Thermoplastic resin composition and resin molded product

Abstract

The present invention relates to a thermoplastic resin composition comprising an aromatic polycarbonate resin (component A) [which may comprise an aromatic polycarbonate resin (component A1) and a thermoplastic resin other than the aromatic polycarbonate resin (component A2)], a granular talc (component B) having a bulk density of 0.4 to 1.5 g/mL which is obtained by granulating a talc having an average particle size of 0.1 to 10 μm, a rubber polymer (component C; optional component), a flame retardant (component E; optional component) and a fluorinated polyolefin (component F; optional component), wherein the granular talc (component B) has a particle size in which a proportion of a 500 μm-mesh screen residue thereof is not less than 55% by weight; as well as a resin molded product obtained by molding the thermoplastic resin composition. The thermoplastic resin composition and the resin molded product are excellent in extrusion moldability, rigidity, flame retardant, impact resistance and thermal stability, and exhibit an excellent balance between these properties.

1 . A thermoplastic resin composition comprising:
 40 to 99 parts by weight of a resin component (component A) comprising 10 to 90% by weight of an aromatic polycarbonate resin (component A1) and 90 to 10% by weight of a thermoplastic resin other than the aromatic polycarbonate resin (component A2) with the proviso that a total content of the components A1 and A2 is 100% by weight; 1 to 60 parts by weight of a granular talc (component B) having a bulk density of 0.4 to 1.5 g/mL which is obtained by granulating a talc having an average particle size of 0.1 to 10 pm; and 0 to 35 parts by weight of a rubber polymer (component C), the granular talc (component B) having a particle size in which a proportion of a 500 pm-mesh screen residue thereof is not less than 55% by weight.   
   
   
       2 . A thermoplastic resin composition according to  claim 1 , wherein the granular talc (component B) is a granulated product obtained by using a binder. 
   
   
       3 . A thermoplastic resin composition according to  claim 2 , wherein a content of the binder in the granular talc (component B) is 0.01 to 5% by weight. 
   
   
       4 . A thermoplastic resin composition according to  claim 2 , wherein the binder contained in the granular talc (component B) is a water-soluble polymer. 
   
   
       5 . A thermoplastic resin composition according to  claim 1 , wherein the granular talc (component B) has a particle size in which a proportion of a 500 pm-mesh screen residue thereof is not less than 75% by weight. 
   
   
       6 . A thermoplastic resin composition according to  claim 1 , wherein the component A2 is a thermoplastic polyester resin. 
   
   
       7 . A thermoplastic resin composition according to  claim 6 , wherein the resin component (component A) comprises 50 to 85% by weight of the aromatic polycarbonate resin (component A1) and 50 to 15% by weight of the thermoplastic polyester resin (component A2) with the proviso that a total content or the components A1 and A2 is 100% by weight. 
   
   
       8 . A thermoplastic resin composition according to  claim 7 , wherein the component A2 comprises at least 10 parts by weight of a polyethylene terephthalate resin on the basis of 100 parts by weight of the component A2. 
   
   
       9 . A thermoplastic resin composition according  claim 1 , wherein a content of the rubber polymer (component C) in the composition is 1 to 30 parts by weight on the basis of 100 parts by weight of a total amount of the components A, B and C. 
   
   
       10 . A thermoplastic resin composition according to  claim 1 , wherein the rubber polymer (component C) is a core/shell-type graft copolymer. 
   
   
       11 . A thermoplastic resin composition according to  claim 1 , further comprising a phosphorus-based compound (component D) in an amount of 0.005 to 1 part by weight on the basis of 100 parts by weight of a total amount of the components A, B and C. 
   
   
       12 . A resin molded product produced by molding the thermoplastic resin composition as defined in  claim 1 . 
   
