In response to growing demand from the electrical, IT and domestic appliance industries for fire-retardant thermoplastics that can be processed into transparently or translucently pigmented components with complex, finely structured geometries, Bayer MaterialScience AG has introduced four new grades of fire-retardant polycarbonates (PC). Makrolon® 2467 and 6357 are non-reinforced, extremely flowable, transparent/translucent product grades, Makrolon® 6267 is a non-reinforced, easy-flowing, opaque material, and Makrolon® 9417 is a polycarbonate reinforced with ten percent glass fibers. The flame retardance packages of all the new PC grades are free of antimony, chlorine and bromine. They therefore comply with the two new EU directives on the disposal of plastics from electrical and electronic equipment, the WEEE (Waste Electrical and Electronic Equipment) and the RoHS (Restriction of the Use of Hazardous Substances in Electrical and Electronic Equipment). What is more, they fulfill the criteria of major ecolabels such as "TCO 05" and the "Blue Angel".
These grades offer features such as high heat resistance, making them apt for potential applications include housing components for television sets, monitors, notebooks, electrical devices, plugs, edge connectors, electrical distributors and fuse boxes. All the new PC grades are UV-stabilized and can also be used in outdoor applications.
Despite their flame retardance packages, grades such as Makrolon® 2467 and 6267 are as free-flowing as the standard injection molding type Makrolon® 2405, which is not flame-retardant.
11-Dec-06 
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