Phosphorus-free washing powder formula and production process

Phosphate-free laundry powder 【Properties】 White or colored powder particles, good fluidity, good foaming and detergency, the aqueous solution is alkaline. 【Reference formula】The important ingredients are similar to individual laundry detergents (10301), but do not contain phosphates to replace phosphorus additives. Commonly used phosphorus substitutes are 4A zeolite silicate, organic phosphorus substitutes, polycarboxylates and composite additives. 4A zeolite is a water-insoluble and alkaline sodium aluminosilicate crystal. When using, it is necessary to increase the amount of the nominal active agent, and also need to cooperate with other auxiliary agents. Silicate has good pH buffering ability and can also suspend and disperse dirt, among which layered sodium silicate has good comprehensive performance. Organophosphorus substitutes include hydroxycarboxylic acids, such as sodium citrate, sodium gluconate, sodium tartrate, etc., which have good chelating properties for metal ions, and are relatively safe to use, but expensive. Polycarboxylates include polymers or copolymers of acrylic acid, maleic acid, and the like. It is mainly used as a dispersant to disperse dirt particles and deposits, and is often used in conjunction with 4A zeolite. Composite additives are composed of carboxylate, silicate and other components. The reference formula of phosphorus-free laundry detergent is shown in Table 1-35. Table 1-35 Reference formula ingredients of phosphorus-free laundry detergent Dosage/part Formula One Formula Two Formula Three Formula Four Formula Five Cl4~i8d Sodium Alkenyl Sulfonate 9.0C14~t6a Sodium Alkenyl Sulfonate 15/0 38.90 Alkylbenzene Sulfonate Sodium acid 5.5 fat alcohol polyoxyethylene ether 10.0 5.0 polyethylene glycol 2.0 15.0 hydrogenated avocado 5.0 sodium silicate 6.0 17.0 2 1. 00 10.0 sodium silicate 7.0 sodium sodium bicarbonate 10.0 10.0 10 17.0 2.0 sodium carbonate 12.0 23.0 9.75 30.0 30.0 cmc — NA 0.6 1.0 2.0 Pigment 0.2 0.05 fluorescent whitening agent 1.5 0.10 Flavored 0.10 water 4.0 3.5 6.50 5.00 water 5.0 Sodium sulfate 37.3 40.0 23.00 36-0 27.0 [Preparation method] Refer to the production process of individual washing powder. Be careful when preparing the slurry: 4A zeolite is insoluble in water and easily suspended on the liquid surface. The feeding sequence should be adjusted to ensure that the slurry is uniform and the slurry concentration should be properly reduced to improve the fluidity of the slurry. 【Product Standard】 GB/T 13171-1997 【Use】Wash all kinds of clothes.

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