Description

Fatty Acids, C15-18, Tetramethylpiperidinyl Esters CAS NO 86403-32-9 is a specialized ester derivative of C15-18 fatty acids and 2,2,6,6-tetramethylpiperidinol, functioning as a high-performance hindered amine light stabilizer (HALS). This compound is engineered to provide exceptional long-term thermal and UV stability to polymeric materials by effectively scavenging free radicals. It is a critical additive for formulators and manufacturers in the plastics, coatings, and synthetic fiber industries seeking to enhance product durability and lifespan.

Application

• As a primary light stabilizer (HALS) in polyolefins (PP, PE) for automotive parts, agricultural films, and outdoor furniture.
• As a UV stabilizer in industrial and automotive coatings, lacquers, and paints to prevent chalking, gloss loss, and color fading.
• As a polymer additive in synthetic fibers and engineering plastics to improve weatherability and thermal aging resistance.
• In adhesives and sealants formulations to maintain elasticity and performance under prolonged sunlight exposure.
• For the stabilization of polyurethane systems used in exterior applications.
• As a synergistic component in stabilization packages alongside UV absorbers and antioxidants.

Basic Information

Product Name	Fatty Acids, C15-18, Tetramethylpiperidinyl Esters
CAS No.	86403-32-9
Molecular Formula	Typically C~20-24H~41-47NO2 (Mixture)
Molecular Weight	~350-400 g/mol (Average)
Synonyms	2,2,6,6-Tetramethyl-4-piperidinol esters of C15-18 fatty acids; HALS ester of C15-18 fatty acids; Tetramethylpiperidinyl stearate (mixture); Light stabilizer 770; Bis(2,2,6,6-tetramethyl-4-piperidyl) sebacate related ester mixtures; N-HALS derivative of mixed fatty acids; Timwin 770 related ester; NOR HALS ester.
EINECS	Contact for details

Quality Control

Our production of Fatty Acids, C15-18, Tetramethylpiperidinyl Esters adheres to stringent quality management protocols to ensure batch-to-batch consistency and performance reliability. Quality is verified through comprehensive analytical testing, including assay, identification, and impurity profiling. A Certificate of Analysis (COA) detailing all relevant specifications is provided with each shipment to support your quality assurance processes.

Storage

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

Specification

Item	Specification
Appearance	White to off-white powder or flakes
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Heavy Metals	≤ 10 ppm
Ash Content	≤ 0.1%

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