Application of epoxy cardanol as bio-based hindered phenolic antioxidant

A cardanol and antioxidant technology, which is applied in the field of preparation of bio-based hindered phenol antioxidants, can solve the problems of harsh production conditions, limited promotion and application, expensive catalysts and the like, and achieves easy process control, wide sources and low prices. Effect

Inactive Publication Date: 2016-01-06

INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY

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Problems solved by technology

However, due to harsh production conditions, higher temperature, pressure, expensiv...

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Method used

Antioxidant is added in soybean oil, and consumption accounts for respectively 0.02‰, 0.05‰, 0.07‰, 0.1‰ of soybean oil quality, and antioxidant is added in soybean oil, fully stirs, then places the vacuum of 30 ℃ Placed in a drying oven for 1 hour, the oxidation stability of different samples was tested by high pressure differential scanning calorimetry (PDSC) temperature programming method. The experimental results are shown in Figure 4 and Table 1. It can be seen that after adding 0.07‰ of antioxidant, the initial decomposition temperature of soybean oil ...

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Abstract

The invention discloses application of epoxy cardanol as a bio-based hindered phenolic antioxidant. The epoxy cardanol as the bio-based hindered phenolic antioxidant is prepared by comprising the following steps: with cardanol as a raw material, under the action of a catalyst, dropwise adding a peroxy source and carrying out epoxidation reaction at 40 to 70 DEG C for 2 to 5 hours so as to prepare a crude epoxy cardanol, and carrying out aftertreatment so as to obtain an epoxy cardanol antioxidant. According to the invention, thermal oxidative aging resistance of the bio-based hindered phenolic antioxidant in the invention is superior to the thermal oxidative aging resistance of a general hindered phenolic antioxidant, i.e., 2,6-di-tert-butyl-4-methylphenol. Meanwhile, the bio-based hindered phenolic antioxidant has the advantages of wide raw material sources, low price, simple preparation process, low toxicity and environmental protection, can be extensively applied in vegetable oil and biodiesel, and has good application and development prospects.

Application Domain

Organic chemistryFatty substance preservation using additives +1

Technology Topic

CardanolLow toxicity +7

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Examples

Experimental program(8)

Example Embodiment

[0034] Example 1

[0035] Weigh 5g cardanol, 0.8g formic acid, 0.1g p-toluenesulfonic acid and 5mL toluene, add them to a three-necked flask equipped with condenser, stir bar and thermometer, stir and heat to 50℃, add 5.5g hydrogen peroxide (50%) dropwise , The dropping rate is 10mL/h. After the addition is completed, the reaction system is heated to 65°C for 3h; after the reaction, the crude product is left to stand for layering to obtain the organic phase, and 50°C with a mass fraction of 2% sodium bicarbonate solution And 50 ℃ deionized water or distilled water to wash to neutral, flash evaporate to remove water, recover the solvent, the bio-based hindered phenol type antioxidant product is obtained. The product is a yellow oily liquid with an epoxy value of 3.78%.

Example Embodiment

[0036] Example 2

[0037] Weigh 5g cardanol, 1.0g acetic acid, 0.3g732 cation exchange resin and 5mL n-hexane, add them to a three-necked flask equipped with condenser, stir bar and thermometer, stir and heat to 55℃, add 5.5g hydrogen peroxide (50%) dropwise , The dropping rate is 10mL/h. After the addition is completed, the reaction system is heated to 65°C for 3.5h; after the reaction, the crude product is left to stand for layering to obtain the organic phase, using 50°C with a mass fraction of 2% sodium bicarbonate The solution and 50℃ deionized water or distilled water are washed to neutrality, the water is removed by flash evaporation, and the solvent is recovered to obtain the finished bio-based hindered phenol antioxidant. The product is a yellow oily liquid with an epoxy value of 3.42%.

Example Embodiment

[0038] Example 3

[0039] Weigh 5g cardanol, 0.9g formic acid, 0.2g p-toluenesulfonic acid and 10mL toluene, add them to a three-necked flask equipped with condenser, stir bar and thermometer, stir and heat to 50℃, add 6.5g hydrogen peroxide (30%) dropwise , The dropping rate is 50mL/h. After the addition is completed, the reaction system is heated to 65°C for 3.5h; after the reaction, the crude product is left to stand for layering to obtain the organic phase, and 30°C with a mass fraction of 2% sodium bicarbonate is used The solution and 70 ℃ deionized water or distilled water are washed to neutrality, the water is removed by flash evaporation, the solvent is recovered, and the finished product of bio-based hindered phenol antioxidant is obtained. The product is a yellow oily liquid with an epoxy value of 3.61%.

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Description & Claims & Application Information

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Diffusion bonding method of ternary layered ceramic titanium-silicon-carbon and solid solution thereof and ferritic stainless steel based on Ni foil intermediate layer

ActiveCN112209729ALow connection temperatureGood antioxidant propertiesFinal product manufactureSolid electrolyte fuel cellsCeramicEmery paper

Owner:OCEAN UNIV OF CHINA +2

Classification and recommendation of technical efficacy words

Good antioxidant properties
Extended service life

Application of epoxy cardanol as bio-based hindered phenolic antioxidant

AI-Extracted Technical Summary

Problems solved by technology

Method used

Abstract

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Example Embodiment

Example Embodiment

Example Embodiment

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Description & Claims & Application Information

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