Description

Chimassorb 944 is a high-performance, polymeric hindered amine light stabilizer (HALS) widely recognized for its exceptional long-term thermal and UV stability. This additive is critical for protecting polymers from photo-oxidative degradation, thereby significantly extending the service life and maintaining the mechanical properties of finished products. It is an essential component for manufacturers in the plastics, packaging, and synthetic fiber industries seeking to enhance the durability and colorfastness of their materials under demanding environmental conditions.

Application

• Primary light stabilizer for polyolefins, including high-density polyethylene (HDPE), low-density polyethylene (LDPE), and polypropylene (PP) films, fibers, and molded articles.
• Provides critical UV protection for automotive components, agricultural films, and construction materials like geomembranes and siding.
• Used in synthetic fibers and tapes to prevent color fading and loss of tensile strength caused by sunlight exposure.
• Stabilizes engineering plastics and thermoplastic polyurethanes (TPU) in applications requiring long-term outdoor weatherability.
• Effective in thick-section polyolefin articles due to its low volatility and excellent migration resistance.
• Can be used in combination with other additives like antioxidants and UV absorbers for synergistic stabilization systems.

Basic Information

Product Name	Chimassorb 944
CAS No.	71878-19-8
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Poly[[6-[(1,1,3,3-tetramethylbutyl)amino]-1,3,5-triazine-2,4-diyl][(2,2,6,6-tetramethyl-4-piperidinyl)imino]-1,6-hexanediyl[(2,2,6,6-tetramethyl-4-piperidinyl)imino]]; Bis(2,2,6,6-tetramethyl-4-piperidyl) sebacate polymer with N-(2,2,6,6-tetramethyl-4-piperidinyl)-n-butylamine and 2,4,6-trichloro-1,3,5-triazine; Chimassorb 944LD; Hostavin N 30; Tinuvin 622; Lowilite 94; Light Stabilizer 944; HALS 944; Polymeric HALS
EINECS	Contact for details

Quality Control

Our Chimassorb 944 is manufactured under a strict quality management system to ensure batch-to-batch consistency and performance reliability. Each lot is tested against stringent internal specifications to guarantee its efficacy as a light stabilizer. A comprehensive Certificate of Analysis (COA) detailing key parameters such as assay, melting range, and additive content is provided with every 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). This product is hygroscopic (moisture-sensitive); keep the original container tightly sealed when not in use to minimize exposure to atmospheric humidity.

Specification

Item	Specification
Appearance	White to off-white powder or granules
Identification (IR)	Conforms
Assay (HPLC)	≥ 96.0%
Melting Range	100 - 135 °C
Volatile Matter	≤ 0.5%
Ash Content	≤ 0.1%

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