The alkyl methacrylate preferably is at least one member selected among methyl methacrylate, ethyl methacrylate, propyl methacrylate, and butyl methacrylate.

33 % or more but not more than 37 % of butyl methacrylate — methacrylic acid copolymer

33 % or more but not more than 37 % of butyl methacrylate — methacrylic acid copolymer

Preferred are block copolymers of styrene, methyl methacrylate and butyl methacrylate as one block and salts or esters of methacrylic acid or acrylic acid as the other block in the copolymer.

An ozone-friendly correction fluid includes a non-halogenated solvent, a butyl methacrylate copolymer as the polymeric film-forming material, a plasticizer, and an opacifying agent.