Description

Oxirane, Methyl-, Polymer With 2,4-Diisocyanato-1-Methylbenzene And Oxirane, Nonylphenol-Blocked is a specialized, nonylphenol-blocked polyurethane prepolymer derived from propylene oxide and toluene diisocyanate (TDI). This chemical matters as a high-performance, blocked isocyanate crosslinker that provides excellent shelf stability and controlled reactivity upon heating, enabling precise formulation in demanding industrial applications. It is primarily needed by manufacturers in the coatings, adhesives, sealants, and elastomers (CASE) industries seeking to enhance product durability, chemical resistance, and processing characteristics.

Application

• High-Performance Industrial Coatings: As a latent crosslinker in powder coatings, coil coatings, and can coatings, providing excellent flow, leveling, and final film properties like hardness and weatherability.
• Adhesives and Sealants: Used in heat-curable polyurethane adhesives and sealants for automotive, construction, and aerospace applications, offering strong bonding and flexibility.
• Textile and Leather Finishing: Employed in coatings and finishes to impart water repellency, abrasion resistance, and a soft hand feel.
• Electrical Encapsulation: Used in potting and encapsulation compounds for electronic components, providing excellent insulation and protection from moisture and vibration.
• Automotive Underbody Coatings: A critical component in anti-chip and corrosion-resistant coatings for vehicle undercarriages.

Basic Information

Product Name	Oxirane, Methyl-, Polymer With 2,4-Diisocyanato-1-Methylbenzene And Oxirane, Nonylphenol-Blocked
CAS No.	103458-32-8
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Nonylphenol-blocked TDI-based polyurethane prepolymer; Blocked polyisocyanate based on TDI and propylene oxide; TDI/propylene oxide polymer, nonylphenol-blocked; Polyurethane prepolymer, blocked with nonylphenol; Nonylphenol capped polyurethane prepolymer; Latent curing agent for polyurethanes; Blocked isocyanate crosslinker CAS 103458-32-8
EINECS	Contact for details

Quality Control

Our production of Oxirane, Methyl-, Polymer With 2,4-Diisocyanato-1-Methylbenzene And Oxirane, Nonylphenol-Blocked adheres to a stringent quality management system. Every batch undergoes rigorous analytical testing to ensure consistent performance, including measurement of NCO content (prior to blocking), blocking agent content, viscosity, and color. Certificates of Analysis (COA) documenting these parameters 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 / 59-77°F). This product is hygroscopic (moisture-sensitive); containers must be kept tightly sealed to prevent contact with atmospheric moisture, which can lead to premature reaction and product degradation. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Clear, viscous liquid
Color (Gardner)	≤ 4
Viscosity @ 25°C	Contact for details
Nonvolatile Matter	≥ 99.0 %
Blocked NCO Content	Contact for details
Acid Value	≤ 1.0 mg KOH/g
Moisture (Karl Fischer)	≤ 0.1 %

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