Aqueous suspension of composite silicone powder, w/o emulsion and cosmetics
A technology of organosilicon powder and aqueous suspension, which is applied in the direction of cosmetics, cosmetics, cosmetic preparations, etc., and can solve the problems of failure to disclose
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example 1
[0137] Water-dispersible e-powders are elastomeric powders that have been treated with a hydrophilizing agent so that they are readily wettable and dispersible in water to form aqueous e-powder dispersions. Below is a list of examples of stable water-dispersible suspensions without or with various additives.
[0138] [Preparation of aqueous suspension of silicone elastomer powder]
[0139] In this example, "Sample 1" and "Sample 2" are composite cured silicone powders consisting of:
[0140] (a) Silicone Elastomer Powder (Dimethicone / Vinyl Dimethicone Crosspolymer),
[0141] (b) Silica
[0142] (c) Butanediol
[0143] The hardness of the elastomer powder in each sample was as follows.
[0144] "Sample 1": JIS A hardness 60
[0145] "Sample 2": JIS A hardness 40.
[0146] "9701" and "9509" are the DOW of available silicone elastomer powders Sales Products.
[0147] "9701" is a blend of (b) silica and (a) silicone elastomer powder and the hardness of the elastomer is ...
example 1-1
[0151] Example 1-1: Aqueous suspension of silicon e-powder without any additives
[0152] Aqueous suspensions of silicone elastomers were prepared at different concentrations of silicone elastomer powder without using other additives (density modifiers or thickeners). The formulations are shown in Table 1.
[0153] also, figure 1is the viscosity of the suspension containing different levels of silicone water dispersible e powder (viscosity test was performed using Brookfield DVII+pro viscometer).
[0154] By using a certain level of silicone water-dispersible e-powder, it is possible to obtain a water-thin stable suspension that combines an elastomeric cool feel with a dry silky, powdery feel. The minimum level to obtain a stable suspension is 10%, but preferably 15%, and the maximum level is 40%, beyond which the suspension is no longer a water-thin suspension. On the other hand, in any concentration, the stability of the aqueous suspension using "9701" or "9509" was ve...
example 1-2
[0163] Example 1-2: Stabilized 10% e-powder aqueous suspension with glycerol (=density regulator)
[0164] Glycerol was added to the water and stirred until a homogeneous solution (=10% glycerol solution) was obtained. The elastomer powder of sample 1 was then added to the solution at a concentration of 10% of the total suspension and mixed by hand. (final viscosity of 28 mPa s) Unlike the 10% aqueous suspension of sample 1 without any additives, the 10% aqueous suspension of sample 1 with 10% glycerol in the aqueous phase was stable even after two weeks at room temperature and uniformly dispersed. (refer to figure 2 bottle No. 1 in
[0165] figure 2 It is shown that by using composite silicone powder (sample 1, composed of dimethicone / vinyl dimethicone crosspolymer (and) silica (and) butanediol) and Comparative aqueous suspensions of other silicone composite powders (marketing products, 9701, 9509) Stability of suspensions prepared after two weeks at room temperature...
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