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Cosmetic composition comprising a polyester and a branched hydrocarbon compound

A cosmetic composition and composition technology, applied in the field of lipstick, can solve problems such as inappropriate

Inactive Publication Date: 2009-04-22
LOREAL SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, these compositions and combinations, even though they significantly improve the gloss, are still unfavorable from the viewpoint of sustaining the gloss for a certain period of time

Method used

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  • Cosmetic composition comprising a polyester and a branched hydrocarbon compound
  • Cosmetic composition comprising a polyester and a branched hydrocarbon compound
  • Cosmetic composition comprising a polyester and a branched hydrocarbon compound

Examples

Experimental program
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preparation example Construction

[0156] The polycondensate can be prepared by esterification / polycondensation methods commonly used by those skilled in the art. As an illustration, general preparation methods include:

[0157] - mixing said polyol and said aromatic and non-aromatic monocarboxylic acid,

[0158] - heating the mixture under an inert atmosphere, first to the melting point (typically 100-130°C) and then to a temperature of 150 to 220°C until the monocarboxylic acid has been completely consumed (acid number less than or equal to 1 is reached) , preferably simultaneously distilling off the water formed as it forms, and then

[0159] - optionally cooling the mixture to a temperature of 90 to 150° C.,

[0160] - adding polycarboxylic acid and / or cyclic anhydride and optionally silicone with hydroxyl or carboxyl functionality all at once or sequentially, then

[0161] - Reheating to a temperature lower than or equal to 220°C, especially 170 to 220°C, preferably while continuing to remove the water ...

Embodiment 1

[0342] Embodiment 1: the synthesis of pentaerythritol base benzoate / isophthalate / isostearate

[0343] Add 20 g of benzoic acid, 280 g of isostearic acid and 100 g of pentaerythritol into a reactor equipped with a mechanical stirrer, an argon inlet and a distillation system, then gradually heat the mixture to 110-130 °C to obtain a homogeneous solution. The temperature was then gradually increased to 180°C and maintained at this temperature for about 2 hours. The temperature was raised again to 220°C and maintained until an acid number less than or equal to 1 was obtained, which required about 11 hours. The mixture was cooled to a temperature of 100 to 130°C, then 100 g of isophthalic acid was added, and the mixture was gradually heated again to 220°C for about 11 hours.

[0344] This gives 405 g of a pentaerythritolylbenzoate / isophthalate / isostearate polycondensate in the form of a very thick oil.

[0345] The polycondensate exhibits the following characteristics:

[034...

Embodiment 2

[0352] Embodiment 2: the synthesis of pentaerythritol base benzoate / isophthalate / isostearate

[0353] Add 35 g of benzoic acid, 270 g of isostearic acid and 80 g of pentaerythritol into a reactor equipped with a mechanical stirrer, an argon inlet and a distillation system, then gradually heat the mixture to 110-130 °C to obtain a homogeneous solution. Next, the temperature was gradually increased to 180° C. and maintained at this temperature for about 2 hours. The temperature was raised again to 220°C and maintained until an acid number less than or equal to 1 was obtained, which required about 11 hours. The mixture was cooled to a temperature of 100 to 130°C, then 65 g of isophthalic acid was added, and the mixture was gradually heated again to 220°C for about 5 hours.

[0354] This gave 380 g of a pentaerythritolylbenzoate / isophthalate / isostearate polycondensate in the form of an oil.

[0355] The polycondensate exhibits the following characteristics:

[0356] - 50% by...

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Abstract

Provided is a cosmetic composition with improved color retention as compared with compositions of conventional technology containing other polyesters. The invention relates to the composition, comprising: 0.1-70 wt.%, with respect to the weight of the composition, of at least one polyester obtained by reaction: of at least one polyol comprising 3 to 6 hydroxy groups; of at least one non-aromatic branched mono-carboxylic acid; of at least one aromatic monocarboxylic acid, and of at least one polycarboxylic acid comprising at least 2 carboxy groups COOH and / or one cyclic anhydride of such a polycarboxylic acid, and from 1 to 90 wt.%, with respect to the weight of the composition, of at least one branched hydrocarbon compound, with 20-50 DEG C of melting point, 500-100,000 g / mol of molecular weight, other than the polyester. The invention includes a cosmetic treatment method employing the composition and the use of this composition for caring for or making up the skin or lips.

Description

technical field [0001] The present invention relates to cosmetic compositions comprising polymers of the polyester family and their use, especially in lipsticks. [0002] The compositions according to the invention may be applied to substrates such as facial or body skin, lips and keratinous substances such as hair, eyelashes, eyebrows and nails. Background technique [0003] A large number of cosmetic compositions are desired which, after their application to keratinous substances (skin, lips, superficial bodily growths), deposit a film that is glossy. Mention may be made, for example, of lipstick, nail polish or certain hair products. [0004] To obtain such results, it is possible to mix certain starting materials, in particular lanolin, with "glossy" oils such as polybutene, which, however, exhibit a high viscosity; or fatty acids with a high carbon number or esters of alcohols; or certain vegetable oils; or esters obtained by partial or complete esterification of hydr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K8/85A61Q1/06A61Q19/00C08G63/46
CPCA61Q1/06A61K8/8152A61K8/8182A61K8/85A61K8/375A61Q1/04
Inventor A·里卡德
Owner LOREAL SA