wetting dispersant uv-curable system adhesive additives BYK2152 suitable for 2K PU and acidified system

Anjeka6621 100% active wetting dispersant highly branched structure polyester 

GENERAL DESCRIPTION
Anjeka-6621 is a non-migrating, highly branched wetting and dispersing additive designed for solvent-free epoxy and other reactive resin systems. Its unique structure ensures zero additive release while optimizing pigment and filler stabilization.

PRODUCT DATA
Chemical Composition: Highly branched dendritic polyester
Typical Physical & Chemical Data:
The values listed are representative and not product specifications.
Appearance: Brown viscous liquid
Viscosity @ 25℃, cps: 5,000–20,000
Acid value, mg KOH/g: 20–60
Amine value, mg KOH/g: 1–15
Density @ 23℃, g/cm³: 1.00–1.20
Active content, %: 100

STORAGE & TRANSPORT
Store in a cool, dry location. Separation or turbidity may occur if stored below 0°C; warm to 20°C and mix thoroughly before use. Recommended shelf life should not exceed 12 months.

APPLICATION GUIDELINES
Industrial Coatings
Features & Benefits:
Anjeka-6621 is engineered with a highly branched molecular architecture for solvent-free epoxies, two-component polyurethanes, and acid-catalyzed systems. During milling, the polyester side chains compress while amine groups anchor firmly to pigment/filler surfaces. Pigment-affinity groups adsorb onto particles, while the wrapped polyester side chains prevent amine-epoxy reactions, ensuring long-term storage stability without affecting resin curing.

The additive delivers excellent wetting and deflocculation, significantly reducing system viscosity. It exhibits broad compatibility and does not negatively impact coating properties such as yellowing resistance, metal adhesion, or corrosion protection.

APPLICATION SECTORS
Industrial coatings ●
Wood & furniture coatings ●
Anti-corrosion coatings ●
Automotive coatings ○
● — Specially recommended | ○ — Generally recommended

RECOMMENDED DOSAGE
Dosage is based on dispersant solids relative to pigment volume:
Inorganic pigments: 5%–10%
Titanium dioxide: 1%–3%
Organic pigments: 20%–45%
Carbon black: 20%–80%
These ranges are empirical; optimal dosage should be verified through testing.

INCORPORATION & PROCESSING
For optimal performance, incorporate the additive into the mill base before adding pigments. Pre-mix resin and solvent components, then slowly introduce the additive under continuous stirring. Ensure complete dispersion of the additive before introducing pigments.

PACKAGING
– 25 kg coated iron drum
– 180 kg ring plastic drum

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