Processo para preparar polímeros e aperfeiçoamentos em detergentes, dispersantes de pigmentos, aditivos para o tratamento de água e inibidor de incrustações

摘要

A process for preparing polymers having molecular weights below 5,000 and polydispersity below 2.5 is provided. The polymerization is conducted in supercritical carbon dioxide at temperatures of at least 200 DEG C and pressures above 3,500 psi. The process can be continuous, semi-continuous, or batch. The polymers are useful as detergent additives, scale inhibitors, dispersants and crystal growth modifiers.