The Competence in Dust Less Blends
The behaviour of some DLB's is sometimes similar to an alloy with respect to its melting point. This effect is also now known for many blends of stabilizers, a feature which gives rise to several clear advantages. For example, additives with relatively high melting points need special care to ensure that they are melted and well dispersed into the polymer. Their combination in an DLB form with additives of lower, more suitable, melting points can result in a reduction in the melting point of the final blend. This can open up new application opportunities for additives which were previously excluded due to their melting point being incampatible with the processing conditions for the polymer.
It is typical that when such an 'alloy' effect is observed, no changes in the DLB composition, nor any chemical reactions between the components have occurred (confirmed by HPLC analysis). The benefits of such a reduction in melting point will manifest themselves as improved melting rate and ease of dispersion into the polymer with a wide range of productivity benefits.
In some cases the production of an DLB can result in a technical performance enhancement. Such a performance enhancement can lead to a reduction in the level of additives, hence cost reduction, needed to achieve the desired technical performance.