Pigments masterbatches

Candelilla synthetic Rice (Oryza sativa) wax wax, pigment masterbatches Polyethylene wax wax, plastics Poiyethyiene wax wax, polishes... 

Production of colour compound is estimated at 1.5 million tonnes in Europe, mainly for cable and pipe grades and engineering resins. Demand is likely to slow down, in preference to coloured masterbatch. Pigmented masterbatches are used to modify an estimated 53% of polymers processed (and 45% of all performance additives used in Europe are incorporated via masterbatch). Compounder Ampacet estimates that worldwide consumption of masterbatch will reach 2.15 million tonnes in 2001. Film, blow moulding, and injection moulding make up about 70% of consumption. There are around 200 producers of colour masterbatch, the leaders being Cabot, Schulmann. Ampacet, and Ferro. 

The DuPont product is named Viton FreeFlow SC and RC and, unlike earlier types of fluoropolymer additives, they can be mixed into many pigmented masterbatches, with less interaction. The Dyneon grades are marketed as Dynamar PPA. The latest fluorocarbons comply with most world food contact legislation. 

As well as improved output, processors gain extended use of equipment and greater flexibility in speed, temperature, pressure, and gauge control, with a wider choice of blend ratios. There is less downtime for cleaning die apertures and start-up is also easier. The latest types can also be mixed into many pigmented masterbatches with less interaction. 

In cases where elimination of agglomerates is essential to ensure that optimum compound properties are achieved, melt filtration can be used. This is important in pigment masterbatch production or in coloured compounds to be spun into fibres, where agglomerates can lead to fibre breakage. Removal of impurities or large defect particles by melt filtration can also increase the fatigue life of FIDPE pipe and the resistance to breakdown of polymer subjected to an electrical stress [71, 72]. 

Film blowing will show up problems of poor masterbatch distribution even more than blow mouldings and will also show the presence of agglomerates due to substandard pigment dispersion. This technique is sometimes used on a laboratory scale for pigment masterbatch quality control. 

Maddock + long gridded element HMWPE Pigment masterbatch Striations Good results [1]... 

Color concentrates, color pastes, colorants and pigments masterbatches... 

Upon incorporation of a hyperdispersant to a pigment masterbatch, a significant melt viscosity drop... 

---