Description

1,3,5-Tris(6-Isocyanatohexyl)Biuret is a specialized aliphatic polyisocyanate biuret trimer, a high-performance chemical building block prized for its excellent weatherability and color stability. This compound serves as a critical crosslinking agent, enabling the formulation of durable, high-gloss coatings and elastomers that resist yellowing. It is essential for manufacturers in the automotive, industrial coating, and specialty adhesive sectors seeking to enhance product longevity and performance under demanding environmental conditions.

Application

• High-Performance Polyurethane Coatings: A key crosslinker in automotive clearcoats, industrial maintenance paints, and plastic coatings requiring exceptional gloss retention and resistance to UV degradation and chemicals.
• Weather-Resistant Elastomers: Used in the synthesis of polyurethane elastomers for applications like seals, gaskets, and rollers that must maintain flexibility and mechanical properties outdoors.
• Adhesives and Sealants: Imparts enhanced durability and environmental resistance to structural and specialty adhesives used in construction, transportation, and assembly.
• Fiber Optic Coatings: Employed in coatings that protect optical fibers, where long-term clarity and protection from moisture and mechanical stress are paramount.
• Synthetic Leather and Textile Finishes: Provides a durable, flexible topcoat for synthetic leather (PU leather) and technical textiles, improving abrasion resistance and feel.

Basic Information

Product Name	1,3,5-Tris(6-Isocyanatohexyl)Biuret
CAS No.	4035-89-6
Molecular Formula	C27H45N9O6
Molecular Weight	615.71 g/mol
Synonyms	Hexamethylene Diisocyanate Biuret Trimer; HDI Biuret Trimer; Tris(6-isocyanatohexyl)biuret; Biuret of Hexamethylene Diisocyanate; HDI-Biuret; Polyisocyanate based on HDI; Desmodur N 100; Bayhydur 3100; Tolonate HDB-LV
EINECS	Contact for details

Quality Control

Our 1,3,5-Tris(6-Isocyanatohexyl)Biuret is manufactured under stringent quality management systems. Each batch undergoes comprehensive analysis to ensure consistent purity, viscosity, and NCO content, meeting the exacting standards required for high-performance polyurethane applications. Certificates of Analysis (COA) detailing key parameters are provided with every shipment to guarantee traceability and compliance with your specifications.

Storage

Preserve in a tightly closed, moisture-proof container, protected from light. Store in a cool, dry, well-ventilated area at temperatures between 15°C and 25°C (59°F and 77°F). Due to its hygroscopic (moisture-sensitive) nature and reactivity with water, containers must be kept sealed under a dry inert atmosphere (e.g., nitrogen) after opening to prevent polymerization and maintain product integrity.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Assay (NCO Content)	Contact for details
Purity (HDI Biuret Trimer)	≥ 90%
Viscosity (at 25°C)	Contact for details
Color (Gardner)	≤ 2
Density (at 20°C)	~1.17 g/cm³
Monomer HDI Content	< 0.5%
Solvent Content	Contact for details

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