Polyoxyethylene laureth-the fastest growing surfactant with the largest dosage.

　The leveling agent O is also called lauryl alcohol polyoxyethylene ether. Polyoxyethylene laureth is an important fatty alcohol polyoxyethylene ether, and it is one of the fastest growing and most widely used nonionic surfactants. The ether bond in the molecule is not easy to be destroyed by acid and alkali, so it has high stability, good water solubility, electrolyte resistance, easy biodegradation, and small foam. In addition to being widely used in the textile printing and dyeing industry, it is also widely used to formulate low-foaming liquid detergents. Polyoxyethylene laureth has good compatibility with other surfactants.

　　 is not sensitive to hard water and has good washing performance at low temperature, but the solubility will gradually decrease with the increase of water temperature. In the pH range of 3-11, polyoxyethylene laureth is hydrolyzed stably. But they will also slowly oxidize in the air, producing some oxidation products, such as acetaldehyde and hydroperoxide, which are more toxic to the skin than those surfactants that have not experienced similar conditions. Mainly used in washing industry, textile printing and dyeing industry and paper industry. The chemical risk substances of polyoxyethylene laureth that can be contained in samples of products, ecological environment, etc., will have a serious impact on the growth and reproductive capacity of human cancer cells, and cause serious harm to human health and the ecological environment.

　　 Application

　　 An IAEO-acrylic acid-SMAS terpolymer surfactant and its preparation method and application. First, itaconic acid, p-toluenesulfonic acid, hydroquinone and polyoxyethylene laureth are added to the reactor, and the reaction is carried out at 90-140 until the measured acid value is constant to obtain itaconic polyoxyethylene laureth ether. Acid monoester; secondly, add water to the constant temperature reactor, and then mix the ammonium persulfate solution and the monomer composed of acrylic acid, sodium methallyl sulfonate, and itaconic acid monoester of lauryl polyoxyethylene ether The mixture was added dropwise to a 65-105 constant temperature reaction kettle, kept for 2 to 5 hours, left to cool, and finally adjusted the pH to 9-10 to obtain the finished product; compared with the commercially available low-molecular deinking agent, the final product The product has a higher molecular weight and a stronger ability to disperse, trap and emulsify the ink. It can be used alone or in combination with a low-molecular-weight surfactant as a deinking agent. Recycled paper has high whiteness and low residual ink, which is suitable for flotation deinking of waste magazine paper.