IMPACT MODIFIERS | ADDITIVES


moderate addition of Elastron TPE impact modi- fiers in recycled PP and recycled HIPS,” he says (see Table 1 and 2).


Low addition grades Styrenic-based copolymers from Kraton are often used to modify impact strength in moulded PP automotive parts, shipping totes and food storage containers. The company says its polymers are stronger than other olefinic elastomers, due to their phase separation morphology, and claims this means they are effective at lower addition rates – typically 3-10%. Kraton MD1648, a styrene-ethylene-butylene-


styrene (SEBS) polymer, is the company’s latest modifier for high melt flow PP. It is said to “deliver an enhanced flow capability never before seen in the styrenic block copolymer industry.” The company claims the grade offers the highest melt flow and lowest viscosity in its portfolio. “The very high melt flow makes [MD1648] easy


to apply, mould, cast or process with low residual stress while using processes specifically requiring low viscosity,” Kraton says. In compounding applications, this low viscosity pays off in reduced


energy consumption, the ability to mould parts at reduced injection pressures, and the potential to achieve lower cycle times. Low viscosity also enables significant dispersion


improvements, according to Kraton. “This minimis- es agglomeration of additives and pigments, which can improve capabilities to achieve bright or dark colours,” says the company. Milliken’s DeltaMax performance modifiers are


formulated to raise melt flow while optimising impact properties, which can benefit the quality of


Above: Potential applications for Kraton MD1648 include


nonwovens for filter


components in face masks


INNOVATIVE ADDITIVES


great IDEAS are born he re !


Turn Your Concept Into Reality.


Struktol Company of America has built its reputation by developing unique, dynamic Intelligent Additive Solutions for the global plastics industry. Our additives keep you on the forefront of processing and functional performance technology – helping you maintain your competitive edge. Contact us and we can help you develop ideas to meet the evolving challenges and demands of your customers.


Learn more at 4struktol.com or email plastics@struktol.com


IMAGE: KRATON


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