Dimer fatty acid and synthetic method thereof
A technology of dimer fatty acid and synthesis method, which is applied in the direction of dry oil polymerization, lubricating composition, petroleum industry, etc., can solve the problems of high cost of separation and purification, large amount of catalyst addition, high equipment requirements, etc., and achieve good product quality and improved Yield and wide range of applications
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Embodiment 1
[0027] Commercial tungoleic acid (purchased from Anhui Ruifengde Oil Deep Processing Co., Ltd., model: T160) was used, linoleic acid was used as a dispersant, and tert-butylhydroquinone was used as a polymerization inhibitor.
[0028] Take 100g of dispersant and 0.5g of polymerization inhibitor, put them in a 250mL four-necked flask, stir while purging with nitrogen, the stirring rate is 300rpm, purging with nitrogen for 30min, raising the temperature to 260°C, according to the dilution rate of 0.5h -1 100 g of linoleic acid was fed in stream for 2 hours. After the feed was completed, the reaction was maintained for 2 hours, the heating was stopped, and the mixture was cooled to room temperature in ice water to obtain a dimer acid product. As determined by GPC, the dimer acid content was 75.62%, and the trimer acid content was 7.01%.
Embodiment 2
[0030] Commercial tungoleic acid (purchased from Anhui Ruifengde Oil Deep Processing Co., Ltd., model: T155) was used, linoleic acid was used as a dispersant, and tert-butylhydroquinone was used as a polymerization inhibitor.
[0031] Take 100g of dispersant and 0.5g of polymerization inhibitor, put them in a 250mL four-necked flask, stir while purging with nitrogen, the stirring rate is 300rpm, purging with nitrogen for 30min, raising the temperature to 2260°C, according to the dilution rate of 0.5h -1 100 g of linoleic acid was fed in stream for 2 hours. After the feed was completed, the reaction was maintained for 2 hours, the heating was stopped, and the mixture was cooled to room temperature in ice water to obtain a dimer acid product. As determined by GPC, the dimer acid content was 76.87%, and the trimer acid content was 6.15%.
Embodiment 3
[0033]Adopt the same oleic acid, dispersant and polymerization inhibitor as embodiment 1.
[0034] Take 50g of dispersant and 1g of polymerization inhibitor, put them in a 250mL four-necked flask, stir while purging with nitrogen, the stirring rate is 200rpm, purging with nitrogen for 25min, raising the temperature to 250℃, according to the dilution rate of 0.7h -1 Feed 100 g of linoleic acid for 2.86 hours. After the feed is completed, keep the reaction for 1 hour, stop heating, and cool to room temperature in ice water to obtain a dimer acid product. As determined by GPC, the dimer acid content was 75.01%, and the trimer acid content was 7.35%.
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