Provided is a resin composition that can provide a cured product of low dielectric tangent, high mechanical strength, and high adhesiveness. The resin composition contains (A) a resin having a thermosetting functional group FA, (B) a resin having a radical polymerizable functional group FB, and (C) a resin having a functional group FA reacting with the thermosetting functional group FA and a functional group FB reacting with the radical polymerizable functional group FB. A number n.sub.a of the functional group FA of the component (C) when the number of the thermosetting functional group FA of the component (A) is defined as 1 and a number n.sub.b of the functional group FB of the component (C) when the number of the radical polymerizable functional group FB of the component (B) is defined as 1 satisfy 0.01n.sub.a200 and 0.01n.sub.b400, respectively.

Methods for determining the concentration of transition metal compounds in a solution containing more than one transition metal compound are described. Polymerization reactor systems providing real-time monitoring and control of the concentrations of the transition metal components of a multicomponent catalyst system are disclosed, as well as methods for operating such polymerization reactor systems and for improving methods of preparing the multicomponent catalyst system.

Methods for determining the concentration of transition metal compounds in a solution containing more than one transition metal compound are described. Polymerization reactor systems providing real-time monitoring and control of the concentrations of the transition metal components of a multicomponent catalyst system are disclosed, as well as methods for operating such polymerization reactor systems and for improving methods of preparing the multicomponent catalyst system.

A transfer sheet includes a cured liquid crystal composition layer, a block layer including a (meth)acrylic polymer, and a thermoplastic welded layer in this order, the thermoplastic welded layer and the block layer are in direct contact with each other, and the thermoplastic welded layer includes a thermoplastic resin and an ultraviolet curable resin.

A curing accelerator can exhibit good curing acceleration performance and is excellent in storage stability, while maintaining sufficient pot life in a curing reaction of radical-polymerizable resins, and a radical-polymerizable resin composition uses the curing accelerator. The curing accelerator for radical-polymerizable resins includes a metal-containing compound (A), a thiol compound (B) and an aprotic solvent (C) having a dielectric constant of 10 or less, wherein the metal-containing compound (A) is one or more compounds selected from a metal soap (A1) and a -diketone skeleton-having metal complex (A2), the thiol compound (B) is one or more compounds selected from a mono-functional primary thiol compound (B1), a secondary thiol compound (B2) and a tertiary thiol compound (B3), and the content of the aprotic solvent (C) is 10 to 1,000 parts by mass relative to 100 parts by mass of the total of the metal-containing compound (A) and the thiol compound (B).

A curing accelerator can exhibit good curing acceleration performance and is excellent in storage stability, while maintaining sufficient pot life in a curing reaction of radical-polymerizable resins, and a radical-polymerizable resin composition uses the curing accelerator. The curing accelerator for radical-polymerizable resins includes a metal-containing compound (A), a thiol compound (B) and an aprotic solvent (C) having a dielectric constant of 10 or less, wherein the metal-containing compound (A) is one or more compounds selected from a metal soap (A1) and a -diketone skeleton-having metal complex (A2), the thiol compound (B) is one or more compounds selected from a mono-functional primary thiol compound (B1), a secondary thiol compound (B2) and a tertiary thiol compound (B3), and the content of the aprotic solvent (C) is 10 to 1,000 parts by mass relative to 100 parts by mass of the total of the metal-containing compound (A) and the thiol compound (B).

Provided are a curable composition, a cured film, an optical filter, a solid image pickup element, an image display device, an infrared sensor, a dispersing auxiliary agent, a dispersion, and a method of manufacturing a dispersion. With the curable composition, a cured film having excellent moisture resistance in which the formation of an aggregate derived from a compound having a colorant skeleton is suppressed can be formed. This curable composition includes: a compound A having a structure in which at least one functional group selected from an acid group having a pKa of 3 or lower and a Clog P value of 1.1 or higher, an anionic group obtained by dissociating one or more hydrogen atoms from the acid group, or a salt of the acid group is bonded to a -conjugated structure of a colorant skeleton and having a maximum absorption wavelength in a wavelength range of 650 to 1200 nm; a curable compound; and a solvent.

The invention is related to azetidinium-containing copolymers and vinylic monomers and their uses in formation of non-silicone hydrogel coatings on silicone hydrogel contact lenses.

The invention is related to azetidinium-containing copolymers and vinylic monomers and their uses in formation of non-silicone hydrogel coatings on silicone hydrogel contact lenses.

A photosensitive resin composition is also provided that includes a polymer precursor selected from a polyimide precursor and a polybenzoxazole precursor; a photo-radical polymerization initiator; and a solvent, in which an acid value of an acid group contained in the polymer precursor and having a neutralization point in a pH range of 7.0 to 12.0 is in a range of 2.5 to 34.0 mgKOH/g, and either the polymer precursor contains a radically polymerizable group or the photosensitive resin composition includes a radically polymerizable compound other than the polymer precursor.