Abstract: A reflector for a circular polarization antenna is described, comprising(A) a thermoplastic resin layer having a thickness of from 5 .mu.m to 5 mm or a coating layer having a thickness of 5 .mu.m to 1 mm and good weather resistance;(B) a metallic layer having a thickness of from 5 .mu.m to 1 mm; and(C) an inorganic filler-containing thermoplastic resin layer having a thickness of from 500 .mu.m to 15 mm and an inorganic filler content of from 10 to 80% by weight.

Abstract: A propylene polymer composition comprising (A) a modified propylene polymer obtained by treating: (1) 100 parts by weight of a propylene polymer or a mixture of a propylene homopolymer and a ethylene-propylene copolymer rubber, with (2) 0.1 to 50 parts by weight of an organic compound having at least one unsaturated bond in the molecule and a hydroxyl group and (3) 0.01 to 20 parts by weight of an organic peroxide; and (B) a propylene polymer, wherein content of the component (A) in the composition is 5 to 50% by weight. This composition may further contain one or more of (C) an amorphous ethylene-propylene copolymer having a propylene content of 20% to 50% by weight and a Mooney viscosity ML.sub.1+4 at 100.degree. C. of 20 to 100, (D) a high-density ethylene copolymer having a density of 0.935 g/cm.sup.3 or more, (E) a linear low-density ethylene copolymer having a density of not less than 0.900 g/cm.sup.3 but less than 0.935 g/cm.sup.2, a melting point of 106.degree. C. to 130 C., a melt flow rate of 0.