Abstract: A multilayered heat-recoverable article according to the present invention includes a cylindrical base material layer and an adhesive layer disposed on an inner peripheral surface of the base material layer, in which the base material layer contains a polyethylene and an oxidation inhibitor, the adhesive layer contains an ethylene-vinyl acetate copolymer and an oxidation inhibitor, the oxidation induction temperature of the base material layer is 255° C. to 270° C., and the oxidation induction temperature of the adhesive layer is 255° C. or higher.

Abstract: A transparent polyamide resin composition includes a transparent polyamide resin which is a copolymer of an alicyclic diamine and a dicarboxylic acid and which has a refractive index of 1.500 to 1.550, and a transparent crosslinking auxiliary having a refractive index of 1.500 to 1.550, in which the amount of the crosslinking auxiliary added is 13 to 26 parts by mass relative to 100 parts by mass of the transparent polyamide resin, and the crosslinking auxiliary is dispersed, as phases with a diameter of 350 nm or less, in the transparent polyamide resin. A crosslinked transparent polyamide resin molded body is obtained by molding the transparent polyamide resin composition and crosslinking the transparent polyamide resin.

Abstract: A transparent polyamide resin composition includes a transparent polyamide resin which is a copolymer of an alicyclic diamine and a dicarboxylic acid and which has a refractive index of 1.500 to 1.550, and a transparent crosslinking auxiliary having a refractive index of 1.500 to 1.550, in which the amount of the crosslinking auxiliary added is 13 to 26 parts by mass relative to 100 parts by mass of the transparent polyamide resin, and the crosslinking auxiliary is dispersed, as phases with a diameter of 350 nm or less, in the transparent polyamide resin. A crosslinked transparent polyamide resin molded body is obtained by molding the transparent polyamide resin composition and crosslinking the transparent polyamide resin.

Abstract: It is an object of the present invention to provide a multilayered heat-recoverable article in which the occurrence of bloom and bleeding is small, which has excellent resistance to copper-induced damage, and which is easy to produce; and a wire splice and a wire harness each including the multilayered heat-recoverable article. A multilayered heat-recoverable article according to the present invention includes a cylindrical base material layer and an adhesive layer disposed on an inner peripheral surface of the base material layer, in which the base material layer contains a polyethylene and an oxidation inhibitor, the adhesive layer contains an ethylene-vinyl acetate copolymer and an oxidation inhibitor, the oxidation induction temperature of the base material layer is 255° C. to 270° C., and the oxidation induction temperature of the adhesive layer is 255° C. or higher.