JPH0249285B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a beauty cleansing agent, and more particularly to a creamy beauty cleansing agent based on polyethylene glycol.

For beauty cleansers used for face and hair washing, cream-type products are preferred over solid or liquid products for ease of use. The cleaning agent foams during manufacturing, making it difficult to remove air bubbles from the product.

By adding approximately the same amount of water to the constituent ingredients and mixing them under reduced pressure to form a product, the air bubbles mixed into the product can be eliminated by returning the pressure to reduced pressure, but mixing under reduced pressure The effervescence of time is enormous,
Since the volume of the product increases significantly, the amount of ingredients charged has to be reduced, and therefore the output of the product also has to be much smaller compared to the volume of the mixing vessel.

As a result of intensive research to eliminate these drawbacks, the present inventors have found that the viscosity of the product at 20°C is 5000~
By setting the composition ratio of polyethylene glycol and surfactant to 100,000 centipoise, we succeeded in significantly reducing foaming during mixing under reduced pressure, and completed the present invention.

The present invention is a beauty cleanser consisting of 55 to 85 parts by weight of polyethylene glycol with a molecular weight of 280 to 9,000, 10 to 40 parts by weight of a surfactant, and 0 to 10 parts by weight of water, and having a viscosity of 5,000 to 100,000 centipoise at 20°C. be.

In the present invention, polyethylene glycol having a molecular weight of 280 to 9000 is used, for example, polyethylene glycol 300, polyethylene glycol 400, polyethylene glycol 600, polyethylene glycol 1500, polyethylene glycol 1540, polyethylene glycol
4,000, 6,000, etc., and one or more of these is used in an amount of 55 to 85 parts by weight, preferably 60 to 80 parts by weight.

Surfactant refers to surfactants that can be utilized in the production of beauty cleansers, but above all anionic surfactants (e.g. sodium laurate, sodium myristate, sodium oleate, sodium lauryl sulfate, sodium myristyl sulfate) , sodium cetyl sulfate, sodium stearyl sulfate, etc.) is used in an amount of 10 to 40 parts by weight, preferably 15 to 30 parts by weight.

By appropriately blending the polyethylene glycol and the surfactant within the above range, the viscosity of the product at 20° C. can be adjusted and maintained at 5,000 to 100,000 centipoise.

Polyethylene glycol generates a little heat when dissolved in water, so when using a polyethylene glycol-based beauty cleansing agent with water, it may cause some discomfort to the user, but this should be done in advance. This problem can be solved by incorporating 10 parts by weight or less, preferably 3 to 5 parts by weight, of water into the beauty cleansing agent. When polyethylene glycol and surfactant are mixed under heating and reduced pressure, the presence of water causes foaming, so it is desirable to add water in the final stage of mixing after the temperature has returned to room temperature.

In addition, appropriate amounts of fragrances, bactericides, opacifiers, clarifying agents, pigments, thickeners, foaming aids, etc. can be added, if necessary.

Moreover, in the present invention, the beauty cleansing agent means a cleansing agent for beauty purposes such as shampoo and facial cleansing agent.

The beauty cleansing agent of the present invention can be produced, for example, as follows.

First, a surfactant is dispersed in low molecular weight polyethylene glycol, then high molecular weight polyethylene glycol is added thereto, and the mixture is stirred and mixed under reduced pressure and heat. After the surfactant has been dispersed in the polyethylene glycol, it is cooled to room temperature while stirring, water, fragrance, disinfectant and other necessary ingredients are added and mixed as necessary, and the pressure is reduced to normal pressure. The cosmetic cleansing agent of the present invention is obtained by reconstitution.

Since the beauty cleansing agent of the present invention has almost no foaming during manufacturing, it is easy to manufacture, and the production amount per unit volume of the mixing container is significantly increased compared to conventional methods, and it also has an excellent usability.

The present invention will be specifically described below with reference to Examples.

Example 1 400g of sodium lauryl sulfate was well dispersed in 1100g of polyethylene glycol 400, 390g of polyethylene glycol 4000 was added thereto, and the mixture was heated under reduced pressure.
Stir at 55°C. Disperse sodium lauryl sulfate uniformly in polyethylene glycol, cool it to room temperature while stirring, and add 100% purified water to this.
After adding g and 10 g of fragrance and stirring well, the pressure was returned to normal pressure to obtain 2000 g of facial cleansing cream. The viscosity at 20°C was 9000 centipoise.

This facial cleansing cream did not contain any air bubbles, and as a result of a test conducted on 100 housewives,
It was recognized that the usability was excellent.

Example 2 150g of sodium lauryl sulfate was mixed with 300g of polyethylene glycol and 900g of polyethylene glycol.
After the mixture was well dispersed in a mixture of 300 g of 400, 300 g of polyethylene glycol 4000, 100 g of polyethylene glycol 6000, and 100 g of lauric acid diethanolamide were added thereto, and the mixture was heated to 60° C. with stirring under reduced pressure.

After uniformly dispersing the surfactant, cool it to room temperature while stirring, add 140g of purified water and 10g of fragrance, stir well, then return the pressure to normal pressure and add 2000g of shampoo for hair washing. Obtained.
The viscosity at 20°C was 13000 centipoise.

This cream shampoo for hair washing did not contain any air bubbles, and as a result of a test conducted on 100 housewives, it was found to have an excellent feeling of use.

Claims (1)

[Claims] 1 Polyethylene glycol with a molecular weight of 280 to 9000
55 to 85 parts by weight, 10 to 40 parts by weight of surfactant, and 0 to 10 parts by weight of water, and has a viscosity of 5000 at 20°C.
A beauty cleanser that is ~100,000 centipoise.