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ADD-2021 is a silicone-free defoamer with leveling properties for various solvent-based resin systems. ADD-2021 functions well during the application of paints and lacquers, and also prevents the entrapment of air during processing steps such as stirring and pumping. ADD-2021 can be used in coatings and printing inks.

Functions: Defoamer

End Uses: Flexography Ink, Gravure Ink, Radiation Curable Ink, Screen Printing Ink, Solventborne Coating, Solventborne Ink, Varnishes

Compatible Polymers & Resins: Acrylics, Alkyds, Nitrocellulose, Polyurethanes (PU)

Labeling Claims: Silicone-free

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Knowde Enhanced TDS

Identification & Functionality

CASE Ingredients Functions
Technologies

Features & Benefits

Labeling Claims

Applications & Uses

Cure Method
Applications & Uses

Coatings:
ADD-2021 is particularly suited for solvent-based coatings if foam formation is an issue when applied by spraying or curtain coating.
ADD-2021 is recommended in the following resin systems:
• Polyurethane coatings
• Acid-curable coatings
• Air drying and stoving alkyd paints
In addition ADD-2021 helps to prevent surface irregularities and defects due to its leveling
properties.
Suggested application fields include machinery paints, industrial and transportation coatings.
ADD-2021 should be added at the end of the manufacture of the batch.
0.5-2.0% on total formulation weight
Printing Inks:
ADD-2021 reduces the accumulation of foam in the ink pan or reservoir during the printing
process. It improves leveling and reduces surface irregularities.
ADD-2021 may be used in screen, gravure and flexographic printing. It is also suitable for UV curable
formulations.
ADD-2021 should be added at the end of the manufacture of the batch. Care should be taken to
ensure uniform distribution.
0.5-2.0% on total formulation weight

Properties

Physical Form
Appearance
Clear, slightly yellowish liquid
Typical Properties
ValueUnitsTest Method / Conditions
Specific gravity at 20°C0.86g/cm3
CompositionSolution of defoaming substances
Flashpoint25°C
Solvent(s)Xylene

Storage & Handling

STORAGE, SAFETY & HANDLING

ADD-2021 should be stored in a cool dry place. When kept in an original unopened container, it will keep up to 5 years from the date of manufacture. ADD-2021 should be handled in accordance with good industrial practice. Detailed information can be found in the Safety Data Sheet