sunscreen composition

A technology of composition and composite particles, which is applied in the field of sunscreen compositions, can solve the problems of increased and increased ultraviolet rays, and achieve the effect of improved convenience, high effect, and strong perspiration

Active Publication Date: 2017-05-03
OTSUKA PHARM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the demand for sunscreen agents with high UV protection effect continues to grow due to the increase in the amount of ultraviolet rays reaching the ground due to effects such as the destruction of the ozone layer.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 4～6

[0144] Manufacture of sunscreen compositions

[0145] The components shown in the following Table 3 were mixed in respective compounding ratios to prepare water-in-oil type sunscreen compositions (Examples 4-6). It should be noted that the unit of each compounding ratio in the table is % by weight. In addition, the viscosity of the composition of Examples 1-3 was 150-250 mPa*s, respectively, when it measured using the B-type viscometer at 20 degreeC.

[0146] table 3

[0147]

[0148] *1: Product name "Uvinul MC80N" (manufactured by BASF Corporation)

[0149] *2: Brand name "Eusolex OCR" (manufactured by Merck)

[0150] *3: "Uvinul A Plus Granular" (manufactured by BASF Corporation)

[0151] *4: Product name "Parsol SLX" (manufactured by DSM Corporation)

[0152] *5: Product name "KSP-100" (manufactured by Shin-Etsu Chemical Co., Ltd.)

[0153] *6: Trade name "Tospearl 2000B" (manufactured by Momentive Co., Ltd.), trade name "KMP-590" (manufactured by Shin-Etsu Chemic...

Embodiment 5

[0164] Evaluation of SPF and PA of the sunscreen composition of Example 5

[0165] For the composition described in Example 5 produced as described above, the SPF value was measured in the same manner as in Test Example 2-1, and the PFA value was evaluated in accordance with the measurement standards of the Japan Cosmetic Industry Federation guidelines.

[0166] First, the sunscreen composition of Example 5 was applied to the site from the back of the scapula to the waist of 10 test subjects as a test site. The application areas were 4 cm x 6 cm, and 48 mg of the sunscreen composition was spread over the entire site with fingertips for about 30 seconds. Ultraviolet irradiation of the test site was started 15 minutes after application. As a light source for ultraviolet irradiation, a xenon lamp solar simulator (Ushio Optical Maodulex, manufactured by Ushio Electric Co., Ltd.) equipped with a filter system of Schott WG320 and UG11 filters with a thickness of 1 mm was used, and ...

Embodiment 6

[0172] Evaluation of SPF and PA of the sunscreen composition of Example 6

[0173]About the composition described in Example 6 manufactured as mentioned above, SPF value and PFA value were evaluated similarly to Test Example 2-2. The results are shown in Table 4.

[0174] Table 6

[0175] Average (n=10) SPF value 53.3 PFA value 8.1

[0176] From Table 6, it can be confirmed that the average value of the SPF value of the sunscreen composition of Example 6 is 53.3. The results of this test showed that the sunscreen composition of Example 6 also had an SPF of 50 or higher. Furthermore, it was shown that the PFA value of the sunscreen composition of Example 6 was 8 or more. Thus, it can be seen that the sunscreen composition has a remarkably high protective effect against both UVB and UVA.

[0177] In addition, Example 6 is also a sunscreen composition in the form of a liquid water-in-oil emulsion. Therefore, this composition has water resistance t...

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Abstract

The present invention provides a sunscreen composition comprising two or more oil-soluble ultraviolet absorbers and silicone composite particles having an average particle diameter of 10 μm or less.

Description

technical field [0001] The present invention relates to a sunscreen composition excellent in an ultraviolet protection effect. In addition, the present invention relates to a sunscreen composition that is excellent in water resistance, is mild and stable to the skin, and has a high UV protection effect. Background technique [0002] In the past, sunscreens have been frequently used to protect the skin from ultraviolet rays. In recent years, sunscreen cosmetics tend to be used regardless of seasons, men, women and children, and the demand for sunscreen cosmetics is still growing. [0003] The ultraviolet defense ability produced by sunscreen can be expressed by the SPF value (sun protection factor, Sun Protection Factor) of the UV-B (wavelength 290-320nm) defense index, and the PFA value of the UV-A (wavelength 320-400nm) defense index ( UVA protection factor (Protection Factor of UVA) or a classification index based on it, that is, PA (UVA protection grade, Protection Grad...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61K8/89A61K8/37A61K8/40A61K8/41A61K8/891A61Q17/04
CPCA61Q17/04A61K8/0241A61K8/895A61K2800/412A61K8/606A61K8/025A61K8/064A61K8/34A61K8/41A61K8/585A61K8/676A61K8/89A61K2800/5922A61K2800/624
Inventor 田中雅彦荻原美代子加古纯子
Owner OTSUKA PHARM CO LTD
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