A new series of PC/PBT and PC/PET alloys combines a nanofibrillated thermoplastic network and patent-pending mineral filler technology to produce an unusual balance of stiffness and ductility.

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A new series of PC/PBT and PC/PET alloys combines a nanofibrillated thermoplastic network and patent-pending mineral filler technology to produce an unusual balance of stiffness and ductility. New Xenoy HMD (high-modulus, ductile) resins have just been launched by SABIC Innovative Plastics, Pittsfield, Mass. So far, the company reveals only that the nano-fibrillated thermoplastic network is generated during compounding of the blend. The initial slate includes six grades with tensile moduli from 420,000 to 667,000 psi and flexural moduli from 391,000 to 616,000 psi. Three grades have notched Izod impact values of 11.2 to 14 ft-lb/in. at 73 F and 2.2 to 2.8 at -22 F. The one PC/PET grade has the highest modulus and HDT (235 F @ 264 psi) but the lowest impact. There is also an “IQ” grade, which utilizes SABIC’s technology for making PBT from recycled post-consumer PET. Other advantages claimed for these resins include good chemical resistance, low CTE (down to 4.5, vs. 8 for existing Xenoy grades), excellent fatigue resistance, low creep, around 15° F higher HDT than unfilled Xenoy, good surface appearance, improved hydrolytic stability, and good weatherability and color retention. (For complete properties, visit www.ptonline.com/plaspec.) Xenoy HMD can be injection molded, blow molded, extruded into profiles and sheet, and thermoformed. Potential applications include power-tool housings, energy absorbers, door handles, fuel-tank flaps, equipment enclosures, sports and safety equipment, and several others in markets like building/construction, automotive, heavy trucks, defense, industrial, and portable electronics. For example, injection molded X4820 resin is used for the thinner, more rigid housing of the new “Compact” power tools from Dewalt Industrial Tool Co., Baltimore (photo). The company is developing a flame-retardant version that achieves UL 94V-0 at 1.5 mm and potentially down to 0.8 mm, as well as a high-flow resin for thin-wall applications. (800) 845-0600 • www.sabic-ip.com

Sabic Innovative Plastics
One Plastics Ave. Pittsfield, MA 01201
Phone (413) 448-7110 Fax (413) 448-5214