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CHEMICAL MODIFICATION OF (METH)ACRYLIC ACID HOMOPOLYMERS AND ALKYL (METH) ACRYLATE POLYMERS IN AQUEOUS SYSTEMS WITH AMINO SULFONIC ACIDS
CHEMICAL MODIFICATION OF (METH)ACRYLIC ACID HOMOPOLYMERS AND ALKYL (METH) ACRYLATE POLYMERS IN AQUEOUS SYSTEMS WITH AMINO SULFONIC ACIDS
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机译:含磺酸磺酸的水性体系中(甲基)丙烯酸均聚物和丙烯酸(甲基)丙烯酸酯聚合物的化学改性
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摘要
The invention comprises a method of preparing copolymers of acrylamido sulfonic acids which comprises converting to acrylamido sulfonic groups at least 5 mole % of the acrylic acid or methacrylic acid groups in a polymer which contains at least 5 mole % of these monomers in its structures by reacting an aqueous solution of the acrylic acid or methacrylic acid polymer with an amino sulfonic acid under pressure at a temperature of at least 70 C. for a period of time sufficient to convert at least 5 mole % of the acrylic acid or methacrylic acid groups in the polymer to amido sulfonic acid groups corresponding to the starting amino sulfonic acid.
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