Abstract: An indwelling clip includes a pair of arm plate portions that can be opened in a substantially V shape with an elastic force and claw portions formed on respective tip portions of the arm plate portions. The indwelling clip also includes a fastening ring attached to the arm plate portions so as to be movable along a longitudinal direction of the pair of arm plate portions and be able to close the pair of arm plate portions by moving in a direction toward the claw portions. The arm plate portion is provided with a fluorescent body containing a fluorescent pigment emitting red or near infrared light by being irradiated with excitation light. According to some embodiments, the indwelling clip allows easy visual recognition of light emission of a fluorescent body from the outside of a hollow organ and enables excellent attachment stability to the inner wall of the hollow organ.

Abstract: An indwelling clip includes a clip main body having a pair of arm plate portions that can be opened in a substantially V shape with an elastic force and claw portions formed on respective tip portions of the arm plate portions. The indwelling clip also includes a fastening ring attached to the arm plate portions so as to be movable along a longitudinal direction of the pair of arm plate portions and be able to close the pair of arm plate portions by moving in a direction of the claw portions. An outer surface of the claw portion is provided with a fluorescent body containing a fluorescent pigment emitting red or near infrared light by being irradiated with excitation light.

Abstract: A workpiece treating method includes a step (1) of forming a stack including a support, a temporary fixing material and a workpiece wherein the material includes a layer containing a polymer (A) in a range of not less than 50 mass %, the polymer (A) including a structural unit represented by the formula (A1), and the workpiece is held on the material; a step (2) of processing the workpiece and/or transporting the stack; and a step (3) of applying a shear force to the material to thereby separate the workpiece from the support. R1 is a divalent organic group including at least one aromatic ring, each of two oxygen atoms bonded to R1 in (A1) is bonded to the aromatic ring, and, when R1 includes two or more aromatic rings, each of the two oxygen atoms is bonded to any one of the aromatic rings.

Abstract: In a method in which a workpiece, while being temporarily fixed on a support via a temporary fixing material, is processed and/or transported and thereafter the support and the workpiece are separated from each other by an irradiation separation method, a technique is shown which prevents the photo-degradation of the workpiece. A workpiece treating method includes a step of forming a stack including a support, a temporary fixing material and a workpiece wherein the temporary fixing material includes a layer (I) that contains a polymer (A) including a structural unit (A1); a step of processing the workpiece and/or transporting the stack; a step of applying light to the layer (I) through the support; and a step of separating the support and the workpiece from each other.

Abstract: A workpiece treating method includes a step (1) of forming a stack including a support, a temporary fixing material and a workpiece wherein the material includes a layer containing a polymer (A) in a range of not less than 50 mass %, the polymer (A) including a structural unit represented by the formula (A1), and the workpiece is held on the material; a step (2) of processing the workpiece and/or transporting the stack; and a step (3) of applying a shear force to the material to thereby separate the workpiece from the support. R1 is a divalent organic group including at least one aromatic ring, each of two oxygen atoms bonded to R1 in (A1) is bonded to the aromatic ring, and, when R1 includes two or more aromatic rings, each of the two oxygen atoms is bonded to any one of the aromatic rings.

Abstract: In a method in which a workpiece, while being temporarily fixed on a support via a temporary fixing material, is processed and/or transported and thereafter the support and the workpiece are separated from each other by an irradiation separation method, a technique is shown which prevents the photo-degradation of the workpiece. A workpiece treating method includes a step of forming a stack including a support, a temporary fixing material and a workpiece wherein the temporary fixing material includes a layer (I) that contains a polymer (A) including a structural unit (A1); a step of processing the workpiece and/or transporting the stack; a step of applying light to the layer (I) through the support; and a step of separating the support and the workpiece from each other.

Abstract: Provided are a resin composition capable of forming a cured film excellent in elongation properties; a polymer suitable as a component contained in the composition; a cured film formed from the composition; and an electronic part including the cured film. The resin composition includes (A) a polymer containing a structural unit represented by the formula (a1) and a structural unit represented by the formula (a2); and (F) a solvent, wherein in the formula (a1), R1s are each independently a hydrogen atom or hydroxyl group, provided that at least one R1 is hydroxyl group; and R2 is a hydrogen atom or a C1-4 alkyl group; and in the formula (a2), R3s are each independently a group having a cationic polymerizable group, or a hydrogen atom, provided that at least one R3 is a group having a cationic polymerizable group; and R4 is a hydrogen atom or a C1-4 alkyl group.