Method for synthesizing octadecyl bi-polyoxyethylene benzyl ammonium chloride

A technology of octadecyldipolyoxyethylene benzyl ammonium chloride and its synthesis method, which is applied to the preparation of aminohydroxyl compounds, chemical instruments and methods, and the preparation of organic compounds to improve penetration and rubbing fastness , the effect of reducing the amount of acid

Inactive Publication Date: 2011-06-29
ZHEJIANG HUANGMA TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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  • Method for synthesizing octadecyl bi-polyoxyethylene benzyl ammonium chloride
  • Method for synthesizing octadecyl bi-polyoxyethylene benzyl ammonium chloride

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Embodiment 1

[0022] Add 269g (1mol) octadecyl primary amine into the reactor, heat to 90°C, feed 79.2g (1.8mol) ethylene oxide, react until the pressure decrease rate is not greater than 0.005MPa per 10 minutes, add 0.035g Potassium hydroxide, continue to pass through 360.8g (8.2mol) ethylene oxide, control reaction temperature 100~105 ℃, pressure 0.3~0.4MPa. After the reaction, cool down, add methanol, stir and heat up to 65°C, start to add 126.5g (1mol) benzyl chloride dropwise, and control the temperature at 60-70°C during the dropwise addition. After the addition was complete, stirring was continued for 0.5h. Then gradually raise the temperature to 80-85° C., and keep warm for 4 hours to obtain octadecyldipolyoxyethylene (10) benzyl ammonium chloride with an HLB value of about 13.

[0023] The chemical equation of the above reaction is:

[0024]

[0025]

Embodiment 2

[0027] Add 269g (1mol) of octadecyl primary amine to the reactor, heat to 100°C, feed 88g (2mol) of ethylene oxide, react until the pressure drop rate is not greater than 0.005MPa per 10 minutes, add 7.9g of hydroxide Sodium, continue to pass through 1232g (28mol) ethylene oxide, control reaction temperature 145~150 ℃, pressure 0.1~0.2MPa. After the reaction, cool down, add isopropanol and distilled water, stir and heat up to 75°C, start to add 75.9g (0.6mol) benzyl chloride dropwise, and control the temperature at 70-80°C during the dropwise addition. After the dropwise addition, stirring was continued for 0.5h. Then gradually raise the temperature to 90-95°C, and keep it warm for 7 hours to obtain octadecyldipolyoxyethylene (30) benzyl ammonium chloride with an HLB value of about 17.

Embodiment 3

[0029] Add 269g (1mol) octadecyl primary amine to the reaction kettle, heat to 95°C, feed 96.8g (2.2mol) ethylene oxide, react until the pressure decrease rate is not greater than 0.005MPa per 10 minutes, add 29.1g For sodium methoxide, continue to feed 2543.2g (57.8mol) of ethylene oxide, and control the temperature at 120-125°C and the pressure at 0.2-0.3MPa. After the reaction, cool down, add distilled water, stir and heat up to 90°C, start to add 139.1g (1.1mol) benzyl chloride dropwise, and control the temperature at 90-95°C during the dropwise addition. After the addition was complete, stirring was continued for 0.5h. Then gradually raise the temperature to 95-100° C., and keep warm for 12 hours to obtain octadecyldipolyoxyethylene (60) benzyl ammonium chloride with an HLB value of about 18.5.

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Abstract

The invention discloses a method for synthesizing octadecyl bi-polyoxyethylene benzyl ammonium chloride. Octadecylamine, ethylene oxide and benzyl chloride are taken as raw materials; and the method is characterized by comprising the following steps of: A) polymerizing the octadecylamine and the ethylene oxide to obtain polyoxyethylene octadecylamine; and B) performing quaterisation reaction on the polyoxyethylene octadecylamine and the benzyl chloride in a molar ratio of 1:(0.5-1.1) at the temperature of between 70 and 100DEG C for 4 to 12 hours in a polar medium under the condition of refluxing to obtain the octadecyl bi-polyoxyethylene benzyl ammonium chloride. The product prepared by the method is suitable for dyeing of various acid dyes, the using amount of acid can be reduced, and the damage to fibers is reduced; and when the using amount is large, the product can be used as a stripping agent. The product has high solubility in water, high solution rate, good solubilization effect and obvious solubilization effect on most acid dyes.

Description

technical field [0001] The invention relates to the cationic modification of polyoxyethylene alkylamine to make it have excellent application performance in some aspects, and belongs to the technical field of synthesis of quaternary ammonium salt cationic surfactants in organic chemistry. Background technique [0002] Polyoxyethylene alkylamine can be used as a leveling agent and fiber protection agent for dyeing, and to some extent has the characteristics of a cationic surfactant. With the increase of the addition number of ethylene oxide, the cationic property gradually weakens. The ionicity gradually increases. Polyoxyethylene alkylamine is cationic under acidic conditions, and can complex with acid dyes to form salts, which can cause dye-friendly leveling effect and can inhibit the dyeing rate from being too fast. In mordant dyeing, polyoxyethylene alkylamine can prevent staining and fiber embrittlement. [0003] In the field of textile printing and dyeing auxiliaries,...

Claims

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Application Information

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IPC IPC(8): C07C217/50C07C213/08C08G65/28C08G65/337D06P1/607
Inventor 王伟松王新荣李福强金一丰郭晓锋
Owner ZHEJIANG HUANGMA TECH
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