Aromatic polycarbonate composition

Abstract

The present invention relates to a polymer composition containing the following components: a) 30-97 mass % of aromatic polycarbonate, b) 0.5-20 mass % of a metal compound capable of being activated by electromagnetic radiation and thereby forming elemental metal nuclei, and c) 2.5-50 mass % of at least one rubber-like polymer, wherein the sum of a)-c) is 100%.

1 . Polymer composition containing the following components:
 a) 30-97 mass % of aromatic polycarbonate,   b) 0.5-20 mass % of a metal compound capable of being activated by electromagnetic radiation and thereby forming elemental metal nuclei, and   c) 2.5-50 mass % of at least one rubber-like polymer,   
       wherein the sum of a)-c) is 100%. 
     
     
         2 . Polymer composition according to  claim 1 , wherein component b) is a metal oxide having a spinel structure. 
     
     
         3 . Polymer composition according to  claim 1 , wherein component b) is CuCr 2 O 4 . 
     
     
         4 . Polymer composition according to  claim 1 , wherein the composition contains, as rubber like polymer, an elastomeric polymer. 
     
     
         5 . Polymer composition according to  claim 1 , wherein the composition contains, as rubber like polymer, a graft copolymer containing an elastomeric polymer. 
     
     
         6 . Polymer composition according to  claim 5 , wherein the graft copolymer containing an elastomeric polymer is a graft copolymer prepared by polymerizing 5 to 90 parts by weight, based on the graft copolymer, of one or more monomers in the presence of 95 to 10 parts by weight, based on the graft copolymer, of particles of the elastomeric polymer. 
     
     
         7 . Polymer composition according to  claim 1 , wherein the elastomeric polymer is a butadiene based rubber, an acrylate based rubber or a siloxane based rubber. 
     
     
         8 . Polymer composition according to  claim 1 , wherein component c) is a butadiene based rubber, an acrylate based rubber or a siloxane based rubber. 
     
     
         9 . Polymer composition according to  claim 1 , 
       wherein component c) is at least one graft copolymer prepared by polymerizing 5 to 90 parts by weight, based on c), of one or more monomers in the presence of 95 to 10 parts by weight, based on c), of particles of an elastomeric polymer. 
     
     
         10 . Polymer composition according to  claim 1 , 
       wherein the composition contains at least acrylonitrile butadiene styrene (ABS) as component c). 
     
     
         11 . Moulded part that contains the polycarbonate composition according to  claim 1 . 
     
     
         12 . A circuit carrier that contains at least a moulded part according to  claim 11 . 
     
     
         13 . A process for producing a circuit carrier according to  claim 12  comprising the steps of providing a moulded part, irradiating areas of said part on which conductive tracks are to be formed with electromagnetic radiation to break down the metal compound b) and releasing metal nuclei, and subsequently metallizing the irradiated areas. 
     
     
         14 . Process for reducing degradation of aromatic polycarbonate in an aromatic polycarbonate composition also containing a metal compound b) capable of being activated by electromagnetic radiation and thereby forming elemental metal nuclei, characterized in that the process further comprises mixing said composition with at least one rubber-like polymer to obtain an aromatic polycarbonate composition with increased melt stability. 
     
     
         15 . Process according to  claim 14 , characterized in that the melt stable aromatic polycarbonate composition contains
 a) 30-97 mass % of aromatic polycarbonate,   b) 0.5-20 mass % of a metal compound capable of being activated by electromagnetic radiation and thereby forming elemental metal nuclei, and   c) 2.5-50 mass % of at least one rubber-like polymer,   
       wherein the sum of a)-c) is 100%. 
     
     
         16 . Process according to  claim 15 , wherein component b) is a metal oxide having a spinel structure. 
     
     
         17 . Process according to  claim 16 , wherein component b) is CuCr 2 O 4 . 
     
     
         18 . Process according to  claim 15 , wherein the rubber-like polymer is acrylonitrile butadiene styrene (ABS) or a siloxane based rubber.