Abstract: An oxime ester compound represented by general formula (I): wherein R1, R2, and R3 each independently represent R11, OR11, COR11, SR11, CONR12R13, or CN; R11, R12, and R13 each independently represent a hydrogen atom, an alkyl group having 1 to 20 carbon atoms, an aryl group having 6 to 30 carbon atoms, an arylalkyl group having 7 to 30 carbon atoms, or a heterocyclic group having 2 to 20 carbon atoms, R4 and R5 each independently represent R11, OR11, SR11, COR11, CONR12R13, NR12COR11, OCOR11, COOR11, SCOR11, OCSR11, COSR11, CSOR11, CN, a halogen atom, or a hydroxyl group; and a and b each independently represent 0 to 3.

Abstract: An oxime ester compound represented by general formula (I): wherein R1, R2, and R3 each independently represent R11, OR11, COR11, SR11, CONR12R13, or CN; R11, R12, and R13 each independently represent a hydrogen atom, an alkyl group having 1 to 20 carbon atoms, an aryl group having 6 to 30 carbon atoms, an arylalkyl group having 7 to 30 carbon atoms, or a heterocyclic group having 2 to 20 carbon atoms, R4 and R5 each independently represent R11, OR11, SR11, COR11, CONR12R13, NR12COR11, OCOR11, COOR11, SCOR11, OCSR11, COSR11, CSOR11, CN, a halogen atom, or a hydroxyl group; and a and b each independently represent 0 to 3.

Abstract: A novel compound having satisfactory sensitivity (base generating performance), a photosensitive resin composition containing the compound as a photo-initiator, and a cured product of the composition are provided. Specifically, a compound represented by general formula (1) (compound (1)), a photosensitive resin composition containing (A) a photo-initiator including at least one compound (1) and (B) a photosensitive resin are provided. Preferred are the compound (1) in which R1 is an unsubstituted or substituted C6-C20 aromatic hydrocarbon group, the compound (1) in which at least one of R5, R6, R7, R8, R9, R10, and R11 is nitro, and the compound (1) in which n is 0. The symbols in general formula (1) are as defined in the description.

Abstract: A novel compound having satisfactory sensitivity (base generating performance), a photosensitive resin composition containing the compound as a photo-initiator, and a cured product of the composition are provided. Specifically, a compound represented by general formula (1) (compound (1)), a photosensitive resin composition containing (A) a photo-initiator including at least one compound (1) and (B) a photosensitive resin are provided. Preferred are the compound (1) in which R1 is an unsubstituted or substituted C6-C20 aromatic hydrocarbon group, the compound (1) in which at least one of R5, R6, R7, R8, R9, R10, and R11 is nitro, and the compound (1) in which n is 0. The symbols in general formula (1) are as defined in the description.

Abstract: An alkali developable photosensitive resin composition contains (J) a photopolymerizable unsaturated compound having a structure resulting from the addition reaction of (B) a compound having a ?-diketone moiety or a compound having a ?-ketoester group to the (meth)acryloyl group of (A) a compound having at least two (meth)acryloyl groups and a hydroxyl group and subsequent esterification of the hydroxyl group of the resulting addition product with (C) a polybasic acid anhydride. The compound having a ?-diketone moiety is preferably a novel ?-diketone compound represented by general formula (I): wherein R1 is a C1-C20 alkyl group; R2 represents R11, OR11, COR11, SR11, CONR12R13, or CN; R11, R12, and R13 are each hydrogen, a C1-C20 alkyl group, etc.; a is 0 to 3; and b is 0 to 4.

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: A novel compound is a highly-sensitive photopolymerization initiator with excellent stability, low sublimability, excellent developability, and high transmittance in the visible region. It efficiently absorbs, and is activated by, near-ultraviolet rays such as at 365 nm. Also provided are a photopolymerization initiator and a photosensitive composition using such compound. An oxime ester compound is represented by the following general formula (I), a photopolymerization initiator containing the same, and a photosensitive composition containing the photopolymerization initiator and a polymerizable compound having an ethylenically unsaturated bond: R1 and R2 each represent R11, COR11, CONR12R13, CN, etc.; R11, R12, and R13 each represent a C1-20 alkyl group, etc.; R3 and R4 each represent R11, OR11, COR11, CONR12R13, OCOR11, CN, a halogen atom, etc.; a and b each represent an integer 0-4; X represents an oxygen atom, a sulfur atom, etc.

