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Preparation method of hollow polyurethane microspheres and photo-protection cosmetic composition containing hollow polyurethane microspheres

A hollow microsphere and polyurethane technology, which is applied in the field of preparation of polyurethane hollow microspheres, can solve the problems of unfavorable formulation, safety, health, residue and the like of cosmetic compositions

Active Publication Date: 2018-06-19
WANHUA CHEM GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Obviously, these solvents and surfactants will partially remain in the microspheres, which is not conducive to formulation and safety and health in cosmetic compositions.

Method used

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  • Preparation method of hollow polyurethane microspheres and photo-protection cosmetic composition containing hollow polyurethane microspheres
  • Preparation method of hollow polyurethane microspheres and photo-protection cosmetic composition containing hollow polyurethane microspheres
  • Preparation method of hollow polyurethane microspheres and photo-protection cosmetic composition containing hollow polyurethane microspheres

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] 20 parts by weight CP-1055, 28 parts by weight 161, 62 parts by weight The organic phase composed of HT100 and 0.03 parts by weight of dibutyltin dilaurate was uniformly mixed at room temperature, and the molar ratio of isocyanate groups to hydroxyl groups was 7.4. Using a high-speed disperser at 750rpm, 110 parts by weight of deionized water was slowly added to the above-mentioned organic phase within 20 minutes, dispersed for 55 minutes, then poured into a 500ml three-necked flask, and added 0.75 parts by weight of 90SH-400. Stir at 150rpm and heat up to 60°C, react for 4 hours, then heat up to 80°C for 3 hours, cool to room temperature, and filter with a 100-mesh filter to obtain a white polyurethane hollow microsphere suspension with a solid content of 49%, which is carried out by a hanging bag centrifuge After solid-liquid separation, wash with deionized water three times, dry the filter cake in a vacuum oven at 70°C for 4 hours, and grind to obtain cross-link...

Embodiment 2

[0073] 10 parts by weight DL-400, 23 parts by weight CP-1055, 25 parts by weight 3010, 55 parts by weight 270, 10 parts by weight The organic phase composed of HT100 and 0.04 parts by weight of dibutyltin dilaurate was uniformly mixed at room temperature, and the molar ratio of isocyanate groups to hydroxyl groups was 2.2. Using a high-speed disperser at 500rpm, 123 parts by weight of deionized water was slowly added to the above organic phase within 10 minutes, dispersed for 30 minutes, and then poured into a 500ml three-necked flask, adding 0.75 parts by weight of 90SH-400, at 150rpm Heat up to 55°C under stirring, react for 5 hours, then heat up to 85°C for 2 hours, cool to room temperature, and filter with a 100-mesh filter to obtain a white polyurethane hollow microsphere suspension with a solid content of 49.7%. Use a hanging bag centrifuge to solid-liquid After separation, it was washed three times with deionized water, and the filter cake was dried in a vacuum o...

Embodiment 3

[0075] 57 parts by weight of CMA-2085, 5 parts by weight HDI, 10 parts by weight HT100, 38 parts by weight 161. The organic phase composed of 0.03 parts by weight of dibutyltin dilaurate is uniformly mixed at room temperature, and the molar ratio of isocyanate groups to hydroxyl groups is 4.8. Using a high-speed disperser at 1000rpm, 110 parts by weight of deionized water was slowly added to the above organic phase within 5 minutes, dispersed for 10 minutes, and then poured into a 500ml three-necked flask, adding 0.75 parts by weight of 90SH-400, at 150rpm Heat up to 50°C under stirring, react for 5 hours, then heat up to 90°C for 1 hour, cool to room temperature, filter with a 100-mesh filter to obtain a white polyurethane hollow microsphere suspension with a solid content of 49.5%, and use a centrifuge for solid-liquid separation After washing with deionized water three times, the filter cake was dried in a vacuum oven at 70°C for 4 hours, and after grinding, polyuretha...

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Abstract

The invention relates to photo-protection cosmetic composition containing hollow polyurethane microspheres and a preparation method of the hollow polyurethane microspheres. Specifically, the composition has unique effects in aspects of high smooth and refreshing skin feelings while protecting skin against visible sunlight radiation. The hollow polyurethane microspheres are shells with specific optical performance and specific soft and elastic skin feelings, can bring smooth and refreshing skin feelings and the like to the photo-protection cosmetic composition and can effectively increase the SPF (sun protection factor) value of sun cream.

Description

technical field [0001] The invention relates to a preparation method of polyurethane hollow microspheres suitable for personal care and its application in light protection personal care compositions. Background technique [0002] Scientific research shows that if human skin is exposed to sunlight, UVA (320-400nm) and UVB (290-320nm) in sunlight can cause skin redness, pigmentation and local irritation, and even cause sunburn, melanoma and wrinkles Formation. Therefore, with the improvement of people's living standards, consumers begin to use cosmetics with light protection function. [0003] A variety of cosmetics for photoprotection have been reported, and most of these cosmetics use organic sunscreens and inorganic sunscreens. These two solutions have some disadvantages. Organic sunscreens actually use chemical ingredients to protect themselves from the sun, that is, they use the principle of absorption to absorb ultraviolet rays and convert them into heat or release mol...

Claims

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Application Information

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IPC IPC(8): A61K8/87A61Q17/04A61Q19/00
CPCA61K8/87A61K2800/412A61Q17/04A61Q19/008
Inventor 许诺秦佃斌李晓杰曲鹏飞乔义涛孙家宽华卫琦
Owner WANHUA CHEM GRP CO LTD
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