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

BASF Tinuvin PUR 866 Light Stabilizer

BASF Tinuvin PUR 866 is a high-performance light stabilizer from the Tinuvin series, specifically engineered for polyurethane coatings and elastomers. It provides exceptional UV protection, thermal stability, and hydrolytic resistance while maintaining clarity and color retention. Ideal for demanding outdoor applications requiring long-term durability and gloss preservation.
  • basf tinuvin pur 866 light stabilizer_d8f8e6ee
  • basf tinuvin pur 866 light stabilizer_d8f8e6ee

Features Of BASF Tinuvin PUR 866 Light Stabilizer

  1. High-performance hindered amine light stabilizer (HALS) specifically engineered for polyurethane (PUR) systems.

  2. Excellent compatibility with aromatic and aliphatic polyurethane coatings, adhesives, and elastomers.

  3. Superior long-term UV resistance and hydrolytic stability, even under humid or outdoor exposure conditions.

  4. Low volatility and minimal migration, ensuring durable stabilization without surface blooming or plate-out.

  5. Non-discoloring performance—maintains clarity and color fidelity in transparent and pigmented PUR formulations.

Typical Applications Of BASF Tinuvin PUR 866 Light Stabilizer

  1. UV-stable polyurethane clearcoats for automotive and industrial OEM finishing.

  2. Outdoor architectural coatings based on aliphatic PUR resins.

  3. High-performance polyurethane adhesives used in solar panel lamination and façade bonding.

  4. Transparent PUR elastomers for technical seals, gaskets, and optical components requiring weather resistance.

  5. PUR-based sealants and caulks exposed to continuous sunlight and thermal cycling.

Specifications Of BASF Tinuvin PUR 866 Light Stabilizer

Chemical TypeHindered amine light stabilizer (HALS), bis(2,2,6,6-tetramethyl-4-piperidyl) sebacate derivative
Product FormFree-flowing white to off-white crystalline powder
AppearanceWhite to pale yellow crystalline solid
Primary ApplicationsPolyurethane coatings, adhesives, elastomers, and sealants
Key FeaturesLow volatility, high compatibility with PUR, hydrolysis-resistant, non-discoloring
BenefitsExtended service life under UV exposure, reduced maintenance frequency, improved gloss retention
SolubilitySoluble in common organic solvents (e.g., MEK, THF, acetone); limited water solubility
Recommended Use Level0.3–1.5 wt% relative to polymer solids (application-specific optimization required)


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