Preservative for cosmetics and preparation method for preservative

Abstract

The invention discloses a preservative for cosmetics and a preparation method for the preservative. The preservative is prepared from the following ingredients in percentage by weight: 10%-40% of thymol, 20%-70% of carvacrol salt, 1%-20% of ethyl cellulose, 1%-20% of methyl cellulose, 2%-10% of plasticizer and 0.5%-20% of stabilizer. The invention belongs to the technical field of cosmetics. According to the preservative for the cosmetics and the preparation method for the preservative, provided by the invention, the preservative has an excellent antibacterial effect, is moderate to skin and then can be qualified as an antibacterial agent of skin appliances; and meanwhile, the preparation method has the effects of simple procedures and readily available raw materials.

Description

technical field

[0001] The invention belongs to the technical field of cosmetics, and specifically refers to a preservative for cosmetics and a preparation method thereof. Background technique

[0002] Along with the improvement of people's living standards and the pursuit of beauty, cosmetics become a necessity and are more and more favored by people, especially ladies. Cosmetics refer to chemical industrial products or fine chemical products that clean, maintain, beautify, modify, change appearance, correct human body odor, and maintain good condition on the surface of the human body such as skin, hair, nails, lips and teeth by smearing and spraying. Cosmetic ingredients mainly include matrix raw materials and additives. As the basic raw materials of cosmetics, the matrix plays a major role, including oils, waxes, and powdery raw materials, etc.; additives play a role in stabilizing molding, etc. composition etc. Cosmetic preservatives refer to substances that have a sus...

Examples

preparation example Construction

[0019] The present invention also provides a preparation method of a preservative for cosmetics, comprising:

[0020] 1) After mixing ethyl cellulose and methyl cellulose, add plasticizer and stir, when it is in a molten state, add stability to form an oil phase system, add a small amount of alkaline aqueous solution until the pH is 7-9, and continue stirring To form a colloid in which water is dispersed in the polymer colloid;

[0021] 2) Thymol is added to the colloid and mixed evenly, and the resulting mixture is put into a fluidized bed at 32-37°C for coating to obtain ultra-micron-sized particles;

[0022] 3) mixing the obtained granules with carvacrol salt to obtain the preservative for cosmetics.

Embodiment 1

[0025] Mix 15g of ethyl cellulose and 15g of methyl cellulose, add 8g of diethyl citrate to plasticize, when it is molten, add 20g of emulsified silicone oil to form an oil phase system, then slowly add alkaline aqueous solution to pH 7-9, form a colloid in which water is dispersed in the polymer colloid under stirring. 35g of thymol is added into the colloid and mixed evenly, and the resulting mixture is put into a fluidized bed for coating to obtain ultramicron-sized particles. Get 50g of disodium carvacrol phosphate and mix with the obtained granules to obtain the preservative for cosmetics.

Embodiment 2

[0027] Mix 20g of ethyl cellulose and 20g of methyl cellulose, add 10g of dibutyl sebacate for plasticization, add 20g of oleic acid to form an oil phase system when it is in a molten state, and then slowly add alkaline aqueous solution to pH 7-9, form a colloid in which water is dispersed in the polymer colloid under stirring. 40 g of thymol was added into the colloid and mixed evenly, and the resulting mixture was put into a fluidized bed at 35° C. for coating to obtain supermicron-sized particles. The obtained granules are mixed with 60 g of disodium carvacrol phosphate to obtain the preservative for cosmetics.

technical field

[0001] The invention belongs to the technical field of cosmetics, and specifically refers to a preservative for cosmetics and a preparation method thereof. Background technique

[0002] Along with the improvement of people's living standards and the pursuit of beauty, cosmetics become a necessity and are more and more favored by people, especially ladies. Cosmetics refer to chemical industrial products or fine chemical products that clean, maintain, beautify, modify, change appearance, correct human body odor, and maintain good condition on the surface of the human body such as skin, hair, nails, lips and teeth by smearing and spraying. Cosmetic ingredients mainly include matrix raw materials and additives. As the basic raw materials of cosmetics, the matrix plays a major role, including oils, waxes, and powdery raw materials, etc.; additives play a role in stabilizing molding, etc. composition etc. Cosmetic preservatives refer to substances that have a sus...

Examples

preparation example Construction

[0019] The present invention also provides a preparation method of a preservative for cosmetics, comprising:

[0020] 1) After mixing ethyl cellulose and methyl cellulose, add plasticizer and stir, when it is in a molten state, add stability to form an oil phase system, add a small amount of alkaline aqueous solution until the pH is 7-9, and continue stirring To form a colloid in which water is dispersed in the polymer colloid;

[0021] 2) Thymol is added to the colloid and mixed evenly, and the resulting mixture is put into a fluidized bed at 32-37°C for coating to obtain ultra-micron-sized particles;

[0022] 3) mixing the obtained granules with carvacrol salt to obtain the preservative for cosmetics.

Embodiment 1

[0025] Mix 15g of ethyl cellulose and 15g of methyl cellulose, add 8g of diethyl citrate to plasticize, when it is molten, add 20g of emulsified silicone oil to form an oil phase system, then slowly add alkaline aqueous solution to pH 7-9, form a colloid in which water is dispersed in the polymer colloid under stirring. 35g of thymol is added into the colloid and mixed evenly, and the resulting mixture is put into a fluidized bed for coating to obtain ultramicron-sized particles. Get 50g of disodium carvacrol phosphate and mix with the obtained granules to obtain the preservative for cosmetics.

Embodiment 2

[0027] Mix 20g of ethyl cellulose and 20g of methyl cellulose, add 10g of dibutyl sebacate for plasticization, add 20g of oleic acid to form an oil phase system when it is in a molten state, and then slowly add alkaline aqueous solution to pH 7-9, form a colloid in which water is dispersed in the polymer colloid under stirring. 40 g of thymol was added into the colloid and mixed evenly, and the resulting mixture was put into a fluidized bed at 35° C. for coating to obtain supermicron-sized particles. The obtained granules are mixed with 60 g of disodium carvacrol phosphate to obtain the preservative for cosmetics.