| 摘要 |
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 C 4 olefin and an ±,²-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 C 4 olefin and an ±,²-unsaturated dicarboxylic anhydride or a derivative thereof is an alternating copolymer composed of the C 4 olefin and the ±,²-unsaturated dicarboxylic anhydride or the derivative thereof
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