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A kind of preparation method of triblock nonionic polyurethane fluorine-containing short-chain surfactant

A surfactant, non-ionic technology, applied in the field of preparation of surfactants, can solve the problem that triblock non-ionic fluorine-containing short-chain surfactants have not been reported, achieve excellent self-assembly performance, can be designed Strong, easy-to-get effects

Active Publication Date: 2020-11-03
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the current research on fluorine-containing short-chain surfactants, most reports focus on the synthesis of di-block fluorine-containing short-chain surfactants, while the synthesis of tri-block nonionic fluorine-containing short-chain surfactants has not yet been seen. to report

Method used

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  • A kind of preparation method of triblock nonionic polyurethane fluorine-containing short-chain surfactant

Examples

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Embodiment 1

[0027] Example 1: Under the conditions of 120°C and a vacuum of 0.09MPa, polyethylene glycol was subjected to vacuum distillation for 6 hours to remove water; the activated 3A molecular sieve was added to hexafluoroisopropanol, sealed and placed overnight, Remove moisture; dry the three-necked bottle, agitator, and feeding tube at 100°C for 2 hours, take it out and place it in a desiccator to cool; Polyethylene glycol and 4.44g of isophorone diisocyanate, add 10μL organic bismuth catalyst, stir in a constant temperature water bath at 80°C, and react for 5 hours; cool down to 55°C, then add 3.36g of hexafluoroisopropanol, continue in the water bath Stir in medium and react for 10 hours to obtain triblock nonionic polyurethane fluorine-containing short-chain surfactant.

Embodiment 2

[0028] Example 2: Distill polyethylene glycol under reduced pressure for 6 hours at 120°C and a vacuum of 0.09 MPa to remove water; add activated 3A molecular sieves to 2,2,3,3,3-5 In fluoro-1-propanol, place it in a sealed place overnight to remove moisture; dry the three-necked bottle, agitator, and feeding tube at 100°C for 2 hours, take it out and place it in a desiccator to cool; Add 10.0 g of polyethylene glycol with a number average molecular weight of 1000 and 4.44 g of isophorone diisocyanate into the bottle, add 10 μL of organic bismuth catalyst, stir in a constant temperature water bath at 80°C, and react for 5 hours; cool down to 75°C, and then add 3.0 g of 2,2,3,3,3-pentafluoro-1-propanol was continuously stirred in a water bath and reacted for 8 hours to obtain a triblock nonionic polyurethane fluorinated short-chain surfactant.

Embodiment 3

[0029] Example 3: Distill polyethylene glycol under reduced pressure for 6 hours at 120°C and a vacuum of 0.09 MPa to remove water; add activated 3A molecular sieves to 1H, 1H, 2H, 2H-perfluorohexyl -1-alcohol, sealed overnight to remove moisture; dry the three-necked bottle, agitator, and feeding tube at 100°C for 2 hours, take it out and place it in a desiccator to cool; put it in a three-necked bottle with agitator and thermometer Add 10.0 g of polyethylene glycol with a number average molecular weight of 1000 and 4.44 g of isophorone diisocyanate, add 10 μL of organic bismuth catalyst, stir in a constant temperature water bath at 100°C, and react for 5 hours; cool down to 80°C, and then add 5.28g 1H, 1H, 2H, 2H-perfluorohexan-1-ol, continue to stir in a water bath, and react for 8 hours to obtain a three-block nonionic polyurethane fluorinated short-chain surfactant.

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Abstract

The invention discloses a three-block nonionic polyurethane fluorine-containing short-chain surfactant and a preparation method thereof. The three-block nonionic fluorine-containing short-chain surfactant is obtained by reacting polyethylene glycol and diisocyanate in a certain proportion under the catalysis of organic bismuth to obtain a prepolymer with isocyanate groups at both ends, and then combining the prepolymer with the short-chain Fluoroalcohol coupling reaction to get. The present invention is characterized in that the tri-block nonionic fluorine-containing short-chain surfactant exhibits excellent self-assembly performance and high surface activity in aqueous solution, and at the same time, the preparation method is simple, and the starting material is a universal reagent that is easy to obtain, and the synthesis process does not require Organic solvent, and the shorter fluorocarbon chain and polyurethane structure make it have good biocompatibility and biodegradability, it can be used in drug delivery, biofilm simulation, etc., and has broad application prospects.

Description

technical field [0001] The invention relates to a preparation method of a surfactant, in particular to a preparation method of a three-block nonionic polyurethane fluorine-containing short-chain surfactant. Background technique [0002] Fluorosurfactants have high surface activity, high chemical and thermal stability, and fluorocarbon chains have extreme hydrophobicity and high oil repellency, making them have excellent surface properties. Thermal stability and chemical inertness under extreme conditions enable performance under the harshest conditions. However, traditional surfactants with long fluorocarbon chains such as perfluorooctanesulfonic acid / perfluorooctanoic acid (PFOA / PFOS) have problems such as environmental pollution and bioaccumulation, which have aroused people's concern about the environment and safety of traditional fluorosurfactants. issue of concern. In order to solve the environmental and safety problems caused by traditional long fluorocarbon chain fl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01F17/52C08G18/28C08G18/48C08G18/75C08G18/66C09K23/52
CPCC08G18/2885C08G18/4833C08G18/6666C08G18/755C09K23/16
Inventor 金勇沈益超金泓宇张晓玲
Owner SICHUAN UNIV
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