Disclosed is an antifogging film-forming material obtained by reacting, in the presence of a quaternary ammonium salt or quaternary phosphonium salt, a copolymer represented by a certain general formula with a multifunctional epoxy compound having a solubility of 40-100 mass % in 25° C. water. The antifogging film-forming material is characterized by having a weight average molecular weight of 100,000-5,000,000. With this material, it becomes possible to obtain an antifogging article excellent in antifogging property, heat resistance, chemical resistance and abrasion resistance.

Disclosed is an antifogging film-forming material obtained by reacting, in the presence of a quaternary ammonium salt or quaternary phosphonium salt, a copolymer represented by a certain general formula with a multifunctional epoxy compound having a solubility of 40-100 mass % in 25° C. water. The antifogging film-forming material is characterized by having a weight average molecular weight of 100,000-5,000,000. With this material, it becomes possible to obtain an antifogging article excellent in antifogging property, heat resistance, chemical resistance and abrasion resistance.

A method for producing a cellulose and/or synthetic fibre-based support of which at least one surface is coated with a layer containing at least one water-soluble polymer comprising: hydroxyl or primary-secondary amino functional groups, at least some of which have been functionalized beforehand with at least one organic compound comprising at least one epoxy functional group, and at least one R.sup.1 group wherein R.sup.1 is a vinyl functional group or at least one Si(R.sup.2).sub.3 functional group and wherein R.sup.2=hydrogen atom, hydroxyl, alkoxy, alkyl, and combinations thereof.

A method for producing a cellulose and/or synthetic fibre-based support of which at least one surface is coated with a layer containing at least one water-soluble polymer comprising: hydroxyl or primary-secondary amino functional groups, at least some of which have been functionalized beforehand with at least one organic compound comprising at least one epoxy functional group, and at least one R.sup.1 group wherein R.sup.1 is a vinyl functional group or at least one Si(R.sup.2).sub.3 functional group and wherein R.sup.2=hydrogen atom, hydroxyl, alkoxy, alkyl, and combinations thereof.

To provide an aqueous composition for aqueous coating that contains a polymerized substance of a N-vinyl carboxylic acid amide and that dries efficiently when used to produce a coating substance. A composition for aqueous coating liquid, comprising at least a copolymer of a N-vinyl carboxylic acid amide monomer and a monomer of a salt of an unsaturated carboxylic acid, and water, in which the molar ratio between the N-vinyl carboxylic acid amide monomer and the monomer of a salt of an unsaturated carboxylic acid is 7.0:93.0 to 93.0:7.0, and the weight-average molecular weight of the copolymer is 15,000 to 2,500,000.

To provide an aqueous composition for aqueous coating that contains a polymerized substance of a N-vinyl carboxylic acid amide and that dries efficiently when used to produce a coating substance. A composition for aqueous coating liquid, comprising at least a copolymer of a N-vinyl carboxylic acid amide monomer and a monomer of a salt of an unsaturated carboxylic acid, and water, in which the molar ratio between the N-vinyl carboxylic acid amide monomer and the monomer of a salt of an unsaturated carboxylic acid is 7.0:93.0 to 93.0:7.0, and the weight-average molecular weight of the copolymer is 15,000 to 2,500,000.

To provide a surface treatment liquid capable of making a base material including polyorganosiloxane on at least a part of a surface thereof hydrophilic stably over a long period of time, and provide a surface treatment method using the surface treatment liquid. In a surface treatment liquid including (A) resin and a (B) solvent, as the (A) resin, resin having a functional group I that is a hydroxyl group and/or a cyano group is used, and a functional group II that is a hydrophilic group other than the functional group I, and a ratio of a structural unit having an anionic group to total structural units of the (A) resin is 5 mol % or less, or resin including a cationic group including an anion moiety and a cation moiety that can be bonded to the (A) resin is used.

To provide a surface treatment liquid capable of making a base material including polyorganosiloxane on at least a part of a surface thereof hydrophilic stably over a long period of time, and provide a surface treatment method using the surface treatment liquid. In a surface treatment liquid including (A) resin and a (B) solvent, as the (A) resin, resin having a functional group I that is a hydroxyl group and/or a cyano group is used, and a functional group II that is a hydrophilic group other than the functional group I, and a ratio of a structural unit having an anionic group to total structural units of the (A) resin is 5 mol % or less, or resin including a cationic group including an anion moiety and a cation moiety that can be bonded to the (A) resin is used.

Disclosed is a liquid polymerizable composition including a chain-growth polymerization dispersing monomer, a step-growth polymerization monomer system and inorganic nanoparticles homogeneously dispersed in the monomers, as well as its use for the preparation of a transparent polymeric material having a high refractive index and low haze and its use in the optical field.

Disclosed is a liquid polymerizable composition including a chain-growth polymerization dispersing monomer, a step-growth polymerization monomer system and inorganic nanoparticles homogeneously dispersed in the monomers, as well as its use for the preparation of a transparent polymeric material having a high refractive index and low haze and its use in the optical field.