Low molecular weight, water-soluble phosphinate and phosphonate-containing polymers, and their preparation.

摘要

A process to efficiently utilize the chain transfer agent, hypophosphorus acid or salts, in the preparation of low molecular weight carboxylate polymers is provided and comprises employing in-process neutralization of the carboxylic acid monomer(s). A low molecular weight carboxylate polymer containing phosphinate and phosphonate functional groups and where not more than 20% of the phosphorus is present in inorganic non-polymeric compounds is also provided.