Flame retardant resin composition without halogen

Abstract

To provide a nonhalogen flame retardant resin composition which exhibits high flame retardance and excels in tensile strength, does not generate a halogen gas on combustion, and excels in safety for the environment. The nonhalogen flame retardant composition comprises (A) 100 pts. mass one or more carboxylic anhydride group-free thermoplastic resins, (B) 0.1-30 pts. mass carboxylic anhydride group-containing resin, (C) 40-300 pts. mass inorganic flame retardant, and (D) 0.1-100 pts. mass organopolysiloxane.

Description

technical field [0001] The present invention relates to a halogen-free flame-retardant resin composition which has high flame retardancy and tensile strength and is excellent in environmental safety because no halogen gas is generated during combustion. Background technique [0002] Since thermoplastic resins are flammable, various techniques for imparting flame retardancy have been proposed in order to be able to adapt to applications requiring flame retardancy. Conventionally, as a technology for imparting flame retardancy, halogen formulations have been widely used, that is, halogen-based flame retardants such as bromine compounds that impart excellent flame retardancy are used, and these are blended with antimony oxide into thermoplastic resins. Halogen-based flame retardants exhibit excellent flame-retardant effects due to the free radical capture function and the generation of incombustible gases. [0003] However, since halogen-based flame retardants generate a large...

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Problems solved by technology

[0007] However, in this improved technique, since the organopolysiloxane is oily or gel-like, the tensile strength of the resin composition decreases in proportion to the compounding amount of the organopolysiloxane, which is a disadvantage.

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