Description

2,4-Bis[Isobutyl(2,2,6,6-Tetramethyl-4-Piperidyl)Amino]-1,3-Dioxidocyclobutenediylium is a high-performance hindered amine light stabilizer (HALS) of the cationic type, designed to provide exceptional long-term thermal and UV stability to polymeric materials. Its unique chemical structure offers superior resistance to gas fading and compatibility in a wide range of polymer matrices, making it a critical additive for extending product lifespan and maintaining aesthetic properties. This compound is essential for formulators and manufacturers in the plastics, coatings, and synthetic fiber industries who require robust protection against photo-oxidative degradation.

Application

• Polyolefin Stabilization: Primary use as a light and heat stabilizer in polypropylene (PP) and polyethylene (PE) films, fibers, and molded articles.
• Engineering Plastics: Enhances weatherability and color retention in styrenics (e.g., ABS, HIPS), polyamides, and other engineering polymers.
• Automotive & Industrial Coatings: Protects automotive clearcoats, industrial paints, and powder coatings from chalking, gloss loss, and cracking induced by UV exposure.
• Adhesives & Sealants: Improves the durability and performance lifespan of polymer-based adhesives and sealants used in construction and automotive applications.
• Synthetic Fibers: Incorporated into polyolefin and polyamide fibers for outdoor textiles, geotextiles, and automotive interiors to prevent strength loss and color change.
• Agricultural Films: Critical for stabilizing greenhouse films, mulch films, and silage covers against intense solar radiation, extending their functional service life.

Basic Information

Item	Details
Product Name	2,4-Bis[Isobutyl(2,2,6,6-Tetramethyl-4-Piperidyl)Amino]-1,3-Dioxidocyclobutenediylium
CAS No.	85909-45-1
Molecular Formula	C34H66N4O22+ • 2X- (X = counterion)
Molecular Weight	554.92 g/mol (for cation)
Synonyms	Bis(1-isobutyl-2,2,6,6-tetramethylpiperidin-4-yl) cyclobutane-1,3-dione-2,4-diiminium salt; Cationic HALS; Light Stabilizer 85909-45-1; UV Stabilizer 85909-45-1; BIS(1-ISOBUTYL-2,2,6,6-TETRAMETHYLPIPERIDIN-4-YL) CYCLOBUTANE-1,3-DIONE-2,4-DIIMINIUM DICATION; 2,4-Bis(1-isobutyl-2,2,6,6-tetramethylpiperidin-4-yl)iminium cyclobutane-1,3-dionate
EINECS	Contact for details

Quality Control

Our production of 2,4-Bis[Isobutyl(2,2,6,6-Tetramethyl-4-Piperidyl)Amino]-1,3-Dioxidocyclobutenediylium adheres to a stringent quality management system to ensure batch-to-batch consistency and performance reliability. Every lot is analyzed against comprehensive specifications, including identity confirmation, purity assay, and counterion content. Certificates of Analysis (COA) documenting all test results are provided with each shipment. Our quality commitment supports compliance with relevant global regulatory frameworks for polymer additives.

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. Due to its light-sensitive nature, containers should be kept in original packaging or opaque containers until use.

Specification

Item	Specification
Appearance	White to off-white powder or granules
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 98.0% (cation)
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Ash Content	≤ 0.1%
Counterion Content	As specified per grade

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