Low-foam and easily bleachable laundry detergent composition and preparation method thereof

Abstract

The invention discloses a low-foam and easily bleachable laundry detergent composition and a preparation method thereof. The laundry detergent composition is prepared by 0.1-20% of an unsaturated fatty acid, 0.1-50% of a saturated fatty acid, 0.1-5% of an alkali neutralizer, 1.0-25.0% of a nonionic surfactant, 1.0-25% of an anionic surfactant and 0.5-20% of other auxiliary agents and water. Due to the complex of the saturated fatty acid and the unsaturated fatty acid in the formula of the laundry detergent composition, the prepared laundry detergent composition reduces the washing foam content of the laundry detergent and solves the difficult bleaching problems of the laundry detergent in hand washing. The employed unsaturated fatty acid solves the difficult problem of poor low-temperature stability of a laundry detergent with high fatty acid content. The laundry detergent composition has the advantages of good detergency power, easily bleachable property, good stability, etc.

Description

technical field [0001] The invention relates to a laundry detergent composition, which belongs to the technical field of daily chemical cleaning products, in particular to a low-foaming and easy-to-bleach laundry detergent composition with good stability and a preparation method thereof. Background technique [0002] In my country, with the improvement of people's living standards, consumers are increasingly favoring the use of laundry detergent with good solubility. Compared with washing powder, laundry detergent has the characteristics of mildness, easy dissolution, and low energy consumption. The laundry detergent market has maintained rapid growth in recent years. With the popularization of laundry detergent, its shortcomings are gradually discovered by consumers, among which the poor easy-to-bleach property of hand washing is a shortcoming that consumers generally reflect. [0003] The general solution in the industry to the difficulty of rinsing liquid detergents is ...

AI Technical Summary

Problems solved by technology

Silicone defoaming agent can quickly defoam, but it cannot improve the easy-bleaching of laundry detergent. The laundry detergent with silicone formula will still foam after repeated rinsing, and the stability of silicone in laundry detergent is also recognized in the industry. problem

[0004] Saturated fatty acid salt can greatly reduce the foam of laundry detergent, and can also improve the easy-bleaching property to a certain extent, but the satisfactory bleaching effect cannot be obtained when the fatty acid salt is added in a mass percentage of less than 3%.

The Krafft points of saturated fatty acids are relatively high, and as the carbon chain increases, the Krafft points increase linearly, for example, the Krafft point of C12 fatty acid sodium is 38°C, and the Krafft point of C14 fatty acid sodium is 58°C , C18 fatty acid sodium Clough point is 79°C, under normal circumstances, if the mass percentage of saturated fatty acid salts in laundry detergent is greater than 3%, its low temperature stability is poor, and fatty acid salts will precipitate out at 0°C Phenomenon

[0005] Unsaturated fatty acid salts, especially potassium salts, have a low Clough point and good low-temperature stability in laundry detergent, but unsaturated fatty acid salts alone have poor bleachability and cannot solve the problem of laundry detergent bleachability

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