Description

Hexanedioic Acid, Polymer With 1,3-Bis(1-Isocyanato-1-Methylethyl)Benzene And 1,4-Butanediol, 2-Hydroxyethyl Acrylate-Blocked is a specialized, blocked polyurethane prepolymer designed for controlled reactivity. This advanced material is crucial for formulating high-performance, moisture-curable coatings, adhesives, and sealants with enhanced shelf stability and processing windows. It is primarily needed by manufacturers in the automotive, industrial maintenance coating, and specialty adhesive sectors seeking durable, cross-linked polymer networks.

Application

• Moisture-Curable Industrial Coatings: Used as a key resin in high-durability topcoats for metal, concrete, and plastic substrates, offering excellent chemical and abrasion resistance.
• Automotive Refinish and OEM Coatings: Provides a stable, one-component system that cures upon exposure to atmospheric humidity, ideal for repair shops and assembly lines.
• High-Performance Adhesives and Sealants: Serves as the backbone for elastic, weather-resistant bonding and sealing applications in construction and transportation.
• Fiberglass Sizing and Composite Binders: Enhances the interfacial adhesion between glass fibers and polymer matrices in composite materials.
• UV/EB-Curable Hybrid Systems: The blocked isocyanate groups allow for formulation into systems that can be cured via ultraviolet (UV) or electron beam (EB) radiation after thermal deblocking.
• Wire and Cable Insulation Coatings: Applied as a protective, flexible, and insulating layer due to its excellent dielectric and mechanical properties.

Basic Information

Product Name	Hexanedioic Acid, Polymer With 1,3-Bis(1-Isocyanato-1-Methylethyl)Benzene And 1,4-Butanediol, 2-Hydroxyethyl Acrylate-Blocked
CAS No.	126257-82-7
Molecular Formula	(C6H10O4 · C14H16N2O2 · C4H10O2)n · C5H8O2 (Blocked)
Molecular Weight	Polymer - Variable (Contact for details)
Synonyms	Adipic Acid, Polymer with 1,3-Bis(1-Isocyanato-1-Methylethyl)Benzene and 1,4-Butanediol, 2-Hydroxyethyl Acrylate-Blocked; Blocked Polyurethane Prepolymers based on TMXDI; TMXDI-based Blocked Prepolymer; HEA-blocked Polyurethane Prepolymer; Acrylated Blocked Isocyanate Prepolymer; Moisture-Curable Urethane Acrylate Oligomer; 2-HEA Blocked Aliphatic Polyisocyanate Prepolymer; Reactive Urethane Resin for Coatings
EINECS	Contact for details

Quality Control

Our production of this blocked polyurethane prepolymer adheres to stringent quality management protocols. Each batch undergoes rigorous testing for critical parameters including NCO content (blocked), viscosity, solids content, color, and deblocking temperature to ensure consistent performance. Certificates of Analysis (COA) detailing these specifications are available upon request to support your quality assurance and regulatory compliance needs.

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). This product is hygroscopic (moisture-sensitive); containers must be kept tightly sealed to prevent moisture ingress, which can lead to premature reaction and gelation. Keep away from heat sources and open flame.

Specification

Item	Specification
Appearance	Clear, viscous liquid
Color (Gardner)	≤ 3
Solids Content	70 ± 2 %
Viscosity (25°C)	3000 - 6000 mPa·s
Blocked NCO Content	4.0 - 6.0 %
Deblocking Temperature	Approx. 120 - 140 °C
Acid Value	≤ 2.0 mg KOH/g
Identification (IR)	Conforms

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