Polymer mixture and method for production thereof

摘要

A method for producing a polymer mixture by polymerizing a (meth)acrylic acid type monomer in the presence of a compound possessing a polyalkylene glycol structure, wherein the amount of water for initial charging is less that 90 parts by mass based on 100 parts bymass of the compound possessing the polyalkylkyleneglycol structure and the amount of water existing at the time of completion of the addition of the (meth)acrylic acid type monomer is in the range of 1-100,000 parts by mass based on 100 parts by mass of the compound possessing the polyalkylene glycol structure is provided. The produced polymer mixture excels in the preservation stability.