Additive

TEGO® Dispers 745 W

Name: TEGO® Dispers 745 W - Sample
Brand: Evonik
Availability: Discontinued

TEGO® Dispers 745 W is a polymeric wetting and dispersing additive for waterborne formulations. Stabilizes organic and inorganic pigments and carbon blacks in industrial and transportation coatings. Shows excellent colr strength development even with critical organic pigments.

This product is currently not actively marketed on COATINO®. The product's data, including data sheets, may be out-of-date.

Bottle representation of TEGO® Dispers 745 W

PNG

Product information

Type

Additive

Sub type

Pigment wetting & dispersing

Sustainability

VOC reduction

Next generation solution

Markets

Technologies

Waterborne

Manufacturer

Availability

Country

Key benefits

minimal impact on coating properties
stabilization of critical organic pigments

Technical data

Property	Value
acid value (as supplied)	Approx 10 mg KOH/g
active matter content	approx. 40
appearance	yellowish, clear to slightly hazy liquid (product properties are not affected by haziness)
chemical description	solution of an organo-modified polyacrylate with groups of high pigment affinity
pH-value	approx. 8.5
solvent	water / dipropylene glycol monomethylether / propylene glycol-n-butylether 30 : 4 : 1

acid value (as supplied)

Approx 10 mg KOH/g

active matter content

approx. 40

appearance

yellowish, clear to slightly hazy liquid (product properties are not affected by haziness)

chemical description

solution of an organo-modified polyacrylate with groups of high pigment affinity

pH-value

approx. 8.5

solvent

water / dipropylene glycol monomethylether / propylene glycol-n-butylether 30 : 4 : 1

Properties

Viscosity reduction with organic pigments/carbon blacks

4/5

Color intensity/gloss with organic pigments/carbon blacks

5/5

Viscosity reduction with inorganic pigments/fillers

4/5

Color intensity/gloss with inorganic pigments/fillers

5/5

Recommended addition level

As supplied calculated on inorganic pigment: 4.0 - 35.0 %.

As supplied calculated on organic pigment: 20.0 - 8.0 %.

As supplied calculated on carbon black: 40.0 - 150.0 %.

Recommended addition level for co-grind: 0.3 - 2.0 %.

Processing instructions

Starting point formulations for the production of pigment concentrates are available on request.

In case of foam build up during pigment dispersion use a highly effective but also compatible defoamer concentrate (e.g. TEGO® Foamex 8050, TEGO® Foamex 810, TEGO® Foamex 830).

For the production of carbon black concentrates add a small amount of amine (0.2-3.0 %) to neutralize the partially acidic pigment surface.

For inorganic pigment concentrates the addition of the rheology modifiers (e.g. fumed silica) has proven to be beneficial.

Add to the grind before dispersion.