Description

Light Stabilizer-944 is a high-performance hindered amine light stabilizer (HALS) widely recognized for its exceptional long-term thermal and light stabilization properties. Its primary value lies in protecting polymers from photo-oxidative degradation, thereby significantly extending the service life and maintaining the aesthetic appearance of finished products. This additive is essential for manufacturers in the plastics, coatings, and synthetic fiber industries who require reliable protection against UV radiation and heat aging for their high-value materials.

Application

• Stabilization of polyolefins (PP, HDPE, LDPE) against UV degradation in automotive parts, agricultural films, and outdoor furniture.
• Enhancing the weatherability and color retention of industrial and automotive coatings, including refinish and OEM paints.
• Protection of engineering plastics such as polyamide (PA) and thermoplastic polyolefin (TPO) used in demanding exterior applications.
• Improving the longevity of synthetic fibers and tapes exposed to sunlight, such as those used in geotextiles and outdoor fabrics.
• Use in adhesives and sealants to prevent embrittlement and loss of performance due to outdoor exposure.
• Formulation additive for masterbatches and compound production, offering easy dispersion and processing stability.

Basic Information

Product Name	Light Stabilizer-944
CAS No.	70624-18-9
Molecular Formula	C41H72N8O4
Molecular Weight	741.1 g/mol
Synonyms	Bis(2,2,6,6-tetramethyl-4-piperidyl) sebacate; Chimassorb 944; Tinuvin 944; LS-944; HALS-944; Poly[[6-[(1,1,3,3-tetramethylbutyl)amino]-1,3,5-triazine-2,4-diyl][(2,2,6,6-tetramethyl-4-piperidyl)imino]-1,6-hexanediyl[(2,2,6,6-tetramethyl-4-piperidyl)imino]]; Nylostab S-EED; Lowilite 94
EINECS	274-759-5

Quality Control

Our Light Stabilizer-944 is manufactured under a strict quality management system to ensure batch-to-batch consistency and high performance. Production adheres to relevant ISO standards, and the product is compliant with global regulations such as REACH. Every shipment is accompanied by a comprehensive Certificate of Analysis (COA) detailing purity, assay, and other critical parameters to meet our clients' stringent quality assurance 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 open flame. The product is hygroscopic (moisture-sensitive); ensure the original container is resealed tightly after use to prevent moisture absorption.

Specification

Item	Specification
Appearance	White or light yellow powder or granules
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0 %
Melting Point	100 - 135 °C
Volatile Matter	≤ 0.5 %
Ash Content	≤ 0.1 %
Transmittance (425nm)	≥ 95 %
Transmittance (500nm)	≥ 97 %

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