Fragrance-containing capsule and cosmetic in which said capsules are blended
A technology for cosmetics and fragrances, which is applied in the fields of cosmetics, cosmetic preparations, essential oils/flavors, etc., can solve problems such as no way of knowing, and achieve the effect of high stability
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[0067] Examples are given below to further describe the present invention in detail, but the present invention is not limited by the examples. Unless otherwise specified, the "mixing amount" is represented by "mass %" of the component in which it is mixed.
[0068] Before describing the examples, the evaluation method of the test used in the present invention will be described.
[0069] Evaluation (1): Average particle diameter
[0070] Using a laser diffraction particle size distribution measuring device (HEROS & RODOS, SYMPATEC company) as a measuring device, utilize a wet measuring method to measure each sample, and use the volume average diameter D 50 value as the average particle size.
[0071] Evaluation (2): Encapsulation evaluation
[0072] Each sample was observed visually and / or by SEM. After that, the aroma was evaluated after each sample was rubbed. It should be noted that rubbing refers to rubbing twice with the same strength by hand.
[0073] A: The sample ...
preparation example 1-1
[0100] prepared uniformly dissolved 66.5g methyl methacrylate, 3.5g ethylene glycol dimethacrylate, 0.3g 2,2'-azobis(2,4-dimethylvaleronitrile), 15g squalane, 15 g oily mixture of fragrance (limonene). An aqueous mixture in which 500 g of water and 4 g of methylcellulose were uniformly dissolved was prepared.
[0101] Next, a water-based dispersion medium in which the oil-based mixture and the water-based mixture were suspended was prepared using a homomixer, then placed in a pressure cooker, and reacted at 60° C. and 0.2 MPa for 12 hours. The reactant was filtered and dried to obtain granules.
preparation example 1-2
[0103] Preparation Example 1-2 was prepared in the same manner as the above-mentioned Preparation Example 1-1 according to the mixing amount in Table 1.
[0104] [Table 1]
[0105]
[0106] According to Preparation Example 1-1 and figure 1 It was found that encapsulation was not possible with this composition, and powder was formed. In addition, limonene is incorporated into the wall material by reacting with polymethyl methacrylate, and the aroma of limonene cannot be felt in this state, and even if it is rubbed, the aroma of limonene cannot be felt.
[0107] In addition, from Preparation Example 1-2, it was found that even when the compounding amount of the content (limonene) was increased, the separation of the powder could not be performed.
[0108] Therefore, the present inventors conducted research using various fragrances as core substances. That is, an attempt was made to prepare capsules having the compositions shown in Table 2 below in the same manner as in Pre...
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