Triethanolamine

Product Description Chemical properties White crystalline solid with weak alkalinity. Uses Used as pharmaceutical raw materials, solvent for photographic developer, solvent for paraffin oil in rayon, emulsifier for cosmetics, etc. Triisopropanolamine can be used as gas absorbent and antioxidant; as grinding aid in cement industry; as refining agent, antistatic agent, dyeing aid, fiber wetting agent in fiber industry; in lubricating oil and cutting oil It can be used as antioxidant and plasticizer; as a cross-linking agent in the plastic industry; it can also be used as a dispersant for titanium dioxide, minerals, and a curing agent in the polyurethane industry. Uses are mainly used for the synthesis of intermediates, and as a chain extender on PU and as a neutralizing agent on daily chemicals. The production method uses liquid ammonia and propylene oxide as raw materials, uses water as a catalyst, prepares materials according to the molar ratio of liquid ammonia and propylene oxide as 1 Chemicalbook: 3.00~3.05, and adds deionized water at one time, and the dosage ensures that the concentration of ammonia water is 28~ 60%; liquid ammonia and propylene oxide are divided into two feeds, each time first add half the amount of liquid ammonia, keep the temperature at 20 ~ 50 ºC, then slowly add half the amount of propylene oxide, stir well, and keep the kettle The internal pressure is below 0.5 MPa, the reaction temperature is 20 to 75 ° C, and is maintained for 1.0 to 3.0 hours; after the addition of propylene oxide, the temperature of the reaction kettle is controlled to 20 to 120 ° C, and the reaction is continued for 1.0 to 3.0 hours. When the water content is less than 5%, a triisopropanolamine product is obtained. The method can effectively suppress the production of monoisopropanolamine and diisopropanolamine, has simple process and low investment cost.