The present invention relates to a continuous process for preparing a comb polymer, without organic solvent, by esterification and/or amidification of an acidic homopolymer or copolymer, which consists in performing the esterification and/or amidification of said homopolymer/copolymer by reaction at elevated temperature in the mixing and transportation zone of a tubular reactor, optionally equipped with a water removal system, in the presence of at least one poly(alkylene glycol) in solid or molten form and of an antioxidant, said esterification and/or amidification taking place at a temperature greater than or equal to 170 C.

An object of the present invention is to provide a plated layer forming composition which is capable of forming a plated layer having excellent alkali resistance and is capable of forming a metal layer on the plated layer even in the case of forming the plated layer by exposure with a low exposure amount; a film having a plated-layer precursor layer; a film having a patterned plated layer; an electroconductive film; and a touch panel. The plated layer forming composition of the present invention includes a polymer having a group capable of interacting with a plating catalyst or a precursor thereof, and a polyfunctional monomer having three or more acrylamide groups or methacrylamide groups.

An object of the present invention is to provide a plated layer forming composition which is capable of forming a plated layer having excellent alkali resistance and is capable of forming a metal layer on the plated layer even in the case of forming the plated layer by exposure with a low exposure amount; a film having a plated-layer precursor layer; a film having a patterned plated layer; an electroconductive film; and a touch panel. The plated layer forming composition of the present invention includes a polymer having a group capable of interacting with a plating catalyst or a precursor thereof, and a polyfunctional monomer having three or more acrylamide groups or methacrylamide groups.

The wet adhesion of a coating composition may be improved through the use of voided latex particles as opacifying agents which contain a hollow interior as well as an outer shell of a polymer containing functional groups such as amino, 1,3-diketo, urea or ureido. Other types of functional groups may be introduced to the outer shell polymer in order to vary other desired characteristics of the coating. The voided latex particles are non-film-forming.

The wet adhesion of a coating composition may be improved through the use of voided latex particles as opacifying agents which contain a hollow interior as well as an outer shell of a polymer containing functional groups such as amino, 1,3-diketo, urea or ureido. Other types of functional groups may be introduced to the outer shell polymer in order to vary other desired characteristics of the coating. The voided latex particles are non-film-forming.

The wet adhesion of a coating composition may be improved through the use of voided latex particles as opacifying agents which contain a hollow interior as well as an outer shell of a polymer containing functional groups such as amino, 1,3-diketo, urea or ureido. Other types of functional groups may be introduced to the outer shell polymer in order to vary other desired characteristics of the coating. The voided latex particles are non-film-forming.

An aqueous dispersion and a film forming method are provided. The aqueous dispersion contains water and particles including a resin and a photoradical generator and having a polymerizable group. The polymerizable group includes an ethylenic double bond. The proportion of the number of moles of the photoradical generator relative to the number of moles of the ethylenic double bonds in the particles is 4 mol % or more, and the proportion of the number of moles of the photoradical generator present as a solid relative to the total number of moles of the photoradical generator is 5 mol % or less.

Provided is a composition for steel sheet surface coating, the composition comprising colloidal silica, a silane, a monomer, an organic resin, an acidity adjuster, a long-term corrosion-resistance improver, and a solvent; and a steel sheet coated with the composition. The steel sheet has excellent acid resistance, and maintains thickness uniformity thereof even when exposed to an acid for an extended period of time.

Provided is a composition for steel sheet surface coating, the composition comprising colloidal silica, a silane, a monomer, an organic resin, an acidity adjuster, a long-term corrosion-resistance improver, and a solvent; and a steel sheet coated with the composition. The steel sheet has excellent acid resistance, and maintains thickness uniformity thereof even when exposed to an acid for an extended period of time.

A dental cement hardened by a cement reaction involving the specific polymerizable polyacidic polymer and optionally additional crosslinkable groups, has reduced shrinkage and improved mechanical properties, in particular with regard to flexural strength and fracture toughness. Moreover, the specific polymerizable polyacidic polymer of the present invention contains a high number of acidic groups which is not reduced by the presence of polymerizable moieties, whereby water solubility of the uncured polymer is not impaired by the presence of the polymerizable moieties.