Flame-retardant resin composition

Abstract

To provide a flame-retardant resin composition exhibiting high flame retardance, and excellent char (shell) formation, moldability and mechanical properties, stably without variation. A flame-retardant resin composition comprising an olefin-type resin (A), a modified copolymer (B) obtained by modifying at least partially a copolymer comprising a C4 olefin and an α,β-unsaturated dicarboxylic anhydride or a derivative thereof, by at least one method of the following (b-1) and (b-2), and an inorganic flame retardant (C): (b-1); modification with a compound having a hydroxyl group and/or a compound having an ether group; and (b-2); partial ionomerization with metal ions. Preferred embodiment of the copolymer comprising a C4 olefin and an α,β-unsaturated dicarboxylic anhydride or a derivative thereof is an alternating copolymer composed of the C4 olefin and the α,β-unsaturated dicarboxylic anhydride or the derivative thereof

Dependencies are inferred from the claim text.