Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

BASF Tinuvin 400 DW UV Absorber

BASF Tinuvin 400 DW is a high-performance aqueous dispersion UV absorber from the Tinuvin series, offering excellent photostability and compatibility with waterborne coatings and inks. It protects polymers against UV-induced degradation without compromising clarity or film integrity, ideal for architectural, automotive, and industrial applications requiring low-VOC, eco-friendly solutions.
  • basf tinuvin 400 dw uv absorber_395b77f9
  • basf tinuvin 400 dw uv absorber_395b77f9

Features Of BASF Tinuvin 400 DW UV Absorber

  1. High-performance, hydroxyphenyl-triazine (HPT) based UV absorber with exceptional photostability.

  2. Water-dispersible formulation enabling easy incorporation into aqueous systems without organic solvents.

  3. Excellent compatibility with waterborne acrylics, polyurethanes, and alkyd emulsions.

  4. Low volatility and non-migrating behavior ensure long-term protection in demanding outdoor applications.

  5. Meets stringent regulatory requirements including REACH compliance and low ecotoxicity profile.

Typical Applications Of BASF Tinuvin 400 DW UV Absorber

  1. Waterborne architectural coatings for exterior walls and facades.

  2. Industrial maintenance coatings on metal and concrete substrates.

  3. Wood coatings, including transparent and semi-transparent stains for decking and cladding.

  4. Automotive refinish clearcoats requiring high-gloss retention and UV resistance.

  5. Plastic coatings and inks for outdoor signage and extruded profiles.

Specifications Of BASF Tinuvin 400 DW UV Absorber

Chemical TypeHydroxyphenyl-triazine (HPT)
Product FormWhite to off-white aqueous dispersion
AppearanceOpaque, slightly viscous liquid
Active ContentApprox. 40 wt.% Tinuvin® 400
pH (10% dispersion)7.0 – 8.5
Particle Size (D50)100 – 300 nm
Storage Stability≥ 12 months at 5–30 °C (unopened)
Primary ApplicationsUV stabilization of waterborne coatings and dispersions


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