Dispersants
BERCHEM® 4811
(Technical Data) - BERCHEM® 4811 is an effective pigment dispersant based on the chemistry of sodium hexametaphosphate. BERCHEM® 4811 can be used in both calcium carbonate and koalin clay based coating formulations. Several advantages with BERCHEM® 4811 are improved runnability, while significantly lowering the number of scratches, weeping and wiskering at the point of coating application on the paper / paperboard sheet.
BERCHEM® 4830
(Technical Data) - is an economical, clear, 30% solids solution of an alkali soluble acrylic type dispersant recommended for high solids pigmented paper coating formulations.
BERCHEM® 4842
(Technical Data) - BERCHEM® 4842 is a low molecular weight, polyacrylate-based dispersant specially designed for pigmented paper coating formulations. Proper coating dispersion is essential to achieving good coater runnability and can significantly influence issues such as scratching, weeping, and whiskering.