Abstract: A styrene-based resin composition containing a styrene-based resin (A) having a syndiotactic structure, a styrene-based elastomer (B), a compatibilizer (C), an inorganic filler (D), and a colorant (E), having a content of the styrene-based elastomer (B) of 2.0 to 30.0% by mass based on the total amount of the styrene-based resin (A) having a syndiotactic structure, the styrene-based elastomer (B) and the compatibilizer (C) as 100% by mass, and a content of the colorant (E) of 0.0001 to 6.5% by mass based on the entire amount of the styrene-based resin composition as 100% by mass.

Abstract: A chain for a V-pulley which is used by being endlessly trained between a pair of V-pulleys and in which blocks each having an end surface for coming into contact with the V-pulley are respectively disposed on the outer sides of outer link plates. The end surface of the block is formed into a convex surface constituted by the whole or part of a conical surface which has substantially the same apex angle as that of the inner wall of the V-pulley and has an axis parallel to the axis of a connecting pin. The block may be fixed with respect to the outer link plate or may be made rotatable about the axis of the cone.

Abstract: A mask in which an enclosure of an intake filtration chamber is partly or totally formed of a filtration medium so that a separate filtration medium need not be provided within the intake filtration chamber for replacement. The replacement of the filtration medium is effected by replacement of the entire intake filtration chamber. The invention provides a mask which is small in size and low in intake resistance and is free from a possible flow of contaminated air into the mask.