   
       13 . A thermoplastic resin composition comprising: 40 to 99 parts by weight of an aromatic polycarbonate resin (component A); 1 to 60 parts by weight of a granular talc (component B) having a bulk density of 0.4 to 1.5 g/mL which is obtained by granulating a talc having an average particle size of 0.1 to 10 pm; and a rubber polymer (component C) in an amount of 3 to 35 parts by weight on the basis of 100 parts by weight of a total amount of the components A and B, the granular talc (component B) having a particle size in which a proportion of a 500 pm-mesh screen residue thereof is not less than 55% by weight. 
   
   
       14 . A thermoplastic resin composition according to  claim 13 , wherein the granular talc (component B) is a granulated product obtained by using a binder. 
   
   
       15 . A thermoplastic resin composition according to  claim 14 , wherein a content of the binder in the granular talc (component B) is 0.01 to 5% by weight. 
   
   
       16 . A thermoplastic resin composition according to  claim 14  wherein the binder contained in the granular talc (component B) is a water-soluble polymer. 
   
   
       17 . A thermoplastic resin composition according to  claim 13 , wherein the granular talc (component B) has a particle size in which a proportion of a 500 pm-mesh screen residue thereof is not less than 75% by weight. 
   
   
       18 . A thermoplastic resin composition according to  claim 13 , wherein a content of the rubber polymer (component C) in the resin composition is 5 to 25 parts by weight on the basis of 100 parts by weight of a total amount of the components A and B. 
   
   
       19 . A thermoplastic resin composition according to  claim 13 , wherein the rubber polymer (component C) is a core/shell-type graft copolymer. 
   
   
       20 . A resin molded product produced by molding the thermoplastic resin composition as defined in  claim 13 . 
   
   
       21 . A thermoplastic resin composition comprising: 40 to 99 parts by weight of a resin component (component A) comprising 50 to 100% by weight of an aromatic polycarbonate resin (component A1) and 50 to 0% by weight of a thermoplastic resin other than the aromatic polycarbonate resin (component A2) with the proviso that a total content or the components A1 and A2 is 100% by weight; 1 to 60 parts by weight of a granular talc (component B) having a bulk density of 0.4 to 1.5 g/mL which is obtained by granulating a talc having an average particle size of 0.1 to 10 pm; and at least one flame retardant (component B) selected from the group consisting of an organic alkali metal salt and/or an organic alkali earth metal salt (component E1), an organophosphorus-based flame retardant (component E2) and a silicone-based resin (component E3); and a fluorinated polyolefin (component F), said components E and F being present in amounts of 0.01 to 40 parts by weight and 0.01 to 5 parts by weight, respectively, on the basis of 100 parts by weight of a total amount of the components A and B, the granular talc (component B) having a particle size in which a proportion of a 500 pm-mesh screen residue thereof is not less than 55% by weight. 
   
   
       22 . A thermoplastic resin composition according to  claim 21 , wherein the granular talc (component B) is a granulated product obtained by using a binder. 
   
   
       23 . A thermoplastic resin composition according to  claim 22 , wherein a content of the binder in the granular talc (component B) is 0.01 to 5% by weight. 
   
   
       24 . A thermoplastic resin composition according to  claim 22 , wherein the binder contained in the granular talc (component B) is a water-soluble polymer. 
   
   
       25 . A thermoplastic resin composition according  claim 21 , wherein the granular talc (component B) has a particle size in which a proportion of a 500 rim-mesh screen residue thereof is not less than 75% by weight. 
   
   
       26 . A thermoplastic resin composition according to  claim 21 , wherein the component A2 is a styrene-based resin. 
   
   
       27 . A thermoplastic resin composition according to  claim 21 , further comprising a rubber polymer (component C) in an amount of to 1 to 30 parts by weight on the basis of 100 parts by weight of a total amount of the components A and B. 
   
   
       28 . A thermoplastic resin composition according to  claim 27 , wherein the rubber polymer (component C) is a core/shell type graft copolymer. 
   
   
       29 . A resin molded product produced by molding the thermoplastic resin composition as defined in  claim 21 .