Anjeka-5520 Defoamer For solvent-based and solvent-free systems silicone-free defoamer designed for polyurethane resin systems

GENERAL DESCRIPTION

Anjeka-5520 is a high-performance silicone-free defoamer designed for polyurethane resin systems. Its unique chemical structure effectively eliminates both micro- and macro-bubbles generated during production, application, and curing. It is suitable for both solvent-based and solvent-free systems.

PRODUCT DATA

Chemical composition: Silicone-free defoaming polymer

Typical physical data:

(The following values are typical, not to be considered as product specifications.)

Appearance: Colorless transparent liquid

Active content (%): 100

Density (g/cm³, 23℃): 0.80–1.10

STORAGE AND TRANSPORT

At temperatures below 5 °C, separation or turbidity may occur. Heat to 20 °C and mix thoroughly before use.

Store in a cool, dry place.

Recommended storage time should not exceed 12 months.

SPECIAL NOTES

Due to its relatively strong incompatibility, in non-polar systems it is necessary to evaluate its influence on clarity and possible cratering of clearcoats.

APPLICATION GUIDELINES

Features and Advantages:

Especially suitable for foam control in solvent-based polyurethane systems and epoxy flooring coatings.

Excellent defoaming properties, rapidly eliminates micro-bubbles.

Suitable for high-speed mixing, knife coating, roller coating, and casting processes.

Ensures inter-coat adhesion, recoatability, and bonding reliability, preventing defects such as fisheyes and craters.

Stable in solvent-based PU coatings/adhesives and high-viscosity solvent-free PU systems (e.g., flooring, potting compounds).

Provides long-term storage stability without separation or precipitation.

Application Sectors:

Industrial coatings:

Solvent-based PU wood coatings, industrial coatings, plastic coatings, metallic coatings, solvent-free PU self-leveling floor coatings, anticorrosive coatings.

Adhesives and sealants:

1K/2K PU structural adhesives, reactive hot-melt adhesives (PUR), electronic potting compounds, encapsulation resins (especially for silicone-sensitive applications), automotive sealants.

Elastomers and composites:

Cast PU elastomers (CPU), TPU processing, PU composite impregnation and molding.

RECOMMENDED LEVELS

0.1–1.0% additive dosage (as supplied), based on total formulation.

The optimal dosage should be determined through a series of laboratory tests.

INCORPORATION AND PROCESSING INSTRUCTIONS

For best performance, add the defoamer prior to the grinding stage.

If added later, sufficient shear force must be applied to ensure proper dispersion of the defoamer and to avoid cratering.

PACKAGING

25 kg lined iron drums

180 kg plastic drums

Our team:

Our company:

We are building a new large-scale production base

strategically located in Hubei Province,with annual production capacity of 6000 tonnes of Interface additives project settled in Songzi chemical park in November 2022.

Benefits to our customers and collaboration partners:

• stable large-scale production, better quality control

• lower production unit cost

Collaboration Opportunities:

• contract manufacturing and OEM/ODM collaboration opportunities

Our Certifcate&Patents