Abstract: Provided are: an oxime ester compound that is useful as a photopolymerization initiator used in a polymerizable composition; and a photopolymerization initiator containing the oxime ester compound. The oxime ester compound contains, in the same molecule: a group represented by the following Formula (I); and a photoradical cleavable group containing no oxime ester group: wherein, R1 and R2 each independently represent a hydrogen atom, a halogen atom, a nitro group, a cyano group or the like; one or more hydrogen atoms in the groups represented by R1 and R2 are optionally substituted with a halogen atom, a nitro group, a cyano group or the like; one or more methylene groups in the groups represented by R1 and R2 are optionally substituted with —O—, —CO—, —COO—, —OCO—, —NR3— or the like, provided that oxygen atoms are not arranged adjacent to one another; R3 represents a hydrogen atom or a hydrocarbon group having 1 to 20 carbon atoms; n represents 0 or 1; and * represents a bond.

Abstract: Provided are: a negative photosensitive composition which exhibits excellent sensitivity at the time of being cured and yields a cured article having excellent heat resistance; a cured article thereof; and a method of curing the same.

Abstract: Provided are: a positive photosensitive composition that exhibits excellent sensitivity at a time of being cured; a pattern using the same; and a method of producing a pattern.

Abstract: An novel epoxy compound is represented by the general formula (I) and has a benzo- or naphtho-cycloalkane skeleton: X, Y, and Z each independently represent an alkyl group having 1-10 carbon atoms and optionally substituted with a halogen atom, an aryl group having 6-20 carbon atoms and optionally substituted with a halogen atom, an arylalkyl group having 7-20 carbon atoms and optionally substituted with a halogen atom, a heterocyclic group having 2-20 carbon atoms and optionally substituted with a halogen atom, or a halogen atom; k represents a number of 0-4; p represents a number of 0-8; r represents a number of 0-4; n represents 0-10; x represents a number of 0-4; y represents a number of 0-4; a sum of x and y is 2-4; and an optical isomer that exists when n is not 0 may be of any type.

Abstract: An novel epoxy compound is represented by the general formula (I) and has a benzo- or naphtho-cycloalkane skeleton: X, Y, and Z each independently represent an alkyl group having 1-10 carbon atoms and optionally substituted with a halogen atom, an aryl group having 6-20 carbon atoms and optionally substituted with a halogen atom, an arylalkyl group having 7-20 carbon atoms and optionally substituted with a halogen atom, a heterocyclic group having 2-20 carbon atoms and optionally substituted with a halogen atom, or a halogen atom; k represents a number of 0-4; p represents a number of 0-8; r represents a number of 0-4; n represents 0-10; x represents a number of 0-4; y represents a number of 0-4; a sum of x and y is 2-4; and an optical isomer that exists when n is not 0 may be of any type.