A fluid loss agent comprising polymers or copolymers of amido-sulfonic acid containing monomers or salts thereof

摘要

A fluid loss agent comprising homopolymers or copolymers from amido-sulfonic acid or salt containing monomers obtainable in the presence of high energy mechanical mixing utilizing a final stage polymerisation temperature of from about 93°C (200°F) to below the degradation temperature of the monomer.