Oily ingredient for cosmetic prepn. and cosmetic prepn.
A technology of cosmetics and oils, applied in the direction of cosmetic preparations, cosmetics, cosmetics, etc., can solve the problems of smooth hair, insufficient moisturizing feeling, unsatisfactory practical application, insufficient moisturizing and smooth feeling, etc., and achieve solubility excellent effect
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[0107] 160.3 g of 2,4-diethyl-1,5-pentanediol (trade name: Kyowa Diol PD-9, manufactured by Kyowa Oil & Chemical Co., Ltd., purity 93.9%), 156.6 g of potassium hydroxide (purity 86%), 102.2 g of 12 carbon-atom alkane mixtures (trade name: Kyowa Sol C1200-H, manufactured by Kyowa Oil Chemical Co., Ltd.) are packed into a 1L electric furnace equipped with a reflux device, a pressure control valve and a temperature control In a nickel autoclave, heat and stir at 1Mpa. The hydrogen gas produced was measured with a gas flow meter to track the progress of the reaction. It was proved that gas was generated from around 230°C, and the reaction was continued by keeping the temperature at 250-270°C. From reaching 250° C. until 3.5 hours later, 89.4 L of hydrogen gas was produced. Further, the reaction was continued for 30 minutes, during which 0.8 L of hydrogen gas was produced, the hydrogen production was consistent with the theoretical value, and the reaction rate was 100%. After th...
Embodiment 1
[0114] Embodiment 1: 2, the synthesis of 4-diethylglutaric acid diisobutyl ester (compound 1)
[0115] Put 2,4-diethylglutaric acid (94.74g), isobutanol (74.84g) and toluene (168.6g) into the reaction flask, after stirring well, add p-toluenesulfonic acid monohydrate (3.80g ), reflux reaction for 7 hours. After cooling to room temperature, it was neutralized with magnesium oxide, and the reaction solution was washed with water. The washed reaction solution was evaporated to remove the solvent at 80° C. under vacuum to obtain 143 g of compound 1 (yield: 93.8%). The physical property values of this compound are as follows. 1 H-NMR (CDCl 3 , δppm); 3.86(m, 4H), 2.31(m, 2H), 1.93(m, 2H), 1.60(m, 6H), 0.95(m, 18H)IR(cm -1 ); 2974, 2952, 2889 (C-H), 1748 (C=O), 1467, 1383, 1253, 1166 (COOCH 2 CH(CH 3 ) 2 )
[0116] MS (m / z); 301 (M + )
[0117] Density (kg / m 3 );922(25℃)
Embodiment 2
[0118] Example 2 Synthesis of 2,4-diethylglutarate diisobutyl (compound 2)
[0119]Put 2,4-diethylglutaric acid (94.71g), n-butanol (74.20g) and toluene (168.3g) into the reaction flask, after stirring well, add p-toluenesulfonic acid monohydrate (3.80g ), reflux reaction for 7 hours. After being cooled to room temperature, neutralize with 4.8% by weight of sodium hydroxide aqueous solution, wash the reaction solution with water, the reaction solution after water washing is under vacuum, at 100 ℃ low boiling solvent removal, obtains 111g compound 2 (yield: 73.4%) . The physical property values of this compound are as follows. 1 H-NMR (CDCl 3 , δppm); 4.07(m, 4H), 2.29(m, 2H), 1.94-1.36(m, 14H), 0.88(m, 12H)IR(cm -1 ); 2973, 2947, 2888(C-H), 1747(C=O), 1465, 1391, 1261, 1221, 1164(COO(CH 2 ) 3 CH 3 )
[0120] MS (m / z); 301 (M + )
[0121] Density (kg / m 3 ); 929 (25°C)
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