Octadecyl acrylate synthesis
- Product Name:Octadecyl acrylate
- CAS Number:4813-57-4
- Molecular formula:C21H40O2
- Molecular Weight:324.54
112-92-5
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79-10-7
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4813-57-4
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Yield:4813-57-4 95.7%
Reaction Conditions:
with 10H-phenothiazine;hydroquinone at 110 - 130; for 4.5 h;Temperature;
Steps:
2-7 Example 7
First, 270 parts by mass of stearyl alcohol is added to the reaction vessel, the temperature is appropriately raised to melt it completely, and then 1 part by mass of hydroquinone, 0.3 parts by mass of phenothiazine, and 54 parts by mass of acrylic acid (alkyd molar ratio of 1 0.75), add 1.5 parts by mass of sulfonic acid type acrylic cation exchange resin with 8% cross-linking degree, heat the mixture to 110°C and reflux for 2h, and separate the water, then continue under reduced pressure Reaction for 0.5h. Add 39.6 parts by mass of acrylic acid (alkyd molar ratio 1:0.55), and raise the temperature to 130°C to react for 2h, and separate the water, then continue the reaction under reduced pressure for 1h, and distill out the remaining reaction water and excess in the material Acrylic. Then the temperature was lowered to 105°C, and the strong acid cation exchange resin was separated by filtration. The filtrate is then alkali washed. The process is as follows: first add 40 parts by mass of water, then add 20 parts by mass of saturated sodium chloride solution, and finally add 15 parts by mass of sodium carbonate lye with a concentration of 15%, stir for 30 minutes and then stand still Liquid separation. After alkaline washing, the product is washed with water to neutrality,After decolorization and drying treatment at 65,Obtained colorless and transparent stearyl acrylate. The yield converted to stearyl alcohol is 96.1%, the product purity is 99.07%, and the acidity is 0.1 mgKOH/g.
References:
Zhejiang Kant, Immanuel New Materials Co., Ltd.;Chen Jianlin CN112174817, 2021, a Location in patent:Paragraph 0043-0054
112-92-5
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814-68-6
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$21.21/5gm:
4813-57-4
275 suppliers
$5.00/25g
