Bermocoll by Nouryon Cellulose ether is a new type of hydrophobically modified cellulose ether for use as a rheology modifier in decorative all-acrylic latex paints.
$0.00Market: Exterior Paint, Interior Paint
Product Type: Additive
Features and Benefits:
- A Life-Cycle Analysis (LCA) determined the carbon footprint of the Bermocoll FLOW thickener system is 40 % lower compared to a synthetic HEUR thickener system.
- Exceptional flow which can replace associative synthetic thickeners (e.g.
- Can reduce cost and formulation complexity
- Performs distinctly well in all-acrylic formulations for interior and exterior use
- Especially suited for low-VOC formulations and airless spray applications
Rheology explains Exceptional Flow Performance
As shown by its rheology profile graph below, Bermocoll FLOW’s low shear viscosity is higher than for HEUR, offering an improved sag to leveling balance. Compared to HM-CE, the low shear viscosity is reduced, offering excellent leveling. At high shear rates, Bermocoll FLOW has a higher viscosity than HM-CE which gives improved hiding power.
Stability Data for Storage and Tinter Addition
After 4 weeks of storage at 50 ̊C/120F, the syneresis of the paint thickened with Bermocoll FLOW is on par with the paints containing HM-CE or HM-CE/HEUR and much improved compared to the HEUR thickened paint. Upon addition of tinter, the Bermocoll FLOW paint shows the same viscosity drop as the HM-CE/HEUR containing paint and clearly less than the pure HEUR paint.
Case Study: Airless Spray Application
The exterior flat paint was tested in an airless spray study including two commercial alterna- tives and showed excellent ease of atomization and back rolling. Scores were high or excellent for flow and leveling, gloss difference and touch up properties (airless spray/back rolling), visible spray lines and sag lines. The interior flat paint performed equally well.
|Particle Size||≤ 500 µm|
|Salt Content||≤ 4.5 %|
|Water Content||≤ 4 %|
|pH, 1% solution||4-7|
|Viscosity at 20 °C (Brookfield LV), 2% solution||500 – 1500 mPa.s|