Cellulose acetate particles, method for producing same, filler, cosmetic, and daily necessity
A technology of cellulose acetate and cellulose, applied in cosmetic preparations, cosmetics, cosmetic preparations and other directions, can solve the problems that the application has not been disclosed.
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Embodiment 1
[0139] (a) Process
[0140] To 4.8 g of cyclohexanone, 0.2 g of cellulose diacetate (manufactured by Daicel: L-20, degree of acetylation: 55% to 56%) was added and stirred. Furthermore, after heating up, stirring was carried out at 60° C. for 3 hours or more to dissolve cellulose diacetate to prepare a cellulose acetate solution having a cellulose diacetate concentration of 4% by weight, which was used as a dispersed phase.
[0141] (b) Process
[0142] 0.1 g of surfactant sodium dodecylbenzenesulfonate and 3.5 g of cyclohexanone were added to 50 g of pure water and stirred. Furthermore, an aqueous medium was prepared by raising the temperature to 60° C., and this was used as a continuous phase.
[0143] The dispersed phase obtained above was preheated to 60° C., and supplied to the inner cylinder rotating device at 1 mL per minute using a syringe pump (high-pressure microfeeder (microfeeder) JP-H / manufactured by Furue Science Co., Ltd.) (Inner cylinder outer diameter 78mm,...
Embodiment 2
[0154] Cellulose diacetate particles were obtained in the same manner as in Example 1 except for changing the pitch.
[0155] The results of Example 1 and Example 2 are shown in Table 1 below. According to Table 1, the larger the pitch, the larger the particle diameter and CV value of the obtained cellulose diacetate particles tend to be.
[0156] [Table 1]
[0157]
Embodiment 3～ Embodiment 7
[0159] Cellulose diacetate particles were obtained in the same manner as in Example 1 except for changing the rotation speed of the inner cylinder and the emulsification time.
[0160] The results of Examples 3 to 7 are shown in Table 2 below. From Table 2, it can be seen that the larger the rotation speed of the inner cylinder, the smaller the particle diameter and CV value of the obtained cellulose diacetate particles tend to be. In addition, it can be said that the longer the emulsification time, the smaller the particle size of the obtained cellulose diacetate particles tends to be.
[0161] [Table 2]
[0162]
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