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A kind of preparation method of emulsifier based on polyhydroxy linear polymer

A technology of polyhydroxy straight chain and polymer, which is applied in chemical instruments and methods, chemical/physical processes, transportation and packaging, etc. It can solve the problems of reduced stability, increased emulsion viscosity and particle size, etc., to achieve optimal performance, The effect of cheap price and good wrapping effect

Active Publication Date: 2022-04-26
江苏美科太阳能科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although reactive emulsifiers can avoid or overcome the defects of small molecule emulsifiers entering the bulk phase, they also increase the viscosity and particle size of the emulsion to a certain extent, reducing the stability of the system.

Method used

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  • A kind of preparation method of emulsifier based on polyhydroxy linear polymer
  • A kind of preparation method of emulsifier based on polyhydroxy linear polymer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 1) Synthesis of hydrophilic group-polyhydric linear polymer: Weigh glycidol (19.3g, 0.258mol) and dissolve it in 150mL vinyl ether, equilibrate in ice bath, add slowly while stirring p-toluenesulfonic acid (992mg, 5.214mmol), after ice bath for 10min, return to room temperature and react for 3h, then use saturated NaHCO 3 The solution was washed with water, dried and filtered over anhydrous sodium sulfate, and then spin-dried, and the product (15.26 g, 0.106 mmol) was obtained by a vacuum distillation device with a yield of 41%.

[0025] Take by weighing last step gained product (8g, 55.5mmol) and join in the reaction flask, use N 2 The air in the reaction flask was replaced, then potassium tert-butoxide tetrahydrofuran solution (1.03 mL, 1.03 mmol) was slowly added, and the reaction was stirred at 60° C. for 24 h. The reaction was quenched with methanol, diluted with dichloromethane and washed with brine and water, the organic phase was separated and spin-dried. Add ...

Embodiment 2

[0029] The consumption of glycidyl alcohol among the embodiment 1 is increased to four times of original, other is unchanged, and the productive rate of synthesizing high molecular emulsifier is 45%.

Embodiment 3

[0031] The amount of linoleic acid in Example 1 was increased to four times the original amount, and the others remained unchanged, and the yield of the synthetic polymer emulsifier was 33%.

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Abstract

The invention discloses a preparation method of an emulsifier based on a polyhydroxy straight-chain polymer, belonging to the field of polymer materials. With N,N-dimethylformamide (DMF) as solvent, N,N-dicyclohexylcarboimide (DCC) as dehydrating agent, 4-lutidine (DMAP) as catalyst, one of the raw materials It is a polyhydroxy linear polymer (PG), and the other raw material is a carboxylic acid with different chain lengths. After esterification, an amphiphilic polymer emulsifier is finally obtained. The present invention can change the quantity of synthetic polymer hydroxyl group by changing the amount of reaction monomer, adjust the HLB value of emulsifier, simple and convenient, endow emulsifier with excellent performance; The polymer emulsifier obtained in the present invention has longer alkane The base chain has a good wrapping effect on mineral oil, vegetable oil and benzene oil, and has a good emulsifying effect; the process of the invention is simple to synthesize and environmentally friendly.

Description

technical field [0001] The invention belongs to the technical field of emulsifiers, and in particular relates to a preparation method of a class of polymer emulsifiers. Background technique [0002] An emulsifier is a class of compounds that can make two or more components that are immiscible with each other mix with each other to form a stable emulsion. Its working principle is that during the emulsification process, the dispersed phase is dispersed in the continuous phase in the form of micro-droplets (micron), and the emulsifier reduces the interfacial tension of each component in the mixed system, forming a stronger solid on the surface of the micro-droplets. A thin film that prevents the droplets from coalescing with each other, thus maintaining a relatively homogeneous emulsion. Emulsifier belongs to a kind of surfactant, and its molecule contains hydrophilic group and lipophilic group. In order to measure the hydrophilicity or lipophilicity of emulsifier, the "Hydrop...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G65/332C08G65/22C09K23/44
CPCC08G65/3322C08G65/22C09K23/00
Inventor 胡磊徐金涛赵霜张士鑫
Owner 江苏美科太阳能科技股份有限公司
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