| 摘要 |
PURPOSE: A thermoplastic fire retardant resin composition is provided, which is excellent in fire retardance and fire resistance by using SAN copolymer resin containing 5 to 18 wt% of acrylonitrile as a compatibilizer and carboxy phosphinic acid compound and phosphoric ester as a fire retardant in the preparation of fire retardant resin composed of rubber-reinforced SAN copolymer resin and polyphenylene ether. CONSTITUTION: The thermoplastic fire retardant resin composition comprises (A) 40 to 95 wt% of rubber-reinforced SAN copolymer of (a1) 20 to 100 wt% of SAN graft copolymer composed of 10 to 60 wt% of rubber and 90 to 40 wt% of SAN copolymer, and (a2) 80 to 0 wt% of SAN copolymer, in which the contents of acrylonitrile is 18 to 50 wt% in the ingredients excluding rubber; (B) 5 to 60 wt% of polyphenylene ether resin, in which the sum of (A) and (B) is 100; (C) 2 to 30 wt% (based on the total 100 wt% of (A) and (B)) of SAN copolymer having the acrylonitrile contents of 5 to 18 wt%; (D) 0.5 to 20 wt% (based on the total 100 wt% of (A) and (B)) of carboxy phosphinic acid compound represented by formula 1; and (E) 0 to 30 wt% (based on the total 100 wt% of (A) and (B)) of aromatic phosphoric ester compound represented by formula 2. In the formula 1, R1 is hydrogen, a C1-C12 alkyl group or a C6-C15 aryl group, which can be substituted with an alkyl group; and R2 is a C1-C12 alkylene group, a C1-C12 cycloalkylene group or C6-C15 aryl group which can be substituted with an alkyl group and in the formula 2, R3, R4, and R5 are independently a hydrogen or a C1-C4 alkyl group; X is a C6-C20 aryl group which can be substituted alkyl group and is one derived from dialcohols such as resorcinol, hydroquinol, bisphenol-A or bisphenol-S; and m is an integer of 0 to 4. |
