Industrial low-foam phosphorus-free brightening washing powder

Abstract

The invention relates to washing powder and particularly relates to industrial low-foam phosphorus-free brightening washing powder. The washing powder contains the ingredients in percentage by weight: 4-10% of fatty alcohol-polyoxyethylene ether 9, 4-8% of soap powder, 3-6% of sodium alkyl benzene sulfonate, 15-30% of composite sodium disilicate, 3-6% of Sokalan CP5, 15-25% of sodium metasilicate pentahydrate, 10-20% of sodium carbonate, 1-3% of sodium carboxymethyl cellulose, 0.2-0.6% of brightening agent and 25-35% of anhydrous sodium sulfate. Composite sodium disilicate and Sokalan CP5 serve as phosphorus substituting auxiliaries, so that the disadvantage that sodium tripolyphosphate in the phosphorus-containing washing powder is adverse to the environment is overcome, and meanwhile, the defect that 4A zeolite is insoluble to water is overcome. The industrial low-foam phosphorus-free brightening washing powder has the beneficial effects that the water solubility is good, the foam is low, the rinsing is easy, the detergency is strong, the washing whiteness is high, the cost is low, the hard water resistance and scale resistance are strong, and linen is not subjected to hardening, graying or yellowing after long-time washing.

Description

technical field [0001] The invention relates to a washing powder, in particular to an industrial low-foaming phosphorus-free whitening washing powder, which belongs to the field of chemical industry. Background technique [0002] Industrial washing refers to the washing of sheets, quilt covers, tablecloths, tablecloths, towels and work clothes provided by hotels, hotels, hospitals, etc. with a large amount of washing. Among them, white fabrics are mainly washed in special laundry factories. Work. [0003] In order to achieve the whitening effect of the washed fabric, whitening ingredients need to be added during the washing process. At present, the whitening detergent used in hotels, hotels, hospitals and laundry factories in industrial washing is mainly phosphorus-containing detergent, and there are also a small amount of non-phosphorus whitening detergent in some areas. Because industrial washing uses a large amount of washing powder, it is more sensitive to the cost...

AI Technical Summary

Problems solved by technology

[0004] 1. Sodium tripolyphosphate (STPP) is mainly used in phosphorus-containing laundry detergent. Sodium tripolyphosphate (STPP) has excellent washing effect, but it will lead to eutrophication of waters and is not good for the environment.

[0005] 2. The phosphorus-free washing powder used in industry is mainly 4A zeolite, sodium citrate, EDTA, NTA, sodium polyacrylate, etc. The amount added to washing powder is limited, and 4A zeolite is favored by the industry due to its low price, but it is insoluble in water, and it tends to remain on the fabric after washing, making the fabric hard, gray and yellow.

[0006] 3. The status quo of industrial washing is as follows: the fabrics to be washed are mainly bed sheets, quilt covers, tablecloths, tablecloths, towels and work clothes provided by hotels, hotels, hospitals, etc., among which white fabrics are the main ones; the water used in industrial washing is mainly tap water , river water or well water, the water quality of the above-mentioned water is greatly affected by geographical location and seasonal factors, mainly hard water, which has a great impact on ground washing, and hard water is not conducive to washing; in addition, some businesses in order to save costs in the washing process The phenomenon of cutting corners and materials in the middle is prominent, and the washed linen is hard, gray and yellow.

[0007] 4. The detergent used in the existing industrial washing does not control the washing foam very well. Too much foam will make it difficult to rinse, so that the washed dirt will be re-entrained in the laundry and form dust. During the process, a large amount of clean water is required, which is not conducive to saving water and reducing costs

[0008] 5. In order to save costs in industrial washing, merchants save water, save detergent and improper washing process during the washing process, which causes the existing industrial washing to become hard, gray and yellow.

[0009] Therefore, in the existing industrial washing, under low-cost washing conditions, there is no low-foaming detergent with no phosphorus in the formula and a whitening effect