Composition containing liquid fat phase and particle paste through gelatinization of semi-crystalline polymer

A technology of semi-crystalline polymers and compositions, applied in the direction of medical preparations containing active ingredients, body powders, skin care preparations, etc., which can solve problems such as strengthening the coated surface, causing problems, and being unsightly

Inactive Publication Date: 2008-10-01
AIR PROD & CHEM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, the distribution of these particles in the composition is not uniform, giving the composition a grainy look and feel; this is especially problematic when the composition is a make-up product
Because the resulting cosmetics are uneven and unsightly, it will strengthen the application surface, especially the blemishes of the skin, which is completely contrary to the expectations of users

Method used

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  • Composition containing liquid fat phase and particle paste through gelatinization of semi-crystalline polymer
  • Composition containing liquid fat phase and particle paste through gelatinization of semi-crystalline polymer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0159] Example 1: Acidic polymer with a melting point of 40°C

[0160] 120 g of Parleam were added to a 1 liter reactor equipped with a central anchor stirrer, reflux condenser and thermometer and heated from room temperature to 80°C over 45 minutes. The following mixture C was added over 2 hours at 80 °C 1 : 40 g cyclohexane + 4 g Triganox 141 [2,5-bis(2-ethylhexanoylperoxy)-2,5-dimethylhexane]. After 30 minutes, in mixture C 1 Add mixture C over 1 hour and 30 minutes 2 , C 2 The composition is as follows: 190g stearyl acrylate + 10g acrylic acid + 400g cyclohexane. After the addition of both, the reaction mixture was allowed to continue at 80° C. for 3 hours, and then all cyclohexane in the reaction mixture was distilled off at atmospheric pressure. A polymer containing 60% by weight of active ingredient in Parleam is then obtained. Its weight average molecular weight M w It is 35000, characterized by polystyrene equivalent, and its melting temperature M.t. measured b...

Embodiment 2

[0161] Example 2: Basic polymer with a melting point of 38°C

Embodiment 3

[0163] Example 3: Acidic polymer with a melting point of 60°C

[0164] The same procedure as Example 1 was applied, but wherein behenyl acrylate was used instead of stearyl acrylate. The resulting polymer is 60% by weight active ingredient present in Parleam with a weight average molecular weight M w is 42000, and the melting point M.t. is 60°C.

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Abstract

The present invention relates to a composition, which comprising, in a physiologically acceptable medium, at least one liquid fatty phase structured by at least one semi-crystalline polymer having an organic structure, wherein said polymer is solid at ambient temperature; and particles that are solid at ambient temperature and are dispersed in said medium, wherein the particles can be introduced into the medium in the form of a colloidal dispersion. This composition can be provided in the form of a stick which deposits, on a keratinous substance, such as the lips, a glossy, nonsticky, and covering film.

Description

technical field [0001] The present invention relates to care and / or therapeutic and / or cosmetic compositions for the skin, including the scalp and / or the lips of the human face, comprising a liquid fatty phase structured by at least one specific polymer, which composition can in particular be formulated Available in lipstick stick form, application gives a glossy, non-sticky coverage coat. technical background [0002] Structured (or hardened) liquid fats are common in cosmetic and dermatological products; this is especially the case for solid compositions such as deodorants, lipsticks, lipsticks, concealers and cast foundations. [0003] The phrase "liquid fatty phase" as defined in the present invention refers to a fatty phase that is liquid at room temperature (25°C) and normal pressure (760mmHg), and it is composed of one or more mutually compatible, liquid at room temperature Fatty substances (also known as oils) make up. The fatty phase is macroscopically homogeneous...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61K8/00C08L53/00A61Q1/00A61Q17/04A61K8/02A61K8/04A61K8/06A61K8/31A61K8/72A61K8/81A61K8/92A61Q1/02A61Q1/04A61Q1/10A61Q1/12A61Q15/00
CPCA61K8/8152A61K8/8111A61K8/8182A61K2800/42A61Q1/06A61K2800/436A61K8/85A61K8/04
Inventor V·菲拉里
Owner AIR PROD & CHEM INC
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