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Disproportionated rosinyl anion/non-ion composite surfactant and preparation method thereof

A composite surfactant and non-ionic surface technology, applied in the direction of chemical instruments and methods, chemical/physical processes, dissolution, etc., to achieve the effect of low product toxicity

Inactive Publication Date: 2013-02-13
INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, the commonly used emulsifiers can no longer meet the performance requirements. It is necessary to prepare low-toxic, safe, efficient, environmentally friendly and functional emulsifiers to meet the needs of different functions in pesticides. Functional emulsifiers with stronger capabilities and better safety have become the main trend

Method used

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  • Disproportionated rosinyl anion/non-ion composite surfactant and preparation method thereof

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Experimental program
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Embodiment 1

[0019] A disproportionated rosin anion / nonionic composite surfactant, wherein the molecular weight of polyethylene glycol is any one of 200, 400, 600, 1000, 2000, 4000, and the sulfonate is any one of sodium salt or calcium salt .

[0020]

Embodiment 2

[0022] Weigh disproportionated rosin and polyethylene glycol 400 with a molar ratio of 2:1 and pour them into a 500mL four-neck flask, then add 0.2% zinc oxide as a catalyst, heat to 270°C to make it fully react, and wait for the acid value to drop. To about 10, the reaction is basically complete, cooled to 40 ℃. Add the sulfonating agent concentrated sulfuric acid dropwise in the water bath (the molar ratio of rosin to sulfonating agent is 1: 1.2) and react at 40-60°C for 4-6 hours, add enough sodium hydroxide solution to neutralize to PH=7, Raise the temperature to 80°C, stir and react for 1-2 hours, and evaporate the water generated by the reaction to obtain the product.

[0023]

Embodiment 3

[0025] Weigh disproportionated rosin and polyethylene glycol 600 with a molar ratio of 2:1 and pour them into a 500mL four-neck flask, then add 0.1% zinc oxide as a catalyst, heat to 280°C to make it fully react, and wait for the acid value to drop. To about 10, the reaction is basically complete, cooled to 40 ℃. Add the sulfonating agent concentrated sulfuric acid dropwise in the water bath (the molar ratio of rosin to sulfonating agent is 1: 1.3) and react at 40-60°C for 4-6 hours, add enough calcium hydroxide solution to neutralize to PH=7, Raise the temperature to 80°C, stir and react for 1-2 hours, and evaporate the water generated by the reaction to obtain the product.

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Abstract

The invention discloses a disproportionated rosinyl anion / non-ion composite surfactant and a preparation method thereof. According to the invention, the non-ion is rosin polyethyleneglycol diester and the anion is dehydrogenated rosin polyethyleneglycol diester sulfonate. The invention also discloses the preparation method of the composite surfactant. According to the preparation method, a one-pot method is adopted, about 50% of dehydroabietic acid is contained in dehydrogenated rosin and the benzene ring of dehydroabietic acid can be subjected to sulfonation reaction. The preparation method comprises the steps of esterifying the dehydrogenated rosin and polyethylene glycol to form sulfonation reaction; and sulfonating the benzene ring in the diester by using a sulfonating agent, and salifying, so as to obtain the disproportionated rosinyl anion / non-ion composite surfactant by utilizing the one-pot method. The critical micelle concentration of the prepared surfactant is 0.08-0.1mmol / L and the range of the surface tension is 38.9-42.1mN / m. The surfactant containing anion and non-ion in the product is a novel functional composite green surfactant.

Description

technical field [0001] The invention relates to a composite green surfactant and a preparation method thereof, in particular to a disproportionated rosin-based anion / nonionic composite surfactant and a preparation method thereof. Anionic / nonionic composite surfactants are widely used in pesticides and emulsions. After compounding, they often have a synergistic effect, which is much better than increasing the amount of any of them, which can reduce the amount of surfactants and reduce costs. , improve the use efficiency. [0002] Background technique [0003] The vast majority of emulsifier products in my country use petrochemical resources as raw materials, which have the disadvantages of high dependence on petroleum and poor environmental friendliness. At present, most of the monomers of emulsifiers are some old varieties. For example, calcium alkylbenzenesulfonate, an anionic representative variety, has a production history of more than 40 years in my country, and the 60...

Claims

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Application Information

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IPC IPC(8): B01F17/52B01F17/12B01F17/44C09K23/52C09K23/12C09K23/44
Inventor 饶小平郑建强宋湛谦商士斌宋杰
Owner INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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