Laundry liquid agent can be divided into two categories: one is alkaline liquid detergent, alkaline detergent as it can be washed cotton, linen, synthetic fabrics; the other is a neutral liquid detergent, it washable wool, silk and other fine fabrics. We should have good liquid detergent detergency, but also in the winter and hot summer could always be transparent, non-hierarchical, non-turbid, no precipitation, and has a certain viscosity.
● weak alkaline pH, the general control of liquid detergent 9 to 10.5, some products are sodium alkylbenzene sulfonamide handle and fatty alcohol polyoxyethylene ether compound formed and made of high inorganic salt additives bubble liquid detergent. Alkaline liquid detergent commonly used in clothing surfactant is alkyl benzene sulfonate, which has effective and strong decontamination hard water-resistant, easily dissolved in water. This surfactant detergency in hard water hardness increased with the weakened, therefore required to join the chelating agent to remove calcium and magnesium ions. Phosphate for use in liquid detergent chelating agent, the multiple use of potassium pyrophosphate, its calcium and magnesium ions as sodium tripolyphosphate chelating ability, but it is larger solubility in water. In addition, general requirements for liquid detergent has a certain viscosity and pH, so also in inorganic and organic tackifier and solubilizer.
● neutral liquid laundry detergent, the pH value of 7 to 8 can be used to wash silk, wool and other fine fabrics. These products are mainly used for surfactant and solubilizer composition. Because without additives, mainly by detergency surfactant, therefore higher levels of surfactant, generally 40% to 50%. Active matter content in general than non-ionic surfactant anionic surfactants. As non-ionic surfactant content is high, easy to cause the propagation of bacteria, causing discoloration smelly products, in order to prevent multiplication of bacteria, may add some amount of sodium and hydroxy benzene, methyl esters as preservatives.
Liquid detergent Cons:
First, the liquid detergent solubility limitations and because the compatibility problem of surfactant, inorganic additives by adding variety and quantity are greatly affected. Therefore, liquid detergent, some good can not add or only trace additives added, which greatly weakened the effect of washing liquid detergent. For example, detergent formulations can be added up to 40-60% of the inorganic additives, and liquid detergent dosage of inorganic additives is generally 3-10%.
Second, the liquid detergent foaming ability, leading to foam, so clothing is not easy rinsing, a lot of wasted water and electricity.
Third, the liquid detergent in general 40-80% of added water, the opposite is not washing component content, which makes a huge consumption of water liquid detergent products and transport costs. In addition, the liquid detergent for general use plastic bottles, barrels distribution, and laundry detergent, like a lot of plastic waste will be generated.