Anjeka-5520 high performance silicone-free defoaming polymer for polyurethane resin Solvent-based PU wood coatings

GENERAL DESCRIPTION

Anjeka-5520 is a highly effective silicone-free antifoam additive specifically engineered for use in polyurethane resin-based systems. Its innovative molecular design enables rapid and thorough elimination of both fine micro-bubbles and larger macro-bubbles that occur during production, application, and curing stages. It performs reliably in solvent-containing as well as solvent-free compositions.
 

PRODUCT DATA

Chemical Basis:
Silicone-free polymer-based antifoam agent

SPECIAL NOTES

Due to its relatively strong incompatibility, the influence of this additive on transparency and the potential risk of cratering in clearcoat systems should be carefully evaluated, particularly in non-polar formulations.

APPLICATION GUIDELINES
Features and Benefits

Particularly effective for foam control in solvent-based polyurethane systems and epoxy flooring applications

Provides excellent defoaming efficiency with rapid removal of entrapped micro-bubbles

Suitable for high-shear processing methods such as high-speed mixing, knife coating, roller coating, and casting

Maintains intercoat adhesion and recoatability while reducing surface defects such as fisheyes and craters

Exhibits good compatibility and stability in solvent-based PU coatings and adhesives, as well as in high-viscosity solvent-free PU systems (e.g., flooring and potting compounds)

Offers long-term storage stability without separation or sedimentation

APPLICATION SECTORS

Industrial Coatings
Solvent-based PU wood coatings, industrial coatings, plastic coatings, metallic coatings, solvent-free PU self-leveling floor coatings, and anticorrosive coatings.
Adhesives and Sealants

1K and 2K PU structural adhesives, reactive hot-melt adhesives (PUR), electronic potting and encapsulation resins (especially in silicone-sensitive systems), and automotive sealants.

Elastomers and Composites
Cast polyurethane elastomers (CPU), TPU processing, and PU composite impregnation and molding applications.

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

RECOMMENDED LEVELS

Recommended dosage is 0.1–1.0% (as supplied), based on the total formulation.
The optimum addition level should be established through laboratory evaluation.

INCORPORATION AND PROCESSING INSTRUCTIONS

For optimal performance, the defoamer should be incorporated before the grinding or dispersion stage.
If post-added, sufficient shear must be applied to ensure uniform dispersion and to prevent surface defects such as 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 an annual capacity
of 6,000 tonnes.
The interface additives project was officially established in the Songzi Chemical Park in November 2022.
 
 
Benefits to our customers and partners:
Stable large-scale production with enhanced quality control
Lower unit production cost
 
Collaboration Opportunities:
Contract manufacturing
OEM / ODM partnerships

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