It is an object of the present invention to provide an unsaturated group-containing ester compound which can be used as a raw material of a curable composition using transesterification reaction and which is inexpensive and has a good curability, and a polymer, a thermosetting resin composition, and a curable composition which containing the unsaturated group-containing ester compound, respectively. An unsaturated group-containing ester compound having a chemical structure represented by the following general formula (1): ##STR00001## n.sub.1: 1 to 10 (in the formula, R.sub.1, R.sub.2, and R.sub.3 are the same or different and each is a hydrogen, an alkyl group, a carboxyl group, an alkyl ester group or a structure represented by R.sub.4-[COOR.sub.5]n.sub.1; R.sub.4 is an aliphatic, an alicyclic or an aromatic alkylene group with a number of atoms of 50 or less in the main chain, which may have one or more functional groups selected from the group consisting of an ester group, an ether group, an amide group, and a urethane and may have a side chain; R.sub.5 is an alkyl group having 50 or less carbon atoms; and in the compound represented by the general formula (1), the R.sub.4-[COOR.sub.5] group may be a lactone structure represented by the following general formula (1-1). ##STR00002## (R.sub.x is a hydrocarbon group having 2 to 10 carbon atoms which may have a branched chain.

According to the present invention, an actinic ray-sensitive or radiation-sensitive resin composition including a resin P having a repeating unit represented by General Formula (P1) and a compound that generates an acid having a pKa of −1.40 or more upon irradiation with actinic rays or radiation; and a resist film, a pattern forming method, and a method for manufacturing an electronic device, each using the composition, are provided.

##STR00001## M.sup.p represents a single bond or a divalent linking group. L.sup.p represents a divalent linking group. X.sup.p represents O, S, or NR.sup.N1. R.sup.N1 represents a hydrogen atom or a monovalent organic group. R.sup.p represents a monovalent organic group.

Polymerizable compositions are described which contain, as photoinitiator, at least one acyltin compound according to the general formula (I): ##STR00001##

Polymerizable compositions are described which contain, as photoinitiator, at least one acyltin compound according to the general formula (I): ##STR00001##

Polymer particles excellent in uniform dispersibility and the use thereof are provided. The polymer particles contain a surfactant, and have a coefficient of variation in the volume-based particle diameter distribution in the range from not less than 13.0% to not more than 25.0%. When 15.0 g of water is added to 5.0 g of the polymer particles so as to disperse the polymer particles in the water by performing a dispersion treatment for 60 minutes using an ultrasonic cleaner, and furthermore when an obtained dispersion liquid is put into a centrifuge tube with an inside diameter of 24 mm so as to be centrifuged, by a centrifugal separator, under conditions that K factor is 6943 and a rotating time is 30 minutes to recover a supernatant, a concentration of non-volatile components in the obtained supernatant is less than 3.5 wt. %.

Polymer particles excellent in uniform dispersibility and the use thereof are provided. The polymer particles contain a surfactant, and have a coefficient of variation in the volume-based particle diameter distribution in the range from not less than 13.0% to not more than 25.0%. When 15.0 g of water is added to 5.0 g of the polymer particles so as to disperse the polymer particles in the water by performing a dispersion treatment for 60 minutes using an ultrasonic cleaner, and furthermore when an obtained dispersion liquid is put into a centrifuge tube with an inside diameter of 24 mm so as to be centrifuged, by a centrifugal separator, under conditions that K factor is 6943 and a rotating time is 30 minutes to recover a supernatant, a concentration of non-volatile components in the obtained supernatant is less than 3.5 wt. %.

Provided are a coloring composition including a pigment, a pigment derivative, and a resin, in which an average primary particle diameter of the pigment is 70 nm or less, and an average primary particle diameter of the pigment derivative is more than 70 nm; a film formed of a coloring composition; a color filter; a method for manufacturing a color filter; a solid-state imaging element; and an image display device.

Provided are a curable composition for imprinting including a polymerizable compound, a photopolymerization initiator, and a particulate metal which has a particle diameter of 1 nm or larger, as measured by a single particle ICP-MASS method, and includes at least one kind of iron, copper, titanium, or lead, in which a content of the particulate metal is 100 ppt by mass to 30 ppb by mass with respect to a solid content of the composition; a method for producing the curable composition for imprinting; a cured product using the curable composition for imprinting; a pattern producing method; and a method for manufacturing a semiconductor element.

A photopolymerizable composition comprises at least a polymerizable resin, a photosensitizer, an annihilator, and a photoinitiator. The photosensitizer is formulated to absorb an excitation light signal received in a first range of wavelengths. The annihilator is formulated to emit a light signal in a second range of wavelengths different from the first. During the absorption of light by the photosensitizer in the first range of wavelengths, the annihilator emits a light signal in the second range, a photon energy of the emitted light signal being greater than a photon energy of the light signal received by the photosensitizer. The annihilator is also formulated to implement an energy transfer mechanism to excite the photoinitiator for polymerization of the resin. The excited photoinitiator is formulated to generate at least one polymerizable initiator to cause the polymerization reaction. Related methods, such as three-dimensional printing methods, and materials are also disclosed.

Involved are a diketone oxime ester compound shown in formula I and a manufacturing method therefor, and a photo-curable composition using the compound of formula I as a photoinitiator. The composition has extremely high light sensitivity and relatively low yellowing resistance when applied to prepare a color filter for a light resistance device such as a display screen.