Non-gel and non-precipitation high-concentration laundry detergent and preparation method thereof

Abstract

The invention discloses a non-gel and non-precipitation high-concentration laundry detergent and a preparation method thereof. The non-gel and non-precipitation high-concentration laundry detergent isprepared from the following raw materials: an anionic surfactant, a nonionic surfactant and 2-methyl-2, 4-pentanediol, the anionic surfactant comprises fatty alcohol-polyoxyethylene ether sodium sulfate; the nonionic surfactant is prepared from fatty alcohol-polyoxyethylene ether, fatty acid methyl ester ethoxylate and isomeric fatty alcohol-polyoxyethylene ether. According to the non-gel and non-precipitation high-concentration laundry detergent and the preparation method thereof, the prepared high-concentration laundry detergent has the characteristics of good economy, excellent rinse property, no gel in ingredients, rapid dissolution, no precipitation after long-term placement, no layering and good low-temperature rheological property.

Description

technical field [0001] The invention relates to the technical field of daily chemicals, in particular to a highly concentrated laundry liquid without gelation and precipitation and a preparation method thereof. Background technique [0002] Ordinary laundry detergent refers to a liquid laundry detergent with an active substance content higher than 15.0% but lower than 25.0%, and a concentrated laundry detergent with an effective substance content higher than 25.0%. Concentrated laundry detergent has the advantages of strong detergency, saving packaging, storage, and low transportation costs due to its high content of effective substances and less water or fillers. In today's increasingly prominent problems of resources, environment, and energy, it is necessary to develop concentrated laundry detergent. Products are conducive to energy conservation and emission reduction, construction resource conservation, and the promotion of sustainable economic and social significance. ...

AI Technical Summary

Problems solved by technology

Concentrated laundry detergent must be cautious in the selection of raw materials because the concentration of effective substances is as high as 45%. Most anionic surfactants have high water content and are not suitable for formulations. Sodium fatty alcohol polyoxyethylene ether sulfate (AES ) generally has a concentration of 70%, and is widely used in liquid detergents, but when the dosage is high, the dissolution will be too slow, which will affect the production efficiency;

[0004] For nonionic surfactants, the most cost-effective and widely used nonionic surfactant is fatty alcohol polyoxyethylene ether (AEO-9). AEO-9 has good emulsifying and detergency properties, but its There will be serious gelation during the dissolution process, making the whole system unable to continue compounding due to too high viscosity and poor fluidity, which is a major technical problem for concentrated laundry detergent;

[0005] In addition, concentrated laundry detergent products are prone to system collapse due to the evaporation of surface water and the precipitation of content during production, storage and use due to their high content of effective substances and low process water content. The viscosity of the laundry detergent is easily affected by temperature, and fluctuates greatly due to the influence of temperature. Generally, the viscosity of laundry detergent is below 1000mPa s at room temperature, but it may be as high as 6000 or even 10000mPa s at low temperature, and the performance at low temperature is poor. If the above-mentioned technical problems are not solved well, it will become the main restrictive factor for the further development of concentrated laundry detergent

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