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Polysiloxane composite particle coated with sunscreen chemical formed by esters of ortho-aminobenzoic acid and derivatives thereof and preparation method of same

A technology of anthranilic acid and chemical sunscreen, applied in the field of polysiloxane composite particles, can solve the problems of skin irritation and low absorption rate, and achieve the effects of reducing irritation, improving stability and stable performance

Inactive Publication Date: 2014-01-01
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Its price is low, but its absorption rate is low, and it has the disadvantages of being irritating to the skin similar to PABA

Method used

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  • Polysiloxane composite particle coated with sunscreen chemical formed by esters of ortho-aminobenzoic acid and derivatives thereof and preparation method of same
  • Polysiloxane composite particle coated with sunscreen chemical formed by esters of ortho-aminobenzoic acid and derivatives thereof and preparation method of same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] A polysiloxane composite particle coated with a chemical sunscreen formed by anthranilate is prepared by the following method:

[0055] (1) Preparation of nanoemulsions containing chemical sunscreens formed from anthranilate

[0056] The nanoemulsion comprising the chemical sunscreen formed by anthranilate is calculated by mass percentage, and its raw material composition and content are as follows:

[0057] Sunscreen 5%

[0058] Emulsifier 5%

[0059] Grease 5%

[0060] Co-emulsion 5%

[0061] The remainder is water;

[0062] Described sunscreen agent is the chemical sunscreen agent formed by menyl anthranilate, the product produced by BASF (BASF) Chemical Co., Ltd.;

[0063] The emulsifier is polyoxyethylene ether (20) sorbitan monostearate-60 (Tween60), a reagent grade product of Sinopharm Group;

[0064] Described grease is stearyl alcohol, the cosmetic grease that BASF (BASF) Chemical Co., Ltd. produces;

[0065] Described co-emulsifier is propylene glycol, ...

Embodiment 2

[0085] A polysiloxane composite particle coated with a chemical sunscreen formed by trimethylcyclohexyl N-acetyl anthranilate is prepared by the following method:

[0086] (1) Preparation of nanoemulsion containing chemical sunscreen agent formed by trimethylcyclohexyl N-acetyl anthranilate

[0087] The nanoemulsion of the chemical sunscreen agent formed by N-acetyl anthranilate trimethylcyclohexyl is calculated by mass percentage, and its raw material composition and content are as follows:

[0088] Sunscreen 0.1%

[0089] Emulsifier 0.1%

[0090] Grease 0.1%

[0091] Co-emulsion 0.1%

[0092] The remainder is water;

[0093] The sunscreen agent is a chemical sunscreen agent formed by trimethylcyclohexyl N-acetyl anthranilate, a product produced by BASF (BASF) Chemical Co., Ltd.;

[0094] The emulsifier is polyoxyethylene ether (20) sorbitan monooleate-80 (tween 80), a reagent grade product of Sinopharm Group;

[0095]Described grease is white oil, the product that Hang...

Embodiment 3

[0105] A polysiloxane composite particle coated with a chemical sunscreen formed by menthyl anthranilate is prepared by the following method:

[0106] (1) Preparation of nanoemulsions containing chemical sunscreens formed from menthyl anthranilate

[0107] The nanoemulsion of the chemical sunscreen agent formed by menthyl anthranilate is calculated by mass percentage, and its raw material composition and content are as follows:

[0108] Sunscreen 10%

[0109] Emulsifier 20%

[0110] Grease 10%

[0111] Co-emulsion 20%

[0112] The remainder is water;

[0113] The sunscreen is a chemical sunscreen formed from menthyl anthranilate, a product produced by BASF (BASF) Chemical Co., Ltd.;

[0114] The emulsifier is polyoxyethylene (20) sorbitan tristearate (Tween-65), a reagent grade product of Sinopharm;

[0115] Described grease is isooctyl palmitate, the cosmetic grease that BASF (BASF) Chemical Co., Ltd. produces;

[0116] Described auxiliary emulsifier is isopropyl alcoh...

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Abstract

The invention discloses a polysiloxane composite particle coated with a sunscreen chemical formed by esters of ortho-aminobenzoic acid or derivatives thereof. A preparation method of the composite particle comprises the following steps: firstly, uniformly dispersing a sunscreen chemical formed by esters of ortho-aminobenzoic acid or derivatives thereof, emulsifiers, oil and fat and co-emulsifiers, which are oil phase components; then, homogenizing water while adding the oil phase components, stirring thoroughly and cooling down to room temperature, to obtain a nanoemulsion containing the sunscreen chemical formed by esters of ortho-aminobenzoic acid or derivatives thereof; subsequently, preparing a solution of organosilicon monomer hydrolysates, mixing the solution with the nanoemulsion containing the sunscreen chemical formed by esters of ortho-aminobenzoic acid or derivatives thereof, adjusting pH to 7.5 to 13.5, and allowing reactions to take place for 0.1 to 24 h at 0 DEG C to 100 DEG C with a rotational speed of 10 r / min to 1000 r / min, and subjecting the reaction product to washing, centrifuging and drying treatment, to obtain the polysiloxane composite nanoparticle coated with the sunscreen chemical formed by esters of ortho-aminobenzoic acid or derivatives thereof.

Description

technical field [0001] The present invention relates to a polysiloxane composite particle coated with a chemical sunscreen agent, more specifically to a polysiloxane composite particle of a chemical sunscreen agent coated with esters of anthranilic acid or its derivatives. Particles and methods for their preparation. Background technique [0002] Chemical sunscreens mainly refer to organic compounds that can absorb harmful ultraviolet radiation, usually called chemical ultraviolet absorbers. According to the different wavelength bands of protective radiation, UV (ultraviolet) absorbers can be divided into two types: UVA (living ultraviolet rays) and UVB (outdoor ultraviolet rays). From the chemical structure, it can be divided into p-aminobenzoic acid and its esters, salicylate and its derivatives, anthranilate, benzophenone and its derivatives, p-methoxycinnamic acid, methane derivatives and camphor derivatives. The chemical sunscreens used in cosmetics will have certain...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61K8/92A61K8/89A61K8/44A61Q17/04
Inventor 张婉萍朱海洋李牧牛文霞
Owner SHANGHAI INST OF TECH