Application Insight / Masterbatch · 7 min read

Pigment dispersion in masterbatch: wax, lubricant and torque

Agglomerates, uneven coverage and high torque: diagnosis with PE wax, dispersing lubricant and pigment choice.

Bad color is almost always dispersion

Before blaming the pigment, check agglomerates, addition order, vehicle viscosity and whether lubrication is helping or hurting shear.

Package tools

Micronized PE wax and dispersing lubricant act on different axes: flow/finish vs breaking agglomerates. Parallel trials on the same masterbatch avoid random SKU swaps.

▸Log torque and filter/pressure.
▸Compare pigment with and without dispersant.
▸Tune wax only after dispersion stabilizes.

Plectus sample

Request pigment and dispersing-lubricant samples in the same process context. Masterbatch and pigmentation landings detail the application.