Flame retardant resin composition

Abstract

To provide a flame retardant resin composition having excellent flame retardancy and excellent resin physical properties.There is provided a flame retardant resin composition, including: an aromatic polycarbonate resin; an inorganic filler; a phosphate ester flame retardant; an organic sulfonic acid flame retardant; a drip preventing agent; and a polyorganosiloxane-containing graft copolymer, in which a content of the aromatic polycarbonate resin is 40 to 95 pts·mass to 5 to 60 pts·mass of the inorganic filler, and a content of the phosphate ester flame retardant, a content of the organic sulfonic acid flame retardant, a content of the drip preventing agent, and a content of the polyorganosiloxane-containing graft copolymer are respectively 1 to 30 pts·mass, 0.01 to 2.5 pts·mass, 0.05 to 1.5 pts·mass, and 0 to 10 pts·mass to the total 100 pts·mass of the aromatic polycarbonate resin and the inorganic filler.

1 . A flame retardant resin composition, comprising:
 an aromatic polycarbonate resin;   an inorganic filler;   a phosphate ester flame retardant;   an organic sulfonic acid flame retardant;   a drip preventing agent; and   a polyorganosiloxane-containing graft copolymer, wherein   a content of the aromatic polycarbonate resin is 40 to 70 pts·mass to 30 to 60 pts·mass of the inorganic filler, and   a content of the phosphate ester flame retardant, a content of the organic sulfonic acid flame retardant, a content of the drip preventing agent, and a content of the polyorganosiloxane-containing graft copolymer are respectively 1 to 30 pts·mass, 0.01 to 2.5 pts·mass, 0.05 to 1.5 pts·mass, and 0 to 10 pts·mass to the total 100 pts·mass of the aromatic polycarbonate resin and the inorganic filler.   
     
     
         2 . The flame retardant resin composition according to  claim 1 , wherein
 the aromatic polycarbonate resin comprises a recovered polycarbonate resin, and   a content of the recovered polycarbonate resin is from 1 to less than 100 mass % to the total mass of the aromatic polycarbonate resin.   
     
     
         3 . The flame retardant resin composition according to  claim 1 , wherein
 the aromatic polycarbonate resin comprises a recovered polycarbonate resin.   
     
     
         4 . The flame retardant resin composition according to  claim 2 , wherein
 the recovered polycarbonate resin comprises at least one substituent selected from the group consisting of a hydroxyl group, a phosphate group, a phosphate base, a sulfonium base, a diazonium base, an iodonium base, and a carboxyl group.   
     
     
         5 . The flame retardant resin composition according to  claim 2 , wherein
 the recovered polycarbonate resin comprises at least one polymer selected from the group consisting of a polyolefin, polypropylene, and polyethylene.   
     
     
         6 . The flame retardant resin composition according to  claim 2 , wherein
 the recovered polycarbonate resin is obtained from at least one object selected from the group consisting of an optical disk, an optical sheet, a headlight, a water bottle, a baby bottle, and a building material sheet.   
     
     
         7 . The flame retardant resin composition according to  claim 2 , wherein
 the recovered polycarbonate resin is obtained from a used optical disk or a waste optical disk to which an attached material is attached, the attached material being selected from the group consisting of a metal layer, a recording material layer, an adhesive layer, a label, and a surface-hardened layer.   
     
     
         8 . The flame retardant resin composition according to  claim 2 , wherein
 the recovered polycarbonate resin is obtained by separating and removing an attached material from a used optical disk or a waste optical disk to which the attached material is attached, the attached material being selected from the group consisting of a metal layer, a recording material layer, an adhesive layer, a label, and a surface-hardened layer.   
     
     
         9 . The flame retardant resin composition according to  claim 1 , wherein
 the inorganic filler includes at least one material selected from the group consisting of glass fiber, a glass powder, mica, talc, and carbon fiber.   
     
     
         10 . The flame retardant resin composition according to  claim 1 , wherein
 the organic sulfonic acid flame retardant comprises an organic sulfonic acid compound having a weight-average molecular weight of not less than 30,000 in terms of polystyrene.   
     
     
         11 . The flame retardant resin composition according to  claim 10 , wherein
 the organic sulfonic acid compound contains 0.1 to 10 mol % of a sulfonic acid group and/or a metal sulfonate group.   
     
     
         12 . The flame retardant resin composition according to  claim 1 , wherein the content of the organic sulfonic acid flame retardant is 0.08 to 1.1 pts·mass. 
     
     
         13 . The flame retardant resin composition according to  claim 1 , wherein the organic sulfonic acid flame retardant comprises a sulfonated aromatic polymer. 
     
     
         14 . The flame retardant resin composition according to  claim 1 , wherein the content of the polyorganosiloxane-containing graft copolymer is 0.5 to 8 pts·mass. 
     
     
         15 . The flame retardant resin composition according to  claim 1 , wherein the aromatic polycarbonate resin comprises a branched aromatic polycarbonate resin. 
     
     
         16 . The flame retardant resin composition according to  claim 15 , wherein an amount of the branched aromatic polycarbonate resin in the aromatic polycarbonate resin is 10 to 100 mass %. 
     
     
         17 . The flame retardant resin composition according to  claim 1 , wherein the aromatic polycarbonate resin comprises an aromatic polycarbonate-polyorganosiloxane copolymer. 
     
     
         18 . A method of producing the flame retardant resin composition of  claim 1 , the method comprising:
 mixing the aromatic polycarbonate resin, inorganic filler, phosphate ester flame retardant, organic sulfonic acid flame retardant, drip preventing agent, and optionally the polyorganosiloxane-containing graft copolymer to provide a mixture; and   melt-kneading the mixture to produce the composition.   
     
     
         19 . A molded article comprising the flame retardant resin composition of  claim 1 . 
     
     
         20 . A method of producing the molded article of  claim 19 , the method comprising molding the flame retardant resin composition to produce the article.