Vaseline-like composition, and cosmetic preparation
A technology of petroleum jelly and composition, which is applied in the field of petroleum jelly composition, which can solve the problems of unsatisfactory skin spreadability and storage stability, and achieve the effect of excellent spreadability, excellent skin compliance and low viscosity
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[0115] Hereinafter, the present invention will be described in more detail by showing examples and comparative examples of the present invention, but the present invention is not limited to these examples. In addition, hereinafter, unless otherwise stated, "%" means "% (mass)".
[0116] Synthesis example 1~3 (poly 12-hydroxystearic acid)
Synthetic example 1
[0118] 500 g of 12-hydroxystearic acid (manufactured by Kawaken Fine Chemicals Co., Ltd., trade name: hydroxystearic acid) was added to a 1 L four-necked flask equipped with a stirrer, a thermometer, a nitrogen blowing tube, and a moisture separator, and 0.5 g of tin chloride as a catalyst was reacted at a temperature of 200° C. for 15 hours while removing generated water under a nitrogen stream. After the reaction was completed, the catalyst was removed by filtration, followed by decolorization using activated carbon, and deodorization was performed by blowing water vapor under reduced pressure. The acid value of the obtained polymer was measured, and as a result, poly-12-hydroxystearic acid of Synthesis Example 1 was obtained with an acid value of 33 mgKOH / g, an average molecular weight calculated from the acid value of 1700, and an average degree of polymerization calculated from the average molecular weight of 6. (yield 430g).
Synthetic example 2
[0120] 500 g of 12-hydroxystearic acid HP (manufactured by Kokura Gosei Co., Ltd., trade name: 12-hydrogen acid HP) was added to a 1 L four-necked flask equipped with a stirrer, a thermometer, a nitrogen blowing tube, and a moisture separator, and With 0.1% of tin chloride as a catalyst, the reaction was carried out at a temperature of 200° C. for 15 hours while removing generated water under a nitrogen stream. After the reaction was completed, the catalyst was removed by filtration, followed by decolorization using activated carbon, and deodorization was performed by blowing water vapor under reduced pressure. The acid value of the obtained polymer was measured, and as a result, poly-12-hydroxystearic acid of Synthesis Example 2 was obtained with an acid value of 20 mgKOH / g, an average molecular weight calculated from the acid value of 2820, and an average degree of polymerization calculated from the average molecular weight of 10. (yield 410g).
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