Resin composition and cosmetic containing said resin composition

A technology of resin composition and cosmetics, applied in the direction of cosmetics, cosmetics, cosmetic preparations, etc., can solve problems such as inability to absorb smoothly all the time, damage to the uniformity of the coating film, poor skin adhesion, etc., and achieve makeup durability and gloss Excellent skin feel, excellent makeup effect, excellent long-lasting makeup effect

Active Publication Date: 2014-12-03
KOBAYASHI KOSE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] However, among surface treatment agents that improve the dispersibility of powders in oil agents, most of them have poor adhesion to skin and have characteristics of diffusing into specific oil agents.
Moreover, when the cosmetics containing them are applied to the skin, the powder will continue to disperse in the oil agent in the makeup film, and will not adhere to the skin, and cannot be absorbed smoothly all the time, which will damage the uniformity of the coating film.

Method used

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  • Resin composition and cosmetic containing said resin composition
  • Resin composition and cosmetic containing said resin composition
  • Resin composition and cosmetic containing said resin composition

Examples

Experimental program
Comparison scheme
Effect test

manufacture Embodiment 1

[0229] Preparation of resin composition (1):

[0230] After melting and stirring 100g of carnauba wax, it is solidified and formed into flakes with a size of about 5-10mm. 100 g of this flaky carnauba wax was poured into 300 ml of isopropanol preheated to 40° C. while stirring, and the temperature was kept at 40° C., and it was left to stand for 6 hours to carry out extraction treatment. It was then filtered, and isopropanol was removed from the filtrate by distillation under reduced pressure to obtain a resin composition.

[0231] According to the aforementioned measurement method, the resin concentration, softening point, etc. of the obtained resin composition were measured. The results showed that the resin concentration was 30%, the softening point was 70.4°C, the iodine value was 40, the acid value was 17, and the saponification value was 82.

[0232] In addition, the DSC chart obtained by measuring the resin composition and carnauba wax with a differential scanning calo...

manufacture Embodiment 2

[0257] Preparation of resin composition (2):

[0258] After melting and stirring 100g of carnauba wax, it is solidified and formed into flakes with a size of about 5-10mm. 100 g of the flaky carnauba wax was thrown into 300 ml of a mixed solvent of ethanol and n-hexane 80:20 previously warmed to 40° C. while stirring, and the temperature was kept at 40° C., and it was left to stand for 4 hours and extracted. Then, it was filtered, and the mixed solvent was removed from the filtrate by distillation under reduced pressure to obtain a resin composition. The resin concentration is 25%, the softening point is 72.5°C, and the iodine value is 35.

manufacture Embodiment 3

[0260] Preparation of resin composition (3):

[0261]After melting and stirring 100g of carnauba wax, it is solidified and formed into flakes with a size of about 5-10mm. 100 g of this flaky carnauba wax was poured into 400 ml of isopropanol preheated to 40° C. while stirring, and the temperature was kept at 40° C., and it was left to stand for 8 hours for extraction treatment. It was then filtered, and isopropanol was removed from the filtrate by distillation under reduced pressure to obtain a resin composition. The resin concentration is 33%, the softening point is 69.5°C, and the iodine value is 43.

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Abstract

The present invention addresses the problem of providing a resin composition which can form a cosmetic film that exhibits excellent makeup durability and glossiness and non-tackiness and that combines a certain level of hardness and flexibility and therefore does not give a feeling of heaviness. This resin composition is characterized by: being obtained from carnauba wax through fractionation; and having a softening point of 55 to 80 DEG C and an iodine number of 20 to 55.

Description

technical field [0001] The present invention relates to a resin composition obtained by separating carnauba wax. More specifically, it relates to a resin composition which is non-tacky and has excellent film-forming properties and adhesive properties. A resin composition for a cosmetic film with a certain hardness and a soft and unburdened feeling, and cosmetics containing the resin composition. Background technique [0002] Conventionally, resin components such as rosin acid-based resins and silicone-based resins have been used in cosmetics in order to improve the durability of make-up or to develop glossiness. For example, the following technologies are disclosed: a technology for improving makeup durability by blending a specific organosiloxane resin and a volatile oil agent (Patent Document 1); The combination of agent and surface treatment powder forms a soft makeup film, which improves the durability of makeup and reveals a glossy technology (Patent Document 2), etc. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L91/06A61K8/92A61Q1/00A61Q1/02A61Q1/12A61Q3/02A61Q5/06C11B11/00
Inventor 奥山雅树岛田英美关谷匡俊宇田川史仁服部裕纪川岛佑介成惠美藤原由佳子
Owner KOBAYASHI KOSE CO LTD
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