Fact Sheet L-XS 23
DISPERBYK-2155
100% High Solids Wetting and Dispersing Additive
Environmental concerns lead to
modified coating formulations,
and in the recent past there is a
growing demand for high solids
systems. This technology calls for
additives with high solids content.
outstanding deflocculation and
stabilization but avoids the usual
drawbacks. DISPERBYK-2155 is
entirely flowable, storage stable and
covers a wide compatibility range.
Often, these additives suffer from
poor flowability, in particular if they
have a higher molecular weight.
Bringing the opposites in line,
BYK developed a high molecular,
100% solids additive that provides
DISPERBYK-2155: Spherical Structure Generates Flowable High Molecular Weight Polymer
Conventional linear structure:
MW: 20.000 g/mol
Solids content: 100%
Viscosity: Not flowable
DISPERBYK-2155 spherical structure:
MW: 20.000 g/mol
Solids content: 100%
Viscosity: 13.000 mPa·s
figure 1
Your benefits
• 100% solids
• Flowability and high molecular weight
at the same time
• Good millbase viscosity reduction
• Excellent deflocculation/stabilization
of pigments
• No yellowing in baking systems
• No impact on drying time of 2-pack
systems
• Storage stable, even at low temperatures (< 0 °C / 32 °F)
• Wide compatibility
Compatibility in Various Resin Systems
System
Alkyd long oil
Alkyd medium oil
Alkyd short oil
Polyester
DISPERBYK-2155
X
X
X
X
Viscosity increase
Acrylate/NCO
Acrylate/Melamine
TPA
NC Combi
X
X
X
X
Color shift
Epoxy
X
Dosage: 5% additive on resin solids
figure 2
Fact Sheet L-XS 23
High Transparency in Coatings
Pigments: Heliogen Green* L 8730; Heliogen Blue* L 6975
figure 3
Additive dosage: 25% on solid pigment
Viscosity [Pa·s]
Excellent Viscosity Reduction
150
100
50
0
0.1
1
Pigment: Heliogen Green* L 9361 PG 36
X Standard Additive
X DISPERBYK-2155
10
100
Shear rate [s-1]
figure 4
*Heliogen is a registered trademark of BASF
info@byk.com
www.byk.com/additives
ANTI-TERRA®, BYK®, BYK®-DYNWET®, BYK®-SILCLEAN®, BYKANOL®, BYKETOL®, BYKOPLAST®, BYKUMEN®, DISPERBYK®,
DISPERPLAST®, LACTIMON®, NANOBYK®, SILBYK®, and VISCOBYK® are registered trademarks of BYK-Chemie.
AQUACER®, AQUAFLOUR®, AQUAMAT®, CERACOL®, CERAFAK®, CERAFLOUR®, CERAMAT®, CERATIX®, and MINERPOL®
are registered trademarks of BYK-Cera.
This information is given to the best of our knowledge. Because of the multitude of formulations, production, and application
conditions, all the above-mentioned statements have to be adjusted to the circumstances of the processor. No liabilities,
including those for patent rights, can be derived from this fact for individual cases.
This brochure replaces all previous issues – printed in Germany.
07/2008
BYK-Chemie GmbH
P.O. Box 10 02 45
46462 Wesel
Germany
Tel +49 281 670-0
Fax +49 281 65735