Outlook on Organic Phosphonate Corrosion and Scale Inhibitors

Since the development of organic phosphine water treatment agent HEDP in foreign countries in the 1960s, organic phosphine salt water treatment agents have undergone generations of development. The first generation organic phosphonic acid salt water treatment agents HEDP and ATMP, as corrosion and scale inhibitors, dominated phosphorus based formulations for nearly 20 years until the late 1970s, when PBTC emerged to meet the needs of high concentration ratios. Subsequently, with the emergence of HPA in the mid-1980s, it formed the expected all organic water treatment agent that could compete with metal ion formulations. In the 1990s, there was further development of organic phosphonic acid salt water treatment agents, with products represented by polyamino polyether methylphosphonic acid (PAPEMP) and POCA. Its main feature was the increase in molecular size, leading to the emergence of large molecule organic phosphonic acid salt water treatment agents. Since the early 1990s, the demand for organic phosphates has continued to grow and will continue to maintain the current situation for a long time to come. Many water treatment companies are developing new types of organic phosphates, such as introducing sulfonic acid groups into organic phosphate molecules, which presents an optimistic prospect for organic phosphates. Therefore, the introduction of macromolecular organic phosphonates, efficient and low phosphorus content organic phosphonates, and sulfonic acid groups as efficient and multifunctional organic phosphonates has become a hot topic in the research and development of industrial water treatment agents.