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Preparation method of liquid propyl silicon resin blend for personal care

A blend, propyltrimethoxysilane technology, applied in skin care preparations, hair care, cosmetic preparations, etc., can solve problems such as environmental hazards, increase process production costs, corrode production equipment, etc., to avoid Pollution, good hand feel, anti-aging effect of skin

Pending Publication Date: 2022-05-27
陈才虎
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation of silicone resin with chlorosilane as raw material will produce a large amount of hydrochloric acid (HCl), which will corrode the production equipment and have certain harm to the environment. The waste water produced also needs special treatment, which further increases the production cost of the process.

Method used

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  • Preparation method of liquid propyl silicon resin blend for personal care
  • Preparation method of liquid propyl silicon resin blend for personal care
  • Preparation method of liquid propyl silicon resin blend for personal care

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A preparation method of liquid propyl silicone resin blend for personal care, the steps are:

[0039] At room temperature, 11.66 mol of deionized water, 7.49 mol of cyclohexane, and 1.52 mol of dehydrated ethanol were added to a three-port reactor equipped with a thermometer, and the mechanical stirring was turned on, and the mixture was stirred until the mixture was evenly mixed; Add 4 mol of base silane into the container, continue to stir, then add 0.056 mol of trifluoromethanesulfonic acid dropwise, set the stirring speed to 280 rpm, turn on the circulating water, heat to 50 ° C, and react under this condition for 50 min; continue to heat up to 85 ° C, After the solvent is evaporated, the reaction is continued for 6 hours. After the reaction is completed, a large amount of deionized water is used to wash until the washing liquid is PH>5 (measured by a pH meter), and the liquid is separated. based silicone resin (≈360g). Its resin viscosity is 22000mPas (25°C), the ...

Embodiment 2

[0045] A preparation method of liquid propyl silicone resin blend for personal care, the steps are:

[0046] At room temperature, 11.66 mol of deionized water, 7.49 mol of toluene, and 1.52 mol of dehydrated ethanol were added to a three-port reactor equipped with a thermometer, and the mechanical stirring was turned on, and the mixture was stirred until the mixture was evenly mixed; 4 mol of propyltrimethoxysilane was added. Add it to the container, continue stirring, then dropwise add 0.064 mol of trifluoromethanesulfonic acid, set the stirring speed to 280 rpm, turn on the circulating water, heat it to 50 ° C, and react under this condition for 50 min; continue to heat up to 85 ° C, wait to be steamed out After the solvent, the reaction was continued for 6 hours. After the reaction, a large amount of deionized water was used to wash until the pH of the washing solution was > 5 (measured by a pH meter), the liquid was separated, and the propyl silicone resin was obtained by s...

Embodiment 3

[0050] A preparation method of liquid propyl silicone resin blend for personal care, the steps are:

[0051] At room temperature, 11.66 mol of deionized water, 3.745 mol of cyclohexane, 3.745 mol of toluene, and 1.52 mol of absolute ethanol were added to a three-port reactor equipped with a thermometer, mechanical stirring was turned on, and the mixture was stirred uniformly; Add 4 mol of trimethoxysilane to the container, continue to stir, then add 0.08 mol of trifluoromethanesulfonic acid dropwise, set the stirring speed to 280 rpm, turn on the circulating water, heat to 50 ° C, and react under this condition for 50 min; continue to heat up to 85°C, continue to react for 6h after the solvent is evaporated, wash with a large amount of deionized water after the reaction is completed until the pH of the washing solution>5 (measured by a pH meter), separate liquids, and perform short-path distillation (120~160°C, 9~20Pa) , to obtain propyl silicone resin (≈385g). Its resin visc...

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Abstract

The invention provides a preparation method of a liquid propyl silicone resin blend for personal care. The propyl silicon resin provided by the invention is prepared by the following method: n-propyltrimethoxysilane is used as a raw material, and is subjected to hydrolytic polymerization reaction in the presence of water, an organic solvent and an acidic catalyst to obtain the propyl silicon resin. The propyl silicon resin developed and produced by the invention has the excellent characteristics of high viscosity, good thermal stability, water resistance, moisture resistance and the like, and is environment-friendly and non-toxic. The film formed by the resin is still smooth and intact even after being stretched and washed. Propyl groups on a silane chain can be freely bent and rotated and can be blended with D5 or flexible paraffin, so that the product can be endowed with better lubricity, elasticity and flexibility. Besides, the production and emission of highly corrosive and toxic substances in the production process can be reduced by utilizing the process route, the production cost is reduced by recycling the recovered solvent, and the pollution to the environment is avoided.

Description

technical field [0001] The invention belongs to the field of preparation of cosmetic intermediates, in particular to a preparation method of a liquid propyl silicone resin blend for personal care. Background technique [0002] Heart of beauty in everyone. Today's society is an era of "looking at face", people pay more attention to their own appearance, and believe that "face value is justice", thus giving birth to the "face value economy". The arrival of the "face value economy" also means the awakening of consumers' awareness of skin care. The society's ability to accept cosmetics has improved, and the "appearance economy" has exploded, especially the audience of skin care products has become wider and wider, which has brought more market opportunities to my country's cosmetics market. At present, the United States, Japan and South Korea occupy most of the global cosmetics market share, while the Chinese market accounts for no more than 50%. Although the market size of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G77/04C08G77/06A61K8/891A61Q19/08A61Q19/00A61Q1/02A61Q17/04A61Q5/00
CPCC08G77/04C08G77/06A61K8/891A61Q19/08A61Q19/00A61Q1/02A61Q17/04A61Q19/001A61Q5/00
Inventor 陈才虎蒲阳周鹏刘敏文全东任沂杨梅
Owner 陈才虎
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