BYK-1796 is a silicone-containing defoamer for solvent-borne, high-solid, and solvent-free applications. It is particularly suitable for 100% two-component systems and provides extremely high defoaming action.

Chemical Family: Polysiloxanes

Compatible Polymers & Resins: Epoxies (EP), Polyurethanes (PU)

End Uses: 2K (2 Component) Adhesive, 2K (2 Component) Sealant, 2K (2 component) Coating, Cast Resin, Epoxy Adhesive, Polyurethane Adhesives, Polyurethanes, Protective Coatings, Solventborne Coating, Solventless & High Solids Coating, Wood Coating

Enhanced TDS

Identification & Functionality

Chemical Family
Manufactured By
CASE Ingredients Functions
Plastics & Elastomers Functions
Technologies
Product Families

Features & Benefits

CASE Ingredients Features
Industrial Additives Features

Applications & Uses

Markets
Applications
Applicable Processes
Application Area
Compatible Polymers & Resins
Compatible Substrates & Surfaces
Adhesive & Sealant End Applications
Coating End Applications
Plastics & Elastomers End Uses
Use Level
0.1 - 1% (Coatings Industry), 0.1 - 1% (Thermosets), 0.1 - 1.5% (Adhesives and Sealants)
Application Information

Coatings industry
Special features and benefits

BYK-1796 is an outstanding silicone defoamer that is especially suitable for 100% 2-component systems. The additive displays very good defoaming and is effective against both macro and microfoam. Even in low doses, BYK-1796 has very powerful defoaming properties, which makes it particularly recommended for highly viscous systems that have a certain tendency towards foam stabilization. Furthermore, the additive is characterized by being very effective in high-solid and solvent-free systems based on epoxy and polyurethane resins, as they are used in floor coatings or protective coatings.

Recommended levels
0.1–1% additive (as supplied) based on the total formulation.
The above recommended levels can be used for orientation. The optimum dosage should be determined by application-related test series.
Incorporation and processing instructions
To achieve optimal defoaming, BYK-1796 should be added as early as the millbase stage. If incorporating at a later stage, sufficiently high shear forces must be applied to ensure a good distribution of the defoamer and to prevent cratering.
Special note
Due to the strong defoaming power of BYK-1796, it is therefore recommended to check the intercoat adhesion and recoatability when it is used in multi-layer systems.

 

Adhesives and sealants
Special features and benefits

BYK-1796 is a silicone defoamer for 100 % 2-component epoxy and polyurethane systems. The additive displays very efficient defoaming of both macro and microfoam. Even in low doses, BYK-1796 has very powerful defoaming properties. The additive is therefore particularly recommended for highly viscous systems that have a certain tendency towards foam stabilization.

Recommended levels
0.1–1.5% additive (as supplied) based on the total formulation.
The above recommended levels can be used for orientation. The optimum dosage should be determined by application-related test series.
Incorporation and processing instructions
Stir in the resin before adding other components.

 

Thermosets
Special features and benefits

BYK-1796 displays an outstanding efficiency when releasing air from all epoxy resin systems such as cast resins, infusion or winding systems. Furthermore, it has very good degassing properties in polyurethane systems, like, for example, transparent gel coats. The use of BYK-1796 shortens the evacuation time in the production process or the degassing times in the application, and it produces a more high-quality product.

Recommended levels
0.1–1% additive (as supplied) based on the total formulation.
The above recommended levels can be used for orientation. The optimum dosage should be determined by application-related test series.
Incorporation and processing instructions
To achieve an optimum degassing, BYK-1796 should be added to the epoxy resin already at the start of the production. If incorporating at a later stage, sufficiently high shear forces must be applied to ensure a good distribution of the air release agent, and to prevent surface defects.

Properties

Physical Form
Typical Properties
ValueUnitsTest Method / Conditions
Density (at 20°C)1g/ml-
Active Substance100%-
Flash Pointmin. 100°C-
SDS Physical and Chemical Properties
ValueUnitsTest Method / Conditions
Auto Ignition Tempertauremin. 200°CDIN 51794
Boiling Pointca. 130°CDerived
Flash Point134°CPensky-Martens
Melting Pointmax. 0°CDerived
Density (at 20°C)1.002g/cm³Deaerated oscillating U-tube
Vapour Pressure (at 20°C)max. 1hPaDerived
AppearanceLiquid--
ColorLight yellow--
Flammability (liquids)Sustains Combustion--
Insoluble inWater--
pH (at 20°C, Concentration: 1%)7-Universal pH-Value Indicator
Composition

Blend of polyether-modified polysiloxanes with hydrophobic particles

Regulatory & Compliance

OEM Specifications

Storage & Handling

Storage Conditions

Mix well before use