Abietate alcohol ether type quaternary ammonium salt surface active agent and preparation method thereof

Abstract

The invention discloses a rosin ester alcohol ether type quaternary ammonium salt surfactant. Its general structural formula is as follows: in the formula, the molecular weight n of polyethylene glycol PEG is any one of 200, 400, 600, 1000, 2000 and 4000. , in the formula, R is any one of methyl CH3, ethyl CH2CH3, and ethanol CH2CH2OH. The invention also discloses a preparation method of the surfactant: it is prepared by a one-pot method. First, rosin and polyethylene glycol are esterified to form rosin polyethylene glycol monoester, and the hydroxyl group in the polyethylene glycol is treated with epichlorohydrin ether. The epoxy group is quaternized with the tertiary amine hydrochloride to obtain a rosin ester alcohol ether quaternary ammonium salt type surfactant. The critical micelle concentration of the prepared surfactant is 0.1-0.3mmol / L; the surface tension range is 37-39.5mN / m. The molecule contains both non-ionic and cationic functional groups, and is a new type of functional green surfactant.

Description

technical field

[0001] The invention relates to a functional green surfactant and a preparation method thereof, in particular to a rosin ester alcohol ether type quaternary ammonium salt surfactant and a preparation method thereof. Alcohol ether type quaternary ammonium salt cationic surfactant introduces ether bond and alcohol hydroxyl group on the basis of the original long-chain alkyl quaternary ammonium salt structure, so that the surfactant not only has softness, antistatic, emulsification, disinfection and sterilization, etc. In addition to performance, it also has the characteristics of high water solubility and high surface activity. Background technique

[0002] Surfactants are composed of non-polar lipophilic hydrocarbon chains and polar hydrophilic groups, and have both lipophilic and hydrophilic amphoteric properties. The unique properties of surfactants make them widely used in various fields such as washing, textiles, medicine, food, and pesticides. At presen...

Examples

Embodiment 1

[0021]

[0022] In the formula, the molecular weight n of polyethylene glycol PEG is any one of 200, 400, 600, 1000, 2000, 4000, and in the formula, R is methyl CH 3 , Ethyl CH 2 CH 3 , Ethanol CH 2 CH 2 Any one of OH.

[0023] Example 2

Embodiment 2

[0025] Weigh rosin and polyethylene glycol 400 with a molar ratio of 1:1 and pour them into a 500mL four-necked flask, and then add an appropriate amount of zinc oxide (the amount of zinc oxide accounts for about 0.1-0.2% of the mass of rosin) as a catalyst, Heat to 230-280°C to make it fully react, and when the acid value drops to about 10, the reaction is basically completed, then cool down.

[0026] Then take 0.1 mol of the above reaction product in a 250 mL dry three-necked flask, add 0.1 mol of epichlorohydrin, 0.12 mol of sodium hydroxide (added in 50% aqueous solution), 0.1% of rosin quality tetrabutylammonium bromide and dichloromethane solvent, warming up to 50°C, stirring for 4h, cooling to room temperature and suction filtration. The solid phase was washed twice with dichloromethane, distilled off dichloromethane and a small amount of unreacted epichlorohydrin (around 85°C) to obtain a rosin-based alcohol ether intermediate.

[0027] Add the intermediate synthesize...

Embodiment 3

[0032] Example 4

technical field

[0001] The invention relates to a functional green surfactant and a preparation method thereof, in particular to a rosin ester alcohol ether type quaternary ammonium salt surfactant and a preparation method thereof. Alcohol ether type quaternary ammonium salt cationic surfactant introduces ether bond and alcohol hydroxyl group on the basis of the original long-chain alkyl quaternary ammonium salt structure, so that the surfactant not only has softness, antistatic, emulsification, disinfection and sterilization, etc. In addition to performance, it also has the characteristics of high water solubility and high surface activity. Background technique

[0002] Surfactants are composed of non-polar lipophilic hydrocarbon chains and polar hydrophilic groups, and have both lipophilic and hydrophilic amphoteric properties. The unique properties of surfactants make them widely used in various fields such as washing, textiles, medicine, food, and pesticides. At presen...

Examples

Embodiment 1

[0021]

[0022] In the formula, the molecular weight n of polyethylene glycol PEG is any one of 200, 400, 600, 1000, 2000, 4000, and in the formula, R is methyl CH 3 , Ethyl CH 2 CH 3 , Ethanol CH 2 CH 2 Any one of OH.

[0023] Example 2

Embodiment 2

[0025] Weigh rosin and polyethylene glycol 400 with a molar ratio of 1:1 and pour them into a 500mL four-necked flask, and then add an appropriate amount of zinc oxide (the amount of zinc oxide accounts for about 0.1-0.2% of the mass of rosin) as a catalyst, Heat to 230-280°C to make it fully react, and when the acid value drops to about 10, the reaction is basically completed, then cool down.

[0026] Then take 0.1 mol of the above reaction product in a 250 mL dry three-necked flask, add 0.1 mol of epichlorohydrin, 0.12 mol of sodium hydroxide (added in 50% aqueous solution), 0.1% of rosin quality tetrabutylammonium bromide and dichloromethane solvent, warming up to 50°C, stirring for 4h, cooling to room temperature and suction filtration. The solid phase was washed twice with dichloromethane, distilled off dichloromethane and a small amount of unreacted epichlorohydrin (around 85°C) to obtain a rosin-based alcohol ether intermediate.

[0027] Add the intermediate synthesize...

Embodiment 3

[0032] Example 4

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