Neutral washing powder and preparation method thereof

Abstract

The invention provides a neutral washing powder with a new compound formula. The washing powder contains neutralizing agents and powder spraying and forming auxiliaries, namely organic acids and does not contain such alkaline materials as sodium silicate and sodium carbonate. The washing powder can effectively protect fabric fibers, care clothes, is truly inirritative in hand washing, has good dissolubility, is quickly dissolved under low temperature and adopts the spray drying production process. The specific feeding sequence is adopted during slurry mixing, so that the washing powder particles with moderate strength and good flowability can be produced with the formulas under the conditions of high active agent system and absence of powder spraying skeleton sodium silicate materials. The washing powder has strong detergency under neutral condition and achieves the effect of washing and caring unification.

Description

technical field [0001] The invention belongs to the technical field of daily chemical industry, and in particular relates to a neutral washing powder and a preparation method thereof. Background technique [0002] At present, various brands of ordinary washing powder and concentrated washing powder on the market are all alkaline systems, that is, the washing powder solution is alkaline, with a pH value of 10.3~11. Alkali itself has the functions of wetting, dissolving, emulsifying, dispersing and removing stains, especially greasy dirt. Alkali and other active ingredients in the detergent formula also have a synergistic decontamination effect. Ordinary alkaline washing powder adopts the spray drying process, and the alkaline raw material sodium silicate in its formula plays a key role in the spray forming of the slurry. The washing powder particles with low sodium silicate content or no sodium silicate in the formula can hardly be formed. It cannot form spherical hollow par...

AI Technical Summary

Problems solved by technology

In addition, since the alkaline system detergent contains sodium silicate, the alkaline raw material, the solubility of the detergent is reduced, especially in areas with high hardness water quality, the detergent is difficult to dissolve, and it is even more difficult to dissolve at low temperatures.

[0003] Due to the inherent shortcomings of ordinary alkaline washing powder, it can hurt hands and clothes, and is not suitable for washing underwear, infant clothes, especially high-grade silk and wool fabrics. Therefore, the development is neutral and does not hurt hands or clothes. At the same time, it is suitable for the spray drying production process. The detergent powder has good shape, good solubility, and strong detergency. The detergent powder suitable for washing high-grade cotton fabrics, silk wool clothes, underwear, etc. has become an urgent problem to be solved.

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