PolymersNet and Cyclics Commercialize High Flow Polycarbonate Blend
Melt Flow Improvement Opens Portable Memory Market to Polycarbonate
PolymersNet Co. Ltd. and Cyclics Corporation announced the first commercial application of CBT(r) resin modified polycarbonate (PC). CBT resin has been demonstrated as an additive to improve the molding properties of polycarbonate. PC resin, with a worldwide capacity of over 5 billion pounds, is well known as a molding resin for everything from compact disks to a variety of automotive applications. Although PC exhibits a high level of toughness, it can be difficult to mold into very large or very thin walled parts due to its high melt viscosity and limited melt flow. Under most conditions, adding small amounts of CBT resin to PC increases the melt flow 30-50%, or more, while maintaining good mechanical properties.
PolymersNet has now commercialized a high flow PC containing CBT resin in a portable digital memory card application that was formerly made in high heat ABS resin. A Korean electronics manufacturer chose the modified PC because of its impact and heat resistance as well as its ease in accepting pigments. While standard PC is known for these properties, the PolymersNet product also possesses the superior melt flow required to mold a part that is only 0.2 mm thick.
In addition to this commercialized application, CBT resin is currently under evaluation as an additive by PC manufacturers along with selected compounders and molders. Targeted applications include mobile phone interior and exterior components. Adding CBT resin also brings advantages in better dispersion of pigments, additives and reinforcements.
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