Abstract: Disclosed is a composition containing: a cross-linked body of a hydrophilic polymer having a cross-linkable functional group; and a photo-radical generating agent. The cross-linked body is a hydrophilic polymer cross-linked through a disulfide bond.

Abstract: An adhesive set is disclosed. This adhesive set includes a main agent containing a compound having two or more isocyanate groups and a curing agent containing a compound having two or more hydroxyl groups. At least one of the compound having two or more isocyanate groups and the compound having two or more hydroxyl groups has a disulfide bond in the molecule. At least one of the main agent and the curing agent further contains a curing catalyst. At least one of the main agent and the curing agent further contains a photoradical generator.

Abstract: In an optical fiber drawing device of the present invention, as an operational parameters corresponding to the real drawing speed in the duration from the moment of starting the operation of the optical fiber drawing device till the moment of reaching the target drawing speed are extracted from operational parameters stored in a operational parameter storage unit and applied to the optical fiber drawing device. The operational parameters include a base preform feeding speed, a target variation of real drawing speed, a gain multiplied by the speed element related with the variation of the real drawing speed, an operation cycle, a drawing furnace temperature, a coating resin pressure to coat the optical fiber, and flow of cooling gaseous helium, etc.

Abstract: The present invention is directed to a dendritic polyamidoamine phthalocyanine derivative which is useful as, for example, a fluorescent material or a photodynamic therapeutic drug for cancer. The derivative is represented by the following formula (1): (wherein each member of one to eight of R1 to R8 is a polyamidoamine dendron represented by the following formula (a): (wherein p is a number from 1 to 4; R9 represents —NH(CH2)tNH2 or OR10 (wherein R10 represents an alkyl group); and each of l, m, q, and t is a number from 1 to 8), and each member of the remainder represents a hydrogen atom; M represents a metal atom having a valency of two or more; and a ring marked with (N) is a benzene ring, a pyridine ring, or a pyrazine ring).

Abstract: The present invention is directed to a dendritic polyamidoamine phthalocyanine derivative which is useful as, for example, a fluorescent material or a photodynamic therapeutic drug for cancer. The derivative is represented by the following formula (1): (wherein each member of one to eight of R1 to R8 is a polyamidoamine dendron represented by the following formula (a): (wherein p is a number from 1 to 4; R9 represents —NH(CH2)NH2 or OR10 (wherein R10 represents an alkyl group); and each of l, m, q, and t is a number from 1 to 8), and each member of the remainder represents a hydrogen atom; M represents a metal atom having a valency of two or more; and a ring marked with (N) is a benzene ring, a pyridine ring, or a pyrazine ring).

Abstract: In an optical fiber drawing device of the present invention, as an operational parameters corresponding to the real drawing speed in the duration from the moment of starting the operation of the optical fiber drawing device till the moment of reaching the target drawing speed are extracted from operational parameters stored in a operational parameter storage unit and applied to the optical fiber drawing device. The operational parameters include a base preform feeding speed, a target variation of real drawing speed, a gain multiplied by the speed element related with the variation of the real drawing speed, an operation cycle, a drawing furnace temperature, a coating resin pressure to coat the optical fiber, and flow of cooling gaseous helium, etc.

Abstract: A rack and pinion type steering apparatus is provided with a rack guide made of synthetic resin. In the outer periphery of the rack guide, peripheral ribs are formed in the direction of its circumference and axial ribs are formed in its longitudinal direction, respectively. The space formed between those ribs and the inner periphery of a guide bore of the rack guide is set to be generally about the same as the space between a conventional rack guide made of sintered alloy and the inner periphery of the guide bore. As a result, at room temperature, each rib enables the same press performance as the conventional rack guide and the suitable reacting force at steering will be kept. Also at high temperature atmosphere, when each rib thermally expands and abuts the guide bore, the outer periphery excluding the portions of the ribs is thermally expanded, thus, thermal creep is prevented and stable engagement of the rack and pinion of the steering apparatus can be maintained at all times.