BYK-1798 is a silicone-containing defoamer designed for aqueous and radiation-curable systems. It is effective in both radiation cure and physical hardening applications. The product includes naphtha (petroleum), hydrodesulfurized heavy, 2-ethylhexanol, and ethylene glycol monobutyl ether. It is liquid in form and complies with TSCA (USA) chemical inventories.

Functions: Defoamer

Chemical Family: Polysiloxanes

Enhanced TDS

Identification & Functionality

Chemical Family
Manufactured By
CASE Ingredients Functions
Technologies
Product Families

Applications & Uses

Cure Method
Use Level
0.1 - 0.7% (coatings and printing inks)
Product Application

Coatings and Printing Inks
Special Features and Benefits

BYK-1798 is a very effective silicone defoamer for all water-soluble systems (physically drying and baking systems) and is also recommended for radiation-curable coatings.
Recommended Levels
0.1-0.7% additive (as supplied) based on the total formulation. The above recommended levels can be used for orientation. Optimal levels are determined through a series of
laboratory tests.
Incorporation and Processing Instructions
To ensure the full effect, the defoamer should be added already during the grinding. If post-adding, ensure a sufficiently high shear force in order to distribute the additive well and to prevent cratering.

Properties

Physical Form
Typical Properties
ValueUnitsTest Method / Conditions
Non-Volatile Matter (10 min, at 150°C)10%-
Flash Point53°C-
SolventsButylglycol/ethylhexanol/white spirit 6/2/1--
Density (at 20°C)0.88g/ml-
SDS Physical and Chemical Properties
ValueUnitsTest Method / Conditions
Ignition Temperaturemin. 200°CDIN 51794
Density (at 20°C)0.885g/cc4 (Oscillating U-tube, at 20°C)
Flash Point53°C48 (Abel-Pensky)
Vapor Pressure (at 20°C)max. 1hPaDerived
Initial Boiling Pointapprox. 180°C-
Melting Pointmax. 0°C-
pH Value (at 20°C, 1% Concentration)7-Universal pH-Value Indicator
OdorSolvent-like--
ColorColorless--
Immiscible inWater--
AppearanceLiquid--
Note

The additive contains C6 F13 fluorotelomers. It replaces BYK-020.

Regulatory & Compliance

Chemical Inventories