Abstract: A flame retardant includes an ion complex formed from compounds including at least one first compound each selected from sulfuric acid or a compound having a sulfonic acid group and a second organic compound each having a cationic moiety. The ionic complex includes ionic bonding of sulfuric acid or a sulfonic acid group in the at least one first compound and at least one cationic moiety in the at least one second organic compound. At least one of the at least one first compound or the at least one second organic compound includes a high-molecular-weight compound.

Abstract: A projector includes: a projection optical device; an exterior housing; a shutter; and a support member, the shutter and support member are provided with an engagement structure including an engagement protrusion which being provided on either one of them, protrudes along a vertical axis, and an engagement groove which being provided on the other, and extending in a direction in which the shutter moves, guides a movement of the engagement protrusion by the engagement protrusion being inserted therein, and the engagement groove is provided in such a way that a start end at which the engagement protrusion is positioned in the closed position is positioned to the projection optical device projection side of a finish end at which the engagement protrusion is positioned in the open position.

Abstract: A projector includes a light source device and an exterior casing, wherein an engagement moving portion slant surface is formed at an engagement moving portion, the engagement moving portion slant surface abutting on an engaging protrusion in a sliding manner when the engagement moving portion is moved to a not-engaging position to press the engaging protrusion toward a top portion.

Abstract: A resin composition includes an aliphatic polyester; a second polymer compound other than the aliphatic polyester; and an organic phosphoric acid compound that has a phosphorus content of about 20% by mass or more.

Abstract: A flame retardant includes an ion complex formed from compounds including at least one first compound each selected from sulfuric acid or a compound having a sulfonic acid group and a second organic compound each having a cationic moiety. The ionic complex includes ionic bonding of sulfuric acid or a sulfonic acid group in the at least one first compound and at least one cationic moiety in the at least one second organic compound. At least one of the at least one first compound or the at least one second organic compound includes a high-molecular-weight compound.

Abstract: In a projection optical system comprising: two lens groups, and a curved plane mirror, wherein the projection optical system including two story structure, and having bend means for bending at least two times the light incident from an electro-optic modulator.

Abstract: A flame-retardant epoxy resin composition, as well as an electronic device, a laminated circuit board, a multilayered circuit board and a printed circuit board employing the flame-retardant epoxy resin composition are disclosed. The flame-retardant epoxy resin composition contains: an epoxy resin; an epoxy resin curing agent; and flame-retardant particles containing a metal hydrate. The flame-retardant particles are provided with a coating layer on the surfaces thereof and have a volume average particle diameter in a range from 1 to 500 nm.

Abstract: A casing for electronic device having a casing body for housing an electronic device and a foot part provided to be movable forward to and backward from a surface of the casing body and adapted to adjust inclination of the electronic device, the casing body has a boss that is formed to protrude on the inner surface of the casing body and in which a hole connecting the inside and outside of the casing body is formed, and the foot part has a grounding part exposed from the casing for an electronic device and abutted against an installation target surface and a shaft part housed within the boss and having a screw groove formed on its outer circumferential surface.

Abstract: According to an aspect of the invention, there is provided a flame-retardant resin composition comprising: a polycarbonate resin; flame-retardant particles that contain a metal hydrate, have thereon a coating layer containing an organic compound or a silicone, and have a volume average particle diameter of about 1 to 500 nm; and a flame-retardant auxiliary.

Abstract: A flame-retardant particle includes: a particle containing a compound having a structure represented by formula (1); and a coating particle that covers at least a part of a surface of the particle: -A(—O—CO—O—Ar)m??(1) wherein A represents a substituted or unsubstituted aromatic group; Ar represents a substituted or unsubstituted phenyl group; and m represents an integer of 1 to 3.

Abstract: A flame-retardant compound has a structure represented by formula (1): —X-A1(-O—CO—O—Ar1)m ??(1) wherein A1 represents a substituted or unsubstituted aromatic group, X represents a divalent group represented —S—, —O—, —CO—, —CN—, —CH2—, —C(CH3)2—, —CH(CH3)—, —NH—, —SO— or —SO2—; Ar1 represents a substituted or substituted phenyl group; and m represents an integer of 1 to 3.

Abstract: A sheath composition and a cable using the sheath composition are disclosed. The sheath composition contains a polyolefine resin and flame-retardant particles containing a metal hydrate. The flame-retardant particles are provided with a coating layer on the surfaces thereof and have a volume average particle diameter in a range from 1 to 500 nm.

Abstract: A resin composition includes a resin; a radical trapping agent that has at least one of a phenol group, a nitrogen atom and a sulfuric acid group; and a char-forming agent that has a carbonate group.

Abstract: A projector includes an exterior casing that includes an air intake port for introducing outside air into the interior thereof; and a cooling device that cools the interior of the exterior casing by the outside air introduced via the air intake port, in which the cooling device includes a first sirocco fan and a second sirocco fan that discharge air taken along axes of rotation of the fans to the direction along tangent of rotation, and an air intake port-side duct that guides the outside air introduced via the air intake port toward the first sirocco fan and the second sirocco fan, and in which the first sirocco fan and the second sirocco fan are disposed with axes of rotation thereof oriented so as to intersect with each other.

Abstract: A resin composition includes an aliphatic polyester; a second polymer compound other than the aliphatic polyester; and an organic phosphoric acid compound that has a phosphorus content of about 20% by mass or more.

Abstract: A flame-retardant resin composition comprising a biodegradable resin and flame-retardant particles having a volume average particle diameter in the range of 1 nm to 500 nm dispersed in the biodegradable resin, wherein the flame-retardant particles contain a metal hydrate and have a coating layer containing an organic compound or a polysilicone, and a flame-retardant resin-molded article comprising a biodegradable resin and flame-retardant particles having a volume average particle diameter of 1 nm to 500 nm dispersed in the biodegradable resin, wherein the flame-retardant particles comprise a metal hydrate, and the flame-retardant resin-molded article has a flame retardancy of HB or higher according to the UL-94 test.

Abstract: According to an aspect of the invention, there is provided a flame-retardant resin composition comprising: a polycarbonate resin; flame-retardant particles that contain a metal hydrate, have thereon a coating layer containing an organic compound or a silicone, and have a volume average particle diameter of about 1 to 500 nm; and a flame-retardant auxiliary.

Abstract: A surface-coated flame-retardant particle comprising a flame-retardant grain and a coated layer provided on a surface of the flame-retardant grain, wherein the coated layer comprises an organic compound or a polysilicone, the flame-retardant grain comprises a metal hydrate and has a volume average particle diameter of 1 to 500 nm, and the metal hydrate comprises Mg and at least one of Ca, Al, Fe, Zn, Ba, Cu, and Ni. Also provided is a flame-retardant resin composition comprising the surface-coated flame-retardant particle.