be spread by application, which can be uncomfortable for the skin
The problem increases when reducing the size of the particles in the applied product

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Embodiment 1

[0037] Example Example 1 : Production of aggregate dispersion

[0038] Monodisperse non-porous spherical silica (Merck) with a particle size of 0.1 μm and dry spherical titanium dioxide were mixed in a ratio of 1:30 at a temperature of 35 to 36 °C and stirred at 140 rpm for 8 min . Water was then added and stirred at 320 rpm for 30 minutes until the product was a paste. Water was then added to the mixture, and homogenization was performed at 3800 rpm for 20 minutes, so that the viscosity of the dispersion was about 23,000 cps. At this point its pH is about 6. The aggregates were found to be medium particles with a size of 0.95 μm as measured with a Master Meter (Malvern Instruments Ltd., Worcs., UK).

[0039] Using the same method and similar conditions, a dispersion containing zinc oxide and ferric oxide can be produced. Example 2 : Liquid cosmetics (SPF15) A phase carnation oil 19% silicone oil 10% jojoba oil 5% magnesium stearate 2% B phase water adjusted to 100% magn...

Embodiment 2

[0039] Using the same method and similar conditions, a dispersion containing zinc oxide and ferric oxide can be produced. Example 2 : Liquid cosmetics (SPF15) A phase carnation oil 19% silicone oil 10% jojoba oil 5% magnesium stearate 2% B phase water adjusted to 100% magnesium sulfate 0.9% dye 4% according to WO96 / 17588 disclosed with SiO 2 Modified Kaolin 2.5% TiO according to the invention 2 / SiO 2 (ratio 4:1) 5.0% ZnO / SiO according to the invention 2 (ratio 1:1) 2.0% Phase C Pholosine complex 2.0% according to DE 19654508.0 published: Laminarin extract 40% Lilium candidum extract 45% Glycyrrhizinic acid 10% Matricaria recutita extract 5% D Asymmetric Hierarchical Aggregates of Single-Level Particles with 2% Magnetizable Hard 1.0% According to WO95 / 03061

[0040] Palm Oil 0.5%

[0041] At a temperature of about 55°C, the Phase A and Phase B ingredients were stirred separately. According to the invention containing TiO 2 The aggregate dispersion liquid of ZnO and ZnO ...

Embodiment 3

[0044] Phases A and B are then mixed together and homogenized. Phase C was added after it had cooled to about 40°C, while phases D and E were prepared separately. The resulting completely homogeneous oil / water emulsion has a very stable high sun protection factor, can be used frequently, spreads easily and evenly on the skin, and has a long-lasting effect. Example 3 : Sunscreen powder (SPF20) with UV-A / UV-B protection

[0045] According to WO96 / 17588 by SiO 2 Modified Kaolin 10%

[0046] Standard Kaolin 5%

[0047] Talc powder adjusted to 100

[0048] Dye 4.0%

[0049] TiO of the present invention 2 / SiO 2 (ratio 50:50) 7%

[0050] ZnO / SiO of the present invention 2 (ratio 70:30) 3%

[0051] Fe of the present invention 2 o 3 / SiO 2 (ratio 60:40) 3%

[0052] Other inorganic spherical particles TiO 2 , ZnO, Fe 2 o 3 After mixing separately, mix with talc, kaolin and dye at room temperature. A binder for extruding into powder is then added. The adhesive contai...

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PUM

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Abstract

The invention relates to cosmetic compositions containing agglomerates with particular particle sizes. The compositions are characterized in that they contain spherical non-porous SiO2 particles with a particle size of 0.05-1.5 mum, and other inorganic particle-shaped materials with spherical structure. The spherical SiO2 and other inorganic materials form defined agglomerates with a particle size of 0.06 mum to 5 mum. The proportion of agglomerates in the cosmetic composition is between 0.1 and 30% wt. The aggregate-containing dispersions are produced by introducing the spherical SiO2 step by step and in special conditions. Formulations produced with these aggregates are characterized by particularly stable and high sunscreen factors.

Description

field of invention [0001] The present invention relates to cosmetic compositions containing aggregates of a particular particle size. Background technique [0002] It is well known that in cosmetic emulsions inorganic particles of oxides such as iron oxide, titanium dioxide, zinc oxide etc. are used to form aggregates of different sizes. As a result, to use such emulsions on the skin, large aggregates must be spread by application, which is uncomfortable for the skin. The problem increases when reducing the size of the particles in the applied product. It is therefore often desirable to inhibit the formation of these aggregates. [0003] From EP-B-406657 it is known that a layered matrix comprises at least 0.5% by weight of spherical particles which have a small diameter of about 0.05 to 50 μm compared to the layered matrix. An outstanding advantage of the present invention is the depolymerization of the layered matrix due to the addition of spherical particles such as si...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61K8/00A61K8/02A61K8/04A61K8/06A61K8/19A61K8/25A61K8/26A61K8/27A61K8/29A61K8/30A61Q1/00A61Q1/02A61Q1/04A61Q1/06A61Q17/04A61Q19/00
CPCA61Q19/00A61Q1/02A61K8/27A61K2800/43A61K8/19A61Q17/04A61K8/25A61K8/0275A61Q1/06A61K8/29A61K2800/412A61P17/00
Inventor 卡琳·戈尔兹-贝尔纳莱昂纳多·察斯特罗
Owner LANCASTER GRP
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