Styrenics
Kraton’s styrene end block products provide good compatibility with crystal polystyrene and high impact polystyrene (HIPS), making them good impact modifiers.
For clear applications such as sheet for thermoforming, Kraton® D1403, D1431, and MD6459 products are recommended. To increase the impact further, a lower styrene polymer such as D1155 may be added as well at a lower loading. For clear injection molding applications, D1403 or D1431 are suggested.
For opaque applications, Kraton D1101, D1102, or D1184 products may be used. D1184 is the most effective grade; however since it has the highest molecular weight; it is the most difficult to process. D1102 has the lowest molecular weight; therefore it is the easiest to process and is often used when only mild shear rate compounding equipment (e.g. single screw) is available.
