A kind of preparation method of surfactant for detergent

A surfactant and detergent technology, applied in the field of surfactant preparation, can solve the problems of poor washing effect of detergent, large amount of dust generated by dust-free clothing, and damage to clothing fibers, etc., and achieve low decontamination ability and easy foaming Effects of rinsing, large amount of dust generation, and high cleaning performance

Active Publication Date: 2017-10-03
SHENZHEN SELEN SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are also some special detergents for cleaning clothes or polyester fabrics. For example, Chinese patent CN102643722A discloses a detergent and a preparation method thereof, wherein the detergent includes stearyl dimethyl ammonium chloride, fatty alcohol poly Oxyethylene ether, additives and water, the washing effect of the detergent of this formula is not good enough, and it is not easy to rinse after washing; for example, Chinese patent CN101130717 discloses a kind of cleaning agent for polyester and its blended dyes, and the cleaning agent components include castor Sesame oil ethylene oxide condensate, isomeric tridecyl fatty alcohol polyoxyethylene ether, Na2SiO 3 , polycarboxylic acid derivatives, PVP and citrate, using ordinary surfactants and strong alkali additives, on the one hand, it can improve the detergency of grease through hydrolysis, and on the other hand, it can reduce the amount of surfactants So as to reduce the foam, but the use of strong alkali will easily cause damage to the fibers of the clothes during the washing process, resulting in a large amount of dust generated by the dust-free clothes

Method used

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  • A kind of preparation method of surfactant for detergent
  • A kind of preparation method of surfactant for detergent
  • A kind of preparation method of surfactant for detergent

Examples

Experimental program
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Effect test

preparation Embodiment 1

[0044] Take 24.2g (0.1mol) of dodecyl glycidyl ether, 18.6g (0.1mol) of dodecyl alcohol and add them to the reactor at room temperature in turn, then add 0.01g of NaOH catalyst, replace the air with nitrogen, and heat at 70°C Under the reaction 3h. The temperature was raised to 85°C, vacuumed at a constant temperature for 20 minutes, then the temperature was raised to 130°C, 22g (0.5mol) of ethylene oxide was continuously introduced, and the pressure of the reactor was controlled to 0.15MPa. starting pressure. Lower the reaction temperature to 50°C, add 18.5g (0.2mol) of epichlorohydrin dropwise within 30 minutes to carry out the ring-opening reaction, after stirring at constant temperature for 3 hours, remove excess epichlorohydrin by distillation under reduced pressure; raise the temperature to 200°C, add 12.1 g of polyethylene polyamine (diethylenetriamine and triethylenetetramine mixed at a mass ratio of 1:1) were reacted for 4 hours to obtain the detergent surfactant (A-...

preparation Embodiment 2

[0046]Take 32.6g (0.1mol) of octadecyl glycidyl ether, 27g (0.1mol) of stearyl alcohol and add them to the reactor at room temperature, then add 0.01g of NaOH catalyst, replace the air with nitrogen, and heat at 80°C Reaction 2h. Then the temperature rises to 90°C, vacuumizes at constant temperature for 20min, then raises the temperature to 180°C, continuously feeds 30.8g (0.7mol) ethylene oxide, controls the reactor pressure to 0.3MPa, completes feeding of ethylene oxide, and keeps warm to pressure down to the starting pressure. Lower the reaction temperature to 60°C, add 27.75g (0.3mol) of epichlorohydrin dropwise within 30min to carry out the ring-opening reaction, stir at constant temperature for 2h, distill off excess epichlorohydrin under reduced pressure; raise the temperature to 200°C, add 29.3g of polyethylene polyamine (triethylenetetramine and tetraethylenepentamine mixed at a mass ratio of 2:1) were reacted for 6h to obtain the detergent surfactant (A-2) of this e...

preparation Embodiment 3

[0048] Take 27g (0.1mol) tetradecyl glycidyl ether, 48.4g (0.2mol) hexadecyl alcohol and add them to the reactor at room temperature, then add 0.01g NaOH catalyst, replace the air with nitrogen, and heat to 80°C Under reaction 2h. Then the temperature rises to 90°C, vacuumizes at a constant temperature for 20 minutes, raises the temperature to 150°C, continuously feeds 26.4g (0.6mol) of ethylene oxide, and controls the reactor pressure to 0.6MPa. The pressure is reduced to the starting pressure. Lower the reaction temperature to 60°C, add 18.3g (0.2mol) of epichlorohydrin dropwise within 30min to carry out the ring-opening reaction, stir at constant temperature for 2 hours, and distill off excess epichlorohydrin under reduced pressure; raise the temperature to 200°C, add 54g of polyethylene polyamine (diethylenetriamine, triethylenetetramine and tetraethylenepentamine mixed in a mass ratio of 1:1:1) was reacted for 5h to obtain the detergent surfactant (A-3) of this example. ...

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Abstract

The invention discloses a preparation method of a surfactant for detergents and a detergent composition comprising the surfactant. The detergent composition is strong in dirt-removing power, low-foam and easy to rinse. The invention further discloses a special detergent composition for clean clothes; the detergent composition comprises the surfactant, alcohol alkoxylate, fatty alcohol-polyoxyethylene ether, a water-soluble growth substance, an anti-redeposition agent, a chelating agent and water; oil stains, sweat stains and other pollutants can be well removed when the detergent composition is used for washing the clean clothes, fibers cannot be damaged, overhigh dust content of the washed clean clothes cannot be caused, and the cleanness performance requirement is met.

Description

technical field [0001] The present invention relates to a method for preparing a surfactant, and a detergent composition comprising the surfactant. Background technique [0002] In the clean rooms of electronics, pharmaceuticals, food, aerospace and other fields, operators often use dust-free clothes for operations. During the operation, the dust-free clothes are easily contaminated. The main pollutants are oil, dust and sweat stains. The main material of dust-free clothing is generally polyester fabric containing conductive filaments. The material is different from ordinary clothing, and the dust-free clothing used in different grades of clean rooms has different cleaning performance requirements, which requires special cleaning methods for the cleaning of dust-free clothing. Detergents and professional washing programs. [0003] At present, there are also some special detergents for cleaning clothes or polyester fabrics. For example, Chinese patent CN102643722A discloses ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C11D1/44C11D1/835C11D3/37
Inventor 张原管映亭许云丽
Owner SHENZHEN SELEN SCI & TECH CO LTD
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