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products | Polymers and additives FUNCTIONAL FILLERS


Modified mineral filler can raise thermal performance


The latest additions to the functional filler product line from Quarzwerke subsidiary Mineral Engineers allow users to modify thermal conductivity and optical performance. The company has


developed a range of modified mineral fillers based on a naturally-occur- ring alumina-silicate designed to impart thermal conductivity in polymer compounds when used at moderate to high volume fractions. The mineral filler is processed to particle sizes between 5 and 30 microns, then coated using a special surface treatment. Mineral Engineers says


the new fillers are likely to find applications in the electronics sector where increasing energy density requires more effective heat dissipation without sacrific-


PVC PLASTICIZERS PolyOne lifts bio-content for reFlex 300


Target applications for reFlex 300 include healthcare tubing


PolyOne has introduced reFlex 300, a 99% bio-based plasti- cizer that is claimed to provide a one-for-one replacement for general purpose phthalate plasticizers in flexible PVC applications. It is the second product in


the company’s newly-intro- duced reFlex range, which is the result of a development alliance between PolyOne and agricultural products group


58 COMPOUNDING WORLD | December 2012


Archer Daniels Midland (ADM). The new grade is certified 99% bio-based under the USDA BioPreferred pro- gramme. It is said to be suitable for a range of applications, including healthcare tubing and connectors, electrical plugs and insulators, gaskets, seals, flooring and toys. “We continue to see increased marketplace


demand for renewable technology for plasticizers,” according to Rob Rosenau, president of PolyOne Performance Products and Solutions. “Our reFlex 300 bioplasti- cizer enables customers to expand their offerings with differentiated alternatives that heed consumer calls for eco-conscious solutions.” ❙ www.polyone.com


www.compoundingworld.com


A new thermally conductive filler from Mineral Engineers can assist heat dissipation in electronic devices


ing electrical insulation. It says the fillers are engineered to minimise any negative impact on both mechanical perfor- mance and processing and it is applying for patents on the new materials. Also new from the company


is Silglow, a modified fused silica that is anorganically treated to provide glow-in-the- dark performance. According to the company, the materials are charged when exposed to natural daylight or artificial


illumination and release a strong glow in darkness. Silglow fillers provide a


luminance of more than 20 mcd/m2


after 60 minutes,


making them suitable for applications such as road markings, warning signs and guide lighting. The materials are characterised by a density of 2.2 g/cm3


,


hardness of 6.5 mohs and are available in grain sizes from 0.1 to 5.0 mm. ❙ www.hpfminerals.com


PVC ADDITIVES


Bio-based modifiers for PVC


Bio-based polymers devel- oper Metabolix has introduced a series of polyhydroxyal- kanoate (PHA) copolymers that it says could be used as modifiers in rigid and flexible PVC formulations. According to the company,


the copolymers can be used as low extractable plasticiz- ers or as processing aids to prevent excessive shear heating. Certain copolymer grades have also been found to act as impact modifiers in transparent formulations. Metabolix worked with AlphaGary to validate the materials. AlphaGary is beginning to test the polymeric PHA modifiers in some current high-value applications. Metabolix hopes to ship


the first production samples early next year. ❙ www.metabolix.com


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