NUCLEATING AGENT

In order to reduce the crystallization temperature as well as energy and production costs.

The properties of films and articles made of semicrystalline polymers like e.g. PP-homo or HDPE, strongly depend on processing parameters. Especially the cooling rate during fime extrusion or injection moulding can change the crystallization speed of such polymers enormously and there for influence the stiffness or clarity of the final article.

Nucleating agents are substances higly effective in reducing the crystallization temperature of these polymers and enabling lower processing temperatures, saving energy and reducing cycle times and production costs.

Depending on their chemistry some nucleating agents are referred to as clarifier. Their main effect is an increase in crystallization homogenity resulting in improved clarity and gloss. For example injection moulded PP-houshold containers and cups are a typical application for nucleating agents used as clarifiers.

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