Patent ID: 8324296

Claim:
A flame-retardant synthetic resin composition, containing no halogen compound and comprising components (A), (B) and (C) together with a synthetic resin selected from the following synthetic resins: α-olefin polymers or copolymers thereof; petroleum resin; coumarone resin; polystyrene; polyvinyl acetate; acrylic resin; copolymers of styrene and/or α-methylstyrene with other monomers; polyamides; thermoplastic polycarbonate, polycarbonate/ABS resin, branched polycarbonate, polyacetal, polyphenylene sulfide, polyurethane or cellulose resins; isoprene rubber, butadiene rubber, acrylonitrile-butadiene copolymer rubber or styrene-butadiene copolymer rubber elastomers; or mixtures thereof; Component (A): (poly)phosphate compound represented by the following formula (1) Component (B): (poly)phosphate compound represented by the following formula (3) Component (C): layered silicate in an amount effective to achieve an anti-dripping effect wherein n in the formula (1) represents a number of 1-100, X 1 is ammonia or a triazine derivative represented by the following formula (2) and p is a number satisfying the relational expression of 0<p≦n+2; wherein Z 1 and Z 2 in the formula (2) are groups selected independently from a —NR 5 R 6 group, a hydroxyl group, a mercapto group, a straight chain or branched alkyl group having 1-10 carbon atoms, a straight chain or branched alkoxy group having 1-10 carbon atoms, a phenyl group and a vinyl group, and R 5 and R 6 are selected independently from a hydrogen atom, a straight chain or branched alkyl group having 1-6 carbon atoms, or a methylol group; wherein r in the formula (3) represents a number of 1-100, Y 1 is a diamine containing a [R 1 R 2 N(CH 2 )mNR 3 R 4 ] group, piperazine or a diamine containing a piperazine ring, R 1 , R 2 , R 3 and R 4 are independently selected from a hydrogen atom, or a straight chain or branched alkyl group having 1-5 carbon atoms, m is an integer of 1-10, and q is a number satisfying the relational expression of 0<q<r+2; wherein the content of said components (A)-(C), respectively, are 0.1-40 mass parts, 0.1-50 mass parts, and 0.01-15 mass parts relative to 100 mass parts of said synthetic resin; wherein the blending ratio (A)/(B) (mass standard) of said components (A) and (B) is 20/80-50/50; and wherin the flame-retardant synthic resin composition does not contain polylactic acid.