Abstract: An oxime ester compound represented by general formula (I): wherein R1 and R2 each independently represent R11, OR11, COR11, SR11, CONR12R13, or CN; R11, R12, and R13 each independently represent a hydrogen atom, an alkyl group having 1 to 20 carbon atoms, an aryl group having 6 to 30 carbon atoms, an arylalkyl group having 7 to 30 carbon atoms, or a heterocyclic group having 2 to 20 carbon atoms, R3 and R4 each independently represent R11, OR11, SR11, COR11, CONR12R13, NR12COR11, OCOR11, COOR11, SCOR11, OCSR11, COSR11, CSOR11, CN, a halogen atom, or a hydroxyl group; a and b each independently represent 0 to 4; X represents an oxygen atom, a sulfur atom, a selenium atom, CR31R32, CO, NR33, or PR34; R31, R32, R33, and R34 each independently represent R11, OR11, COR11, SR11, CONR12R13, or CN.

Abstract: The invention provides a novel compound useful as a highly-sensitive photopolymerization initiator that has excellent stability, low sublimability, excellent developability, and high transmittance in the visible region and that efficiently absorbs, and is activated by, near-ultraviolet rays such as at 365 nm. Also provided are a photopolymerization initiator and a photosensitive composition using the above-described compound. Specifically, the invention provides an oxime ester compound represented by the following general formula (I), a photopolymerization initiator containing the same, and a photosensitive composition containing the photopolymerization initiator and a polymerizable compound having an ethylenically unsaturated bond: wherein, R1 and R2 each represent R11, COR11, CONR12R13, CN, etc.; R11, R12, and R13 each represent a C1-20 alkyl group, etc.; R3 and R4 each represent R11, OR11, COR11, CONR12R13, OCOR11, CN, a halogen atom, etc.

Abstract: An alkali developable photosensitive resin composition contains (J) a photopolymerizable unsaturated compound having a structure resulting from the addition reaction of (B) a compound having a ?-diketone moiety or a compound having a ?-ketoester group to the (meth)acryloyl group of (A) a compound having at least two (meth)acryloyl groups and a hydroxyl group and subsequent esterification of the hydroxyl group of the resulting addition product with (C) a polybasic acid anhydride. The compound having a ?-diketone moiety is preferably a novel ?-diketone compound represented by general formula (I): wherein R1 is a C1-C20 alkyl group; R2 represents R11, OR11, COR11, SR11, CONR12R13, or CN; R11, R12, and R13 are each hydrogen, a C1-C20 alkyl group, etc.; a is 0 to 3; and b is 0 to 4.

Abstract: Disclosed is an oxime ester compound represented by the general formula (I). (I) wherein R1 and R2 independently represent R11, OR11, COR11, SR11, CONR12R13 or CN; R11, R12 and R13 independently represent a hydrogen atom, an alkyl group having 1 to 20 carbon atoms, an aryl group having 6 to 30 carbon atoms, an arylalkyl group having 7 to 30 carbon atoms, or a heterocyclic group having 2 to 20 carbon atoms; R3 and R4 independently represent R11, OR11, SR11, COR11, CONR12R13, NR12COR11, OCOR11, COOR11, SCOR11, OCSR11, COSR11, CSOR11, CN, a halogen atom, or a hydroxyl group; a and b independently represent a number of 0 to 4; X represents an oxygen atom, a sulfur atom, a selenium atom, CR31R32, CO, NR33 or PR34; and R31, R32, R33 and R34 independently represent R11, OR11, COR11, SR11, CONR12R13 or CN.

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: Disclosed is an oxime ester compound represented by the following general formula (I). (In the formula, R1, R2 and R3 independently represent R11, OR11, COR11, SR11, CONR12R13 or CN; R11, R12 and R13 Independently represent a hydrogen atom, an alkyl group having 1-20 carbon atoms, an aryl group having 6-30 carbon atoms, an arylalkyl group having 7-30 carbon atoms or a heterocyclic group having 2-20 carbon atoms; R4 and R5 independently represent R11, OR11, SR11, COR11, CONR12R13, NR12COR11, OCOR11, COOR11, SCOR11, OCSR11, COSR11, CSOR11, CN, a halogen atom or a hydroxy group; and a and b independently represent a number of 0-3.