Description

1,6-Hexamethylene Diisocyanate, Polymer With 1,1,1-Trimethylolpropane And 1,2-Propylene Oxide is a specialized polyisocyanate prepolymer, a key building block in the formulation of high-performance polyurethane systems. This product matters because it provides a controlled balance of reactivity, flexibility, and durability, enabling the production of coatings, adhesives, and elastomers with superior mechanical and chemical resistance properties. It is essential for manufacturers in the automotive, construction, and industrial coatings sectors who require reliable, high-quality raw materials for demanding applications.

Application

• High-Performance Polyurethane Coatings: Used as a crosslinker in two-component (2K) polyurethane coatings for automotive OEM, refinish, and industrial maintenance applications, offering excellent gloss retention and chemical resistance.
• Adhesives and Sealants: Serves as a key component in formulating structural adhesives, sealants, and binders that require strong adhesion, flexibility, and environmental durability.
• Elastomers and Castables: Employed in the production of polyurethane elastomers for wheels, rollers, and industrial parts, providing a combination of toughness and abrasion resistance.
• Waterborne Polyurethane Dispersions (PUDs): Acts as a hydrophobic modifier or crosslinker in the synthesis of PUDs for eco-friendly coatings and finishes on textiles, leather, and plastics.
• Composite Materials: Utilized as a matrix resin or binder in fiber-reinforced composites for the marine, transportation, and wind energy industries.
• Flexible Foams and Cushioning: Can be formulated into specialized flexible foam systems where specific modulus and resilience properties are required.

Basic Information

Product Name	1,6-Hexamethylene Diisocyanate, Polymer With 1,1,1-Trimethylolpropane And 1,2-Propylene Oxide
CAS No.	27634-93-1
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	HDI Trimer; HDI-based polyisocyanate; Poly(hexamethylene diisocyanate) with trimethylolpropane and propylene oxide; HDI-TMP-PO adduct; Aliphatic polyisocyanate prepolymer; HDI isocyanurate modified with TMP and PO; Trimethylolpropane ethoxylate triisocyanate (HDI-based); Polyfunctional aliphatic isocyanate
EINECS	Contact for details

Quality Control

Our production of this polyisocyanate prepolymer adheres to rigorous quality control protocols to ensure batch-to-batch consistency and performance reliability. Key parameters such as NCO content, viscosity, and monomeric HDI content are strictly monitored. A comprehensive Certificate of Analysis (COA) is provided with each shipment, detailing all relevant specifications. Our quality management system is designed to meet the demands of global industrial and coatings markets.

Storage

Preserve in a tightly closed, moisture-proof container, protected from light. Store in a cool, dry, well-ventilated area at temperatures recommended for polyisocyanate products (typically between 15°C and 25°C). This product is hygroscopic (moisture-sensitive). Exposure to moisture will cause viscosity increase and gelation. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
NCO Content	Contact for details
Viscosity (at 25°C)	Contact for details
Monomeric HDI Content	< 0.5% (typical)
Color (Gardner)	≤ 2
Specific Gravity (25°C)	Contact for details
Flash Point	> 100°C

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