Enhanced TDS
Identification & Functionality
- Chemical Family
- Manufactured By
- CASE Ingredients Functions
- Industrial Additives Functions
- Technologies
- Product Families
Features & Benefits
- CASE Ingredients Features
- Key Features
- DISPERBYK® 160 is the additive with the highest molecular weight in the group of polymeric wetting and dispersing additives for high quality solvent-borne coatings.
- In new paint formulations the usage of DISPERBYK® 160 (which has similar performance but is easier to handle) is recommended instead.
Applications & Uses
- Markets
- Applications
- Compatible Substrates & Surfaces
- Coating End Applications
- Industrial Additives End Use
- Use Level
- 70 - 140% (Carbon Blacks)*, 30 - 90% (Organic Pigments)*, 5 - 6% (Titanium Dioxide)*, 10 - 15% (Inorganic Pigments)*
- Processing Instructions
- Wetting and dispersing additives should be added to the millbase. Only in this way can they achieve their full effectiveness.
- The resin and solvents should be pre-mixed: then the additive added under agitation until uniformly dissolved.
- The pigments should be added following appropriate incorporation of the additive.
- To prevent the formation of seeds during incorporation, before adding DISPERBYK® 160 to the resin, this additive should be diluted to 15% solids by using appropriate solvent(s) from the formula.
- BYK-331 (see data sheet S200) should additionally be used in baking systems to improve leveling and to prevent Bénard cells.
- Product Function
- This high molecular weight additive deflocculates pigments and provides steric stabilization.
- It provides a uniform electrical charge to pigment surfaces thus avoiding possible co-flocculation of pigments that are not equally charged.
- Due to the small particle sizes of the deflocculated pigments, higher gloss and color strength are achieved.
- Additionally, transparency of transparent pigments and hiding power of opaque pigments are increased.
- This product reduces viscosity, subsequently, leveling is improved and higher pigment loading is possible.
Properties
- Appearance
- Free flowing, white powder
- Typical Properties
Value Units Test Method / Conditions Solvents Xylene/Butyl-acetate 6/11 - - Flash Point 77 °F - Non Volatile Matter 29 % - Weight per Gallon (at 68°F) 7.91 lb/gal - Amine Value 12 mg KOH/g - - SDS Physical and Chemical Properties
Value Units Test Method / Conditions Kinematic Viscosity (at 40°C) 330 mm²/s - Ignition Temperature min. 392 °F DIN 51794 Immiscible In Water - - Density (at 68°F) 0.95 g/cc 4 (Oscillating U-tube, at 20°C) Lower Explosion Limit 1 %V - Flash Point 77 °F 48 (Abel-Pensky) Vapor Pressure (at 68°F) 6 hPa Derived Initial Boiling Point 255.2 °F Derived Melting Point min. 59 °F Derived pH Value (at 20°C, 1% Concentration) 6 - Universal pH Value Indicator Odor Aromatic - - Appearance Light Brown - - Upper Explosion Limits 7.6 %V - - Note
*The above recommended use levels are strongly dependent on pigment particle size. Optimal levels may be determined with a ladder series in the laboratory.
- Special Note
- The treatment of some organic pigments can negatively influence the efficiency of this wetting and dispersing additive.
- In such cases, tests with the untreated pigment of the same type may be successful.
- When using these additives in coil coatings, possible interaction with the acid catalyst must be taken into consideration.
- Amine-blocked acids are less suitable than free acids or epoxy-blocked acids.
- These problems can be circumvented by using the DISPERBYK® 160 family (see Data Sheet W201) instead.