Description

Fatty Acids, C18-Unsatd., Dimers, Polymers With 1,6-Diisocyanatohexane, 1-(2-Hydroxyethyl)-2-Imidazolidinone-Blocked is a specialized blocked polyisocyanate prepolymer derived from unsaturated C18 fatty acid dimers and polymers. This compound is engineered to provide a latent crosslinking functionality, which is activated by heat to form durable, flexible polymer networks. It is a critical raw material for formulators seeking to enhance the performance and processing characteristics of high-end industrial coatings, adhesives, and sealants.

Application

• Heat-Curable Industrial Coatings: Used as a crosslinker in high-performance baking enamels for automotive, coil, and appliance coatings, offering excellent flexibility and chemical resistance.
• Advanced Adhesives and Sealants: Serves as a key component in one-component (1K) polyurethane systems that cure upon exposure to heat, simplifying application and storage.
• Wire and Cable Insulation: Imparts thermal stability and mechanical strength to insulating materials that require a controlled curing process.
• Elastomers and Castable Urethanes: Utilized in the production of flexible, abrasion-resistant polyurethane parts and components.
• Textile and Leather Finishes: Provides durable, water-resistant, and flexible finishes for technical textiles and synthetic leather.
• Composite Materials: Acts as a matrix resin or modifier in fiber-reinforced plastics (FRP) to improve impact resistance and adhesion.

Basic Information

Item	Detail
Product Name	Fatty Acids, C18-Unsatd., Dimers, Polymers With 1,6-Diisocyanatohexane, 1-(2-Hydroxyethyl)-2-Imidazolidinone-Blocked
CAS No.	210920-37-9
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Blocked HDI Trimer based on Dimer Fatty Acid; Fatty acids, C18-unsaturated, dimers, polymers with 1,6-diisocyanatohexane, 1-(2-hydroxyethyl)-2-imidazolidinone-blocked; Urethane prepolymer, blocked; Hexamethylene diisocyanate blocked trimer; HDI blocked polyisocyanate; Dimer fatty acid modified blocked polyisocyanate; Thermolatent polyisocyanate; 1-(2-Hydroxyethyl)imidazolidin-2-one blocked polyisocyanate.
EINECS	Contact for details

Quality Control

Our production of this blocked polyisocyanate adheres to stringent quality management protocols. Every batch is analyzed to ensure consistent performance characteristics such as blocking agent content, free isocyanate (NCO) level, viscosity, and color. A Certificate of Analysis (COA) detailing these specifications is provided with each shipment to guarantee compliance with your formulation requirements.

Storage

Preserve in a tightly closed container, protected from light. This material is hygroscopic (moisture-sensitive) and should be stored in a cool, dry, well-ventilated area at room temperature (15-25°C/59-77°F). Keep the container tightly sealed under a dry, inert atmosphere (e.g., nitrogen) to prevent moisture absorption and premature reaction. Store away from strong alkalis and organic solvents.

Specification

Item	Specification
Appearance	Viscous liquid
Color (Gardner)	≤ 4
Viscosity (at 25°C)	Contact for details
NCO Content (Blocked)	Contact for details
Solid Content	Contact for details
Blocking Agent Content	Specified
De-blocking Temperature	Specified

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