The present invention relates to a chemically amplified photoresist composition including an alkali-soluble resin including a (meth)acrylate-based resin containing a (meth)acrylate-based repeating unit in which a heterocyclic compound is substituted via a divalent functional group containing an alkylene sulfide having 1 to 20 carbon atoms.

This compound which has excellent solvent solubility and compatibility with a resin, and which can generate bases and radicals with high efficiency by being irradiated with active energy rays, is represented by formula (1), where, in formula (1), R.sub.1, R.sub.2, R.sub.3, R.sub.5 and R.sub.6 represent a hydroxy group or an alkoxy group; the R.sub.4's independently represent an organic group containing a thioether bond; R.sub.7 and R.sub.9 independently represent a hydrogen atom or an alkyl group with 1 to 4 carbons; R.sub.8 represents an alkylene group or an arylene group; and X represents an oxygen atom or a sulfur atom. A photopolymerization initiator can include said novel compound; and a photosensitive resin composition can include said photopolymerization initiator, from which a cured product can be obtained that has high sensitivity and no metal corrosion. ##STR00001##

A polymer compound modified by an acryloyl derivative and a polythiol compound are used for preparing a thiol-modified polymer compound by a Michael addition reaction of thiol and conjugated double bonds. In addition to achieving the structural goal of the thiol-modified polymer compound, the preparation method further has the following advantages: flexibly and effectively controlling the structure and constitution of a synthetic product, and the types and contents of a large number of compound molecular functional groups; using reagents having high biocompatibility, and effectively controlling the production cost and reducing the toxicity in the synthesis process; and obtaining, under the conditions of using safety reagents and simple reaction steps, thiol-modified biocompatible polymer compounds that can be used as extracellular matrix materials and maintain good raw material structure and biological activity, with the types and contents of functional groups adjusted according to requirements, and meeting multiple clinical application requirements.

A polymer compound modified by an acryloyl derivative and a polythiol compound are used for preparing a thiol-modified polymer compound by a Michael addition reaction of thiol and conjugated double bonds. In addition to achieving the structural goal of the thiol-modified polymer compound, the preparation method further has the following advantages: flexibly and effectively controlling the structure and constitution of a synthetic product, and the types and contents of a large number of compound molecular functional groups; using reagents having high biocompatibility, and effectively controlling the production cost and reducing the toxicity in the synthesis process; and obtaining, under the conditions of using safety reagents and simple reaction steps, thiol-modified biocompatible polymer compounds that can be used as extracellular matrix materials and maintain good raw material structure and biological activity, with the types and contents of functional groups adjusted according to requirements, and meeting multiple clinical application requirements.

Provided is a polymerizable composition including a compound represented by Formula (1), and an ultraviolet absorbing agent A having a maximum absorption wavelength on a shorter wavelength side than a maximum absorption wavelength of the compound represented by Formula (1). Provided are a polymer, an ultraviolet shielding material, a laminate, a compound, an ultraviolet absorbing agent, and a method of producing a compound. In Formula (1), R.sup.1 to R.sup.6 each independently represent a hydrogen atom or a substituent, where at least one of R.sup.1 to R.sup.6 represents a group that contains a polymerizable group having an ethylenically unsaturated bond.

##STR00001##

Provided is a polymerizable composition including a compound represented by Formula (1), and an ultraviolet absorbing agent A having a maximum absorption wavelength on a shorter wavelength side than a maximum absorption wavelength of the compound represented by Formula (1). Provided are a polymer, an ultraviolet shielding material, a laminate, a compound, an ultraviolet absorbing agent, and a method of producing a compound. In Formula (1), R.sup.1 to R.sup.6 each independently represent a hydrogen atom or a substituent, where at least one of R.sup.1 to R.sup.6 represents a group that contains a polymerizable group having an ethylenically unsaturated bond.

##STR00001##

A problem of the present invention is to provide a polymerizable compound and a polymerizable composition which cause little decrease in retardation and discoloration when a film-shaped polymer produced by polymerization is irradiated with ultraviolet/visible light for a long time at high temperature. A further problem is to provide a polymer produced by polymerizing the polymerizable composition and an optically anisotropic body using the polymer. As a result, a compound useful as a component of a polymerizable composition was obtained. An optically anisotropic body using a polymerizable liquid crystal composition containing the compound of the present invention is useful for application to an optical film and the like.

A problem of the present invention is to provide a polymerizable compound and a polymerizable composition which cause little decrease in retardation and discoloration when a film-shaped polymer produced by polymerization is irradiated with ultraviolet/visible light for a long time at high temperature. A further problem is to provide a polymer produced by polymerizing the polymerizable composition and an optically anisotropic body using the polymer. As a result, a compound useful as a component of a polymerizable composition was obtained. An optically anisotropic body using a polymerizable liquid crystal composition containing the compound of the present invention is useful for application to an optical film and the like.

Provided is a hydrophilizing treatment agent capable of forming a hydrophilic coating film in which the preferred hydrophilicity and antifogging properties are obtained and which has exceptional moist heat resistance and scratch resistance. A hydrophilizing treatment agent that includes: a hydrophilic polymer (A) having at least one of an alkoxysilyl group and a hydrolysate thereof, and also having a betaine structure, in each molecule; and a hydrophilic polymer (B) that is a hydrophilic polymer having an ionic functional group and/or a non-ionic hydrophilic polymer. B/(A+B) is 1.0-51.0%. The preferred moist heat resistance and scratch resistance of the hydrophilic coating film formed by the hydrophilizing treatment agent are obtained due to the hydrophilic polymer (A) and the hydrophilic polymer (B) forming an ionically crosslinked network or a dipole-dipole interaction network.

Provided is a hydrophilizing treatment agent capable of forming a hydrophilic coating film in which the preferred hydrophilicity and antifogging properties are obtained and which has exceptional moist heat resistance and scratch resistance. A hydrophilizing treatment agent that includes: a hydrophilic polymer (A) having at least one of an alkoxysilyl group and a hydrolysate thereof, and also having a betaine structure, in each molecule; and a hydrophilic polymer (B) that is a hydrophilic polymer having an ionic functional group and/or a non-ionic hydrophilic polymer. B/(A+B) is 1.0-51.0%. The preferred moist heat resistance and scratch resistance of the hydrophilic coating film formed by the hydrophilizing treatment agent are obtained due to the hydrophilic polymer (A) and the hydrophilic polymer (B) forming an ionically crosslinked network or a dipole-dipole interaction network.