1,2-Bis(7-Methyloctyl)cyclohexyl-1,2-dicarboxylate synthesis
- Product Name:1,2-Bis(7-Methyloctyl)cyclohexyl-1,2-dicarboxylate
- CAS Number:318292-43-2
- Molecular formula:C26H48O4
- Molecular Weight:424.66
2430-22-0
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318292-43-2
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Yield:318292-43-2 98.5%
Reaction Conditions:
with acetic anhydride at 180 - 230; under 760.051 Torr; for 3 h;Temperature;
Steps:
1 Example 1
Proportionally reactor was charged with hexahydrophthalic anhydride, Isononyl alcohol, Catalyst acetic anhydride, among them:Hexahydrophthalic anhydride and isononyl alcohol molar ratio of 1: 2.3, Acetic anhydride is added in an amount of 5% by mass of hexahydrophthalic anhydride, Under atmospheric pressure with heating and stirring, Heating to 180 deg C reflux start timing, Continue to heat up the reaction, The material 1 was obtained after being maintained at 230 ° C for 3 h, Material 1 is diisononyl cyclohexane-1,2-dicarboxylate crude; The material 1 after falling film evaporator, Excess alcohol was flashed off at a negative pressure of -0.06 MPa, Residence time is 0.002 h, Get material 2, Into the stripping tank; In the stripping tank access to water vapor and nitrogen bubbling, Steamed material 2 low molecular weight impurities, Get material 3, Into the decolorization kettle. Stripping tank pressure control at -0.05MPa, Stripper temperature control at 80 ~ 90 deg C, Material 2 in the stripping tank dwell time control in 0.5 h; 4 )In the decolorization kettle material 3 mass 3% activated carbon, Stir at a temperature of 90 ° C for 1.5 h, filter, The final product was diisononyl cyclohexane-1,2-dicarboxylate, Products for the colorless transparent oily liquid, Yield 98.5% Purity 99.8%.
References:
CN106565470,2017,A Location in patent:Paragraph 0020; 0021; 0022; 0023; 0024; 0025
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$180.00/250mg
1687-30-5
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318292-43-2
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20548-62-3
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318292-43-2
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2430-22-0
42 suppliers
$180.00/250mg
318292-43-2
8 suppliers
inquiry