Unlock instant, AI-driven research and patent intelligence for your innovation.

Organosilicon gemini surfactant containing amido bonds and preparation method thereof

A Gemini surface, organosilicon technology, which is applied in the fields of organic chemistry, chemical instruments and methods, compounds of elements of Group 4/14 of the periodic table, etc., can solve the problems of high process conditions, unobtainable raw materials, and cumbersome post-processing, etc. Achieve the effect of easy availability and stability of raw materials, easy separation and purification, and simple product post-processing.

Inactive Publication Date: 2015-01-07
QIQIHAR UNIVERSITY
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the problems that the existing methods for preparing silicone gemini surfactants containing amide linkage groups have the problems of unavailable raw materials, instability, high requirements on process conditions and cumbersome post-treatment, and provides an organic silicon gemini surfactant containing amide linkages. Silicon gemini surfactant and preparation method thereof

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Organosilicon gemini surfactant containing amido bonds and preparation method thereof
  • Organosilicon gemini surfactant containing amido bonds and preparation method thereof
  • Organosilicon gemini surfactant containing amido bonds and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0018] Specific implementation mode 1: The structural formula of an amide bond-containing silicone gemini surfactant in this implementation mode is: Wherein said n is 1, 3 or 5.

[0019] The amide bond-containing silicone gemini surfactant prepared in this embodiment has good water solubility and good biodegradability because the linking group is a chain-broken strong polar amide bond, which is beneficial to environmental protection and has siloxane The introduction of the product increases the flexibility of the product, so this type of compound can be used as an environmentally friendly dispersant, demulsifier, emulsifier, foaming agent, fabric finishing softener, etc.

specific Embodiment approach 2

[0020] Specific embodiment two: the preparation method of a kind of amide bond-containing organosilicon gemini surfactant of this embodiment, carries out according to the following steps:

[0021] 1. Preparation of γ-aminopropyltrisiloxane: Put γ-aminopropyldiethoxymethylsilane, hexamethyldisiloxane and tetramethylammonium hydroxide into a reaction vessel to obtain a mixture , under the protection of nitrogen, the mixture was stirred and heated to reflux, refluxed for 1.5h to 3.5h, then heated to 120°C to 140°C, and reacted for 0.2h to 1h to obtain a residue, which was treated with twice distilled water Wash until the pH value of the aqueous phase of the washing liquid is 8 to 9, then add anhydrous magnesium sulfate to the washing liquid, filter to obtain the filtrate, and then place the filtrate at a vacuum degree of 0.09Mpa to 0.1Mpa and a temperature of 50 ℃~60℃ in a vacuum drying oven for 1h~2h to obtain a light yellow transparent liquid which is γ-aminopropyltrisiloxane; ...

specific Embodiment approach 3

[0029] Embodiment 3: The difference between this embodiment and Embodiment 2 is that the diacid chloride in the diacid chloride / toluene mixture described in step 2 is malonyl chloride, glutaryl chloride or 1,7-pimeloyl chloride. Others are the same as in the second embodiment.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an organosilicon gemini surfactant containing amido bonds and a preparation method thereof, relating to gemini surfactants and preparation methods thereof. The preparation method is used for solving the problems in the existing methods for preparing the organosilicon gemini surfactant containing amido bond linking groups that raw materials are difficultly obtained and are unstable, the requirements for process conditions are high, and the after-treatment is tedious. The organosilicon gemini surfactant containing the amido bonds, disclosed by the invention, has a structural formula shown in a drawing. The method comprises the steps of firstly preparing gamma-aminopropyl trisiloxane, then enabling the prepared gamma-aminopropyl trisiloxane, triethylamine and toluene to be subjected to ice-bath stirring reaction, dropwise adding a dioyl chloride / toluene mixture, continuing ice-bath stirring, stirring at room temperature, filtrating to obtain a filtrate and filtrated residues, washing the obtained filtrated residues by using toluene so as to obtain a washing solution, then combining the filtrate and the washing solution, removing the toluene solvent through depressurized rotary evaporation, and then, carrying out vacuum drying, thereby obtaining the organosilicon gemini surfactant containing the amido bonds. The preparation method can be applied to the preparation of the organosilicon gemini surfactant containing the amido bonds.

Description

technical field [0001] The invention relates to a gemini surfactant and a preparation method thereof. Background technique [0002] Silicone surfactant is a kind of surfactant composed of polydimethylsiloxane as the hydrophobic main chain, and one or more polar groups are connected at the middle or end. It has become one of the research hotspots in the field of surfactants because of its excellent performance in reducing surface tension, good wetting and spreading properties, basically physiologically inert toxicity, great emulsification, and good compatibility. Silicone gemini surfactant is an excellent special surfactant, which is formed by linking the hydrophilic head group of two ordinary surfactant molecules or near the head group by chemical bonds. Compared with ordinary surfactants, this type of surfactant has excellent surface properties, has a unique aggregate shape, and has good compatibility with ordinary surfactants. However, different linking groups are used i...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B01F17/54B01F17/22C07F7/10C09K23/54C09K23/22
Inventor 邢凤兰高跃岳王丽艳徐群李旭王平朗
Owner QIQIHAR UNIVERSITY