Ultraviolet absorbing composition with high absorbance
A technology with high absorbency and ultraviolet rays, which is applied in the direction of medical preparations containing active ingredients, skin care preparations, cosmetics, etc., can solve problems affecting product performance, achieve good light stability, reduce damage, and improve UV resistance. Effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0048] Preparation of ellagic acid powder solution: Weigh 40mg of ellagic acid and dissolve it in 25ml of ethanol. The solution is turbid. Then, shake it with ultrasonic waves. Take 1mL of turbid solution and dilute it 10 times with ethanol. The solution is clear and the concentration is 0.16mg / mL of ellagic acid powder solution;
[0049] Ethylhexyl salicylate: first take 10uL ethylhexyl salicylate stock solution in 10mL ethanol solution, dissolve and shake well for later use, take 200uL of the above dilution in 5mL ethanol, shake well, measure the absorbance (see figure 1 , ethylhexyl salicylate);
[0050] Ellagic acid + ethylhexyl salicylate: Take 200uL of the above ethylhexyl salicylate dilution in 5mL ethanol, shake well, add 200uL ellagic acid solution (0.16mg / mL), shake well, measure the absorbance (See figure 1 , ethylhexyl salicylate + ellagic acid).
[0051] Depend on figure 1 It can be seen that the absorbance of ethylhexyl salicylate at 210nm wavelength is 2.7,...
Embodiment 2
[0054] Homosalate: Take 10 μL of homosalate in 10 mL of ethanol solution, dissolve and shake well for later use, take 200 μL of this solution in 5 mL of ethanol, shake well, and measure the absorbance (see figure 2 , homosalate);
[0055] Homosalate + ellagic acid powder: Take 200 μL of the above homosalate dilution in 5 mL of ethanol, shake well, add 200 μL of ellagic acid powder solution (0.16 mg / mL), shake well, measure the absorbance (see figure 2 , homosalate + ellagic acid).
[0056] Depend on figure 2 It can be seen that the absorbance of homosalate is 3.0 at a wavelength of 210nm, and the absorbance of the mixture of ellagic acid and homosalate is 10.5; the absorbance of homosalate at a wavelength of 235nm is 3.5, and that of ellagic acid and The absorbance of the ester mixture was 5.5; the absorbance of homosalate at a wavelength of 310 nm was 1.5, and the absorbance of the mixture of ellagic acid and homosalate was 1.6.
[0057] When it is applied to cosmetics,...
Embodiment 3
[0059] Ethylhexyl methoxycinnamate: Take 10 μL ethylhexyl methoxycinnamate in 10 mL ethanol solution, dissolve and shake well for later use, take 200 μL of this solution in 5 mL ethanol, shake well, measure the absorbance (see image 3 , ethylhexyl methoxycinnamate);
[0060] Ethylhexyl methoxycinnamate + ellagic acid: Take 200 μL of the ethylhexyl methoxycinnamate dilution in 5 mL ethanol, shake well, add 200 μL ellagic acid powder solution (0.16 mg / mL), Shake well and measure the absorbance (see image 3 , ethylhexyl methoxycinnamate + ellagic acid powder).
[0061] Depend on image 3 It can be seen that the absorbance of ethylhexyl methoxycinnamate at a wavelength of 310nm is 4.5, and the absorbance of the mixture of ellagic acid and ethylhexyl methoxycinnamate is 5.6.
[0062] When it is applied to cosmetics, the mass ratio of ellagic acid to ethylhexyl methoxycinnamate is 1:6.24, and the concentration of ethylhexyl methoxycinnamate in cosmetics is ≤8.0%.
PUM
| Property | Measurement | Unit |
|---|---|---|
| absorbance | aaaaa | aaaaa |
| absorbance | aaaaa | aaaaa |
| absorbance | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More