Clariant Masterbatches has grown its lineup of environmentally friendly additive masterbatches.
The new products, branded Cesa-natur, include masterbatches for slip/anti-block agents, ultraviolet and light stabilizers, antioxidants and anti-static agents. They are blended into a biopolymer carrier resin and feature naturally occurring substances that are renewable, biodegradable and, in most cases, compostable, according to Clariant of Muttenz, Switzerland.
Cesa-natur products can be blended with biopolymers and in conventional synthetic resins. The slip-additive version performs well in polylactic acid film applications, the firm said. UV-protection masterbatches also shield package contents from light and contain naturally occurring aromatic molecules.
Also new is Cesa-extend. When added to biopolymers, the masterbatch addresses their tendency to degrade during processing.
Cesa-extend can improve melt strength of PLA for more reliable sheet extrusion and better bubble formation and stability in blown film systems. When added to PLA containing Hydrocerol chemical foaming agent, Cesa-extend enhances molecular weight and melt strength for a more easily controllable foaming process, the company said.
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