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Sunscreen spray containing solid lipid microparticles and preparation method of sunscreen spray

A sunscreen spray and solid lipid technology, which is applied in skin care preparations, pharmaceutical formulations, cosmetic preparations, etc., can solve problems such as thickening, low solid sunscreen content, and water-oil separation, so as to reduce penetration, Improve centrifugation and low temperature stability, reduce irritation effect

Inactive Publication Date: 2014-07-16
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented inventor describes an improved method for applying liquid crystal on human skins without causing damage from being directly exposed during application. It achieves this by controlling how much material gets absorbed into tiny droplets while still allowing enough space inside them before they hit their surface. By reducing skin sensitivity caused by exposure to solar rays, these methods improve durability over long periods of use compared to existing products.

Problems solved by technology

The technical problem addressed in this patented text relates to improving sunscreen compositions without causing separation or sedimentiness during long periods due to their high concentration of solids (solid) nanopartures like silicone oils).

Method used

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  • Sunscreen spray containing solid lipid microparticles and preparation method of sunscreen spray

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] A kind of sunscreen spray containing solid lipid particles, calculated according to the total amount of 100g, its composition and content are as follows:

[0061] Solid fat 1g (1%)

[0062] Liquid fat 1g (1%)

[0063] Solid emulsifier 3g (3%)

[0064] Solid sunscreen 1g (1%)

[0065] Liquid sunscreen 3g (3%)

[0066] Humectant 0.05g (0.05%)

[0067] Rheology modifier 0.2g (0.2%)

[0068] Preservatives 2g (2%)

[0069] Flavor 0.1g(0.1%)

[0070] The balance is deionized water;

[0071] Wherein the solid lipid is glyceryl monostearate in glycerides;

[0072] The liquid oil is caprylic acid / capric triglyceride in synthetic oil;

[0073] Described solid emulsifier is ceteareth-25;

[0074] Described solid sunscreen is butylmethoxydibenzoylmethane;

[0075] The liquid sunscreen is octyl methoxycinnamate;

[0076] The rheology modifier is Carbomer-U20;

[0077] Described humectant is sodium hyaluronate in macromolecule biochemical class;

[0078] The preservativ...

Embodiment 2

[0093] A kind of sunscreen spray containing solid lipid particles, calculated according to the total amount of 100g, its composition and content are as follows:

[0094] Solid fat 5g (5%)

[0095] Liquid fat 5g (5%)

[0096] Solid emulsifier 7g (7%)

[0097] Solid sunscreen 3g (3%)

[0098] Liquid sunscreen 4g (4%)

[0099] Humectant 5g (5%)

[0100] Rheology modifier 0.25g (0.25%)

[0101] Preservatives 0.2g (0.2%)

[0102] Flavor 0.2g(0.2%)

[0103] The balance is deionized water;

[0104] Wherein the solid lipid is palmitic acid in saturated fatty acids;

[0105] The liquid oil is macadamia nut oil in vegetable oil;

[0106] Described solid emulsifier is steareth-21;

[0107] Described solid sunscreen is butylmethoxydibenzoylmethane;

[0108] The liquid sunscreen is octyl methoxycinnamate;

[0109] Described rheology modifier is xanthan gum;

[0110] Described humectant is glycerin;

[0111] The preservative is diazolidinyl urea;

[0112] Described essence is...

Embodiment 3

[0115] A kind of sunscreen spray containing solid lipid particles, calculated according to the total amount of 100g, its composition and content are as follows:

[0116] Solid fat 5g (5.0%)

[0117] Liquid oil 8g (8.0%)

[0118] Solid emulsifier 7g (7.0%)

[0119] Solid sunscreen 5g(5.0%)

[0120] Liquid sunscreen 8g (8.0%)

[0121] Humectant 10g(10.0%)

[0122] Rheology modifier 0.4g (0.4%)

[0123] Preservatives 0.3g (0.3%)

[0124] Flavor 0.4g(0.4%)

[0125] The balance is deionized water;

[0126] Wherein the solid lipid is cetyl palmitate in wax;

[0127] The liquid oil is isooctyl palmitate in synthetic oil;

[0128] Described solid emulsifier is PEG-20 glyceryl tribehenate;

[0129] The solid sunscreen is 2-hydroxyl-4-methoxybenzophenone-5-sulfonic acid;

[0130] The liquid sunscreen is benzyl salicylate;

[0131] The rheology modifier is polyacrylate-1 cross-linked polymer;

[0132] Described humectant is propylene glycol;

[0133] The preservative is dia...

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Abstract

The invention discloses a sunscreen spray containing solid lipid microparticles and a preparation method of the sunscreen spray. The sunscreen spray containing solid lipid microparticles consists of 1-20% of solid grease, 1-20% of liquid grease, 3-15% of a solid emulsifier, 1-15% of a solid sun-screening agent, 3-25% of a liquid sun-screening agent, 0.05-10% of a wetting agent, 0.2-5.0% of a rheolobic modifier, 0.2-2.0% of a preservative, 0.1-0.5% of essence and the balance of deionized water. The preparation method comprises the following steps: dispersing an oil phase system consisting of the solid grease, the liquid grease, the solid emulsifier, the solid sun-screening agent and the liquid solid sun-screening agent with the wetting agent to an aqueous phase formed by deionized water, and mixing and homogenizing for 4 minutes to obtain a system; carrying ultrasonic treatment on the system for 6-15 minutes; then, adding the rheolobic modifier while stirring, and cooling to 40-60 DEG C and adding the preservative and essence; and then stirring and cooling to room temperature to obtain the sunscreen spray containing solid lipid microparticles.

Description

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Claims

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Application Information

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Owner SHANGHAI INST OF TECH
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