Process for preparing isooctyl thioglycolate
A technology of isooctyl thioglycolate and isooctyl acetate, which is applied in the field of preparation of isooctyl thioglycolate, can solve the problems of high production cost, high cost of thioglycolic acid, easy oxidation and thermal decomposition of thiol groups, and achieve recovery Effects of shorter time, higher productivity, and reduced energy consumption
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Embodiment 1
[0027] Example 1. A kind of preparation technology of isooctyl thioglycolate, its step is as follows:
[0028] (1) Esterification reaction: first add chloroacetic acid to the reaction kettle, then add isooctyl alcohol and concentrated sulfuric acid as a catalyst, and perform esterification reaction while distilling water under reduced pressure. After the reaction, wash with sodium carbonate and saline solution. Then wash with water, wash the waste water to the waste water collection tank, and the esterification product to the esterification storage tank; open the valve at the bottom of the water separator, pour the water into the waste water tank, and put the remaining ester-alcohol mixture into the next batch; among them: chloroacetic acid , The weight ratio of isooctyl alcohol to catalyst is 800:1000:8;
[0029] (2) Mercaptolation reaction: Measure the esterified product in the esterified product storage tank into the esterified product metering tank and put it into the rea...
Embodiment 2
[0032] Example 2. A kind of preparation technology of isooctyl thioglycolate, its step is as follows:
[0033] (1) Esterification reaction: first add chloroacetic acid to the reaction kettle, then add isooctyl alcohol and concentrated sulfuric acid as a catalyst, and perform esterification reaction while distilling water under reduced pressure. After the reaction, wash with sodium carbonate and saline solution. Then wash with water, wash the waste water to the waste water collection tank, and the esterification product to the esterification storage tank; open the valve at the bottom of the water separator, pour the water into the waste water tank, and put the remaining ester-alcohol mixture into the next batch; among them: chloroacetic acid , the weight ratio of isooctyl alcohol and catalyst is 800: 1150: 10;
[0034] (2) Mercaptolation reaction: Measure the esterified product in the esterified product storage tank into the esterified product metering tank and put it into the...
Embodiment 3
[0037] Example 3. A kind of preparation technology of isooctyl thioglycolate, its step is as follows:
[0038] (1) Esterification reaction: first add chloroacetic acid to the reaction kettle, then add isooctyl alcohol and concentrated sulfuric acid as a catalyst, and perform esterification reaction while distilling water under reduced pressure. After the reaction, wash with sodium carbonate and saline solution. Then wash with water, wash the waste water to the waste water collection tank, and the esterification product to the esterification storage tank; open the valve at the bottom of the water separator, pour the water into the waste water tank, and put the remaining ester-alcohol mixture into the next batch; among them: chloroacetic acid , The weight ratio of isooctyl alcohol to catalyst is 800:1090:9;
[0039](2) Mercaptolation reaction: Measure the esterified product in the esterified product storage tank into the esterified product metering tank and put it into the reac...
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