Anti-fogging compositions and anti-fogging products

Abstract

This invention relates to an antifogging composition comprising a polymer (A), colloidal silica (B), and a solvent (C). In the antifogging composition, the copolymer (A) is a (meth)acrylate copolymer obtained from a mixture of monomers comprising monomers (A-1) represented by general formula (1) and monomers (A-2) represented by general formula (2). The solvent (C) comprises a monohydric alcohol solvent (C-1) having 1 to 4 straight-chain alkyl or branched alkyl groups, a monohydric alcohol solvent (C-2) having a boiling point of 100°C or higher and 200°C or lower at one atmosphere, and a monohydric alcohol solvent (C-2) having a boiling point of 150°C or higher at one atmosphere. The composition comprises a di- to triol solvent (C-3), a solvent having a cyclic structure (C-4), and water (C-5), wherein, relative to 100 parts by weight of the copolymer (A), the solvent (C-1) is 650 to 1700 parts by weight, the solvent (C-2) is 150 to 1000 parts by weight, the solvent (C-3) is 30 to 500 parts by weight, the solvent (C-4) is 10 to 400 parts by weight, and the water (C-5) is 300 to 1400 parts by weight; the antifogging composition is capable of forming an antifogging coating that is not prone to water stains and has excellent transparency, antifogging properties, adhesion, and resistance to whitening.