Name: Phosphate Ester Dispersant PE-8
Brand: Coatingsink
SKU: phosphate-ester-dispersant-pe8
Availability: InStock

Question 1

How does PE-8 anchor to metallic and mineral pigment surfaces?

Accepted Answer

The phosphate ester head group forms a strong coordinative bond with metal oxide surfaces (iron oxides, aluminium, zinc) and silicate minerals. This chemisorption prevents desorption during milling and storage, giving superior long-term dispersion stability compared to purely physically adsorbed dispersants.

Question 2

What is the optimal addition method for PE-8 in gravure ink systems?

Accepted Answer

Add PE-8 to the pigment premix before milling at 1–3% on pigment weight. Pre-dissolving in the solvent or resin component ensures even distribution across the pigment surface before bead-mill dispersion. Avoid post-addition to finished grinds as anchoring efficiency is reduced.

Question 3

Is PE-8 compatible with waterborne systems or is it solvent-only?

Accepted Answer

PE-8 is primarily designed for solvent-borne and high-solids coatings. For waterborne systems it can be used at low levels (0.5–1.5% on pigment) when neutralised with amine (e.g. AMP-95 or DMAE), but a dedicated anionic or polymeric dispersant is generally preferred for fully waterborne formulations.

HLB Value	~8
Acid Value	85–105 mg KOH/g
Appearance	Amber viscous liquid
Active Content	≥95%
Viscosity (25°C)	800–1,500 mPa·s

Phosphate Ester Dispersant PE-8

Specifications

FAQ

Interested in Phosphate Ester Dispersant PE-8?