Description

Propanedioic Acid, (4-Methoxyphenyl)Methylene-, Bis(1,2,2,6,6-Pentamethyl-4-Piperidinyl) Ester is a high-performance hindered amine light stabilizer (HALS) derivative, designed to provide exceptional protection against photo-oxidative degradation in polymeric materials. Its core value lies in its ability to scavenge free radicals and inhibit polymer chain scission, thereby significantly extending the service life and maintaining the aesthetic and mechanical properties of finished products. This advanced additive is essential for formulators and manufacturers in the plastics, coatings, and synthetic fiber industries who require robust, long-term UV stabilization for their high-value applications.

Application

• Plastics Stabilization: Primary use as a highly effective light stabilizer in polyolefins (PP, PE), engineering plastics, and other polymers susceptible to UV degradation.
• Automotive & Industrial Coatings: Protects automotive clear coats, industrial paints, and powder coatings from chalking, gloss loss, and color fade.
• Agricultural Films & Geotextiles: Extends the functional lifespan of greenhouse films, mulch films, and geosynthetics exposed to intense sunlight.
• Synthetic Fibers & Textiles: Imparts UV resistance to polypropylene and polyethylene fibers used in outdoor fabrics, carpets, and artificial turf.
• Adhesives & Sealants: Enhances the durability of polyurethane and other polymer-based adhesives and sealants used in construction and automotive applications.
• Masterbatch Production: A key active component in the manufacture of UV-stabilizer concentrates and additive masterbatches for easy dispersion.

Basic Information

Product Name	Propanedioic Acid, (4-Methoxyphenyl)Methylene-, Bis(1,2,2,6,6-Pentamethyl-4-Piperidinyl) Ester
CAS No.	147783-69-5
Molecular Formula	C₃₃H₅₂N₂O₅
Molecular Weight	556.78 g/mol
Synonyms	Bis(1,2,2,6,6-pentamethyl-4-piperidyl) (4-methoxyphenyl)methylene malonate; (4-Methoxyphenyl)methylene Propanedioic Acid Bis(1,2,2,6,6-Pentamethyl-4-Piperidinyl) Ester; Light Stabilizer 1440; LS 1440; UV-1440; HALS 1440; 2,2,6,6-Tetramethyl-4-piperidyl sebacate derivative (related class); Hindered Amine Light Stabilizer (generic)
EINECS	Contact for details

Quality Control

Our production of Propanedioic Acid, (4-Methoxyphenyl)Methylene-, Bis(1,2,2,6,6-Pentamethyl-4-Piperidinyl) Ester adheres to a strict quality management system to ensure batch-to-batch consistency and performance reliability. Every lot undergoes rigorous analytical testing, including assay by HPLC, identification by FT-IR, and control of key impurities. A comprehensive Certificate of Analysis (COA) detailing purity, physical properties, and performance-related data is provided with each shipment to support your quality assurance protocols.

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. The product is light-sensitive and should be stored in its original opaque container or in amber glass.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Ash Content	≤ 0.1%

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