Description

Uv 144 is a high-performance, light-stabilizing additive widely used in polymer protection. This compound is essential for preventing the photodegradation and color fading of sensitive materials exposed to ultraviolet (UV) radiation. It is a critical component for manufacturers in the plastics, coatings, and synthetic fiber industries who require long-term durability and aesthetic stability for their products under demanding environmental conditions.

Application

• Plastics Stabilization: Primary use as a UV absorber and light stabilizer in polyolefins (PP, PE), PVC, polyurethanes, and engineering plastics to extend product lifespan.
• Coatings and Paints: Incorporated into automotive coatings, industrial paints, and wood varnishes to prevent gloss loss, chalking, and color change.
• Synthetic Fibers and Textiles: Used to protect fibers like polyamide and polyester from strength loss and yellowing caused by sunlight exposure.
• Adhesives and Sealants: Enhances the weatherability and maintains the performance integrity of adhesive films and sealant formulations.
• Agricultural Films: A key additive in greenhouse films and mulch films to improve their resistance to solar UV radiation, thereby extending functional service life.
• Automotive Components: Protects interior and exterior plastic parts, such as dashboards, bumpers, and trims, from fading and embrittlement.

Basic Information

Product Name	Uv 144
CAS No.	63843-89-0
Molecular Formula	C22H29N3O
Molecular Weight	351.49 g/mol
Synonyms	2-(2H-Benzotriazol-2-yl)-4,6-bis(1-methyl-1-phenylethyl)phenol; 2-(2'-Hydroxy-3',5'-di-tert-amylphenyl)benzotriazole; UV-144; BLS 1326; Tinuvin 328; Light Stabilizer 328; Phenol, 2-(2H-benzotriazol-2-yl)-4,6-bis(1-methyl-1-phenylethyl)-
EINECS	Contact for details

Quality Control

Our Uv 144 is manufactured under a strict quality management system to ensure batch-to-batch consistency and high purity. The product is tested against rigorous internal specifications, which typically include assay, melting point, and UV absorbance characteristics. A Certificate of Analysis (COA) detailing all quality parameters is provided with each shipment to guarantee compliance with your technical requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from heat sources and incompatible materials. Under these conditions, the product remains stable for extended periods.

Specification

Item	Specification
Appearance	Light yellow to off-white powder or crystals
Identification (IR)	Conforms to standard
Melting Point	80 - 86 °C
Assay (HPLC)	≥ 98.5%
Volatile Matter	≤ 0.5%
Transmittance	≥ 95% (425 nm) ≥ 97% (500 nm)

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.