Heavy Duty Liquid Laundry Detergent

SOURCE FMC Corp, Detergent Applications Bulletin No. 4 Suggested Formulations 

Inqredi ents Water, D.I. Stepanate SXS Ethanol 3A Urea PVP-K30 Tinopal CBS-X Bio-Soft LD-190 Sodium citrate 

Blend ingredients in the order given above. Properti es  

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Heavy Duty Liquid Laundry Detergent Type DN... 

Citric acid is used in soft drinks, candies, wines, desserts, jellies, jams, as an antioxidant in frozen fruits and vegetables, and as an emulsifier in cheese. As the most versatile food acidulant, citric acid accounts for about 70 percent of the total food acidulant market. It provides effervescence by combining the citric acid with a biocarbonate/carbonate source to form carbon dioxide. Citric acid and its salts are also used in blood anticoagulants to chelate calcium, block blood clotting, and buffer the blood. Citric acid is contained in various cosmetic products such as hair shampoos, rinses, lotions, creams, and toothpastes. More recently, citric acid has been used for metal cleaning, substituted for phosphate in detergents, for secondary oil recovery, and as a buffer/absorber in stack gas desulfurization. The use of sodium citrate in heavy-duty liquid laundry detergent formulations has resulted in a rapid increase in the use of citric acid. 

Again, the optimum nonionic of choice for this application will depend upon the type of soil to be removed in the laundry process. For example, Figure 3 shows the optimum nonionic for removing typical sebum soil (body oil) in a nonbuilt heavy duty liquid. This figure shows that the optimum lies in the circle between and C., alcohol at an ethylene oxide level of 60 to oO percent. The peak of this optimum would be in the vicinity of a alcohol with 70 percent EO. This is considerably higher in EO content than the ethylene oxide optimum found for powdered laundry detergents. 

Although the incorporation of enzymes and fabric softeners strengthened the market position of heavy-duty liquids, it did not solve the basic problem of limited general detergency performance in normal washing. As noted earlier, heavy-duty liquids came close to the performance of the first nonphosphate laundry powders. With time, however, the performance of nonphosphate laundry powders improved... 

Heavy-duty liquid detergents (HDLDs) were introduced into the laundry market many years after the introduction of powder detergents. The first commercial heavy-duty liquid appeared in the U.S. in 1956. Liquid detergents were introduced in the Asia/Pacific region and Europe as recently as the 1970s and 1980s, respectively. A number of commercial heavy-duty liquids from the U.S., Europe, and Asia/Pacific are depicted in Figure 8.1. 

Liquid Heavy Duty Laundry Detergent Concentrate... 

Versatile heavy duty cleaner concentrate specially developed for the formulation of economy laundry detergents, liquid dish-washes, and household/industrial cleaner products. 

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