Description

Oxirane, Methyl-, Polymer With 1,3-Diisocyanatomethylbenzene And Oxirane, Nonylphenol-Blocked is a specialized, blocked polyurethane prepolymer designed for controlled reactivity and enhanced shelf stability. This compound matters because it provides a latent curing agent that remains stable until exposed to heat, enabling precise formulation and processing in demanding industrial applications. It is primarily needed by manufacturers in the coatings, adhesives, sealants, and elastomers (CASE) industries seeking to improve product performance and processing reliability.

Application

• As a heat-activated curing agent for high-performance polyurethane coatings and paints.
• In the formulation of one-component (1K) polyurethane systems for adhesives and sealants, offering extended pot life.
• For producing flexible and rigid polyurethane elastomers with tailored mechanical properties.
• As a key component in industrial maintenance coatings and corrosion-resistant linings.
• In the manufacture of encapsulants and potting compounds for electrical and electronic components.
• For creating textile and leather finishes that provide durability and water resistance.

Basic Information

Product Name	Oxirane, Methyl-, Polymer With 1,3-Diisocyanatomethylbenzene And Oxirane, Nonylphenol-Blocked
CAS No.	103479-07-8
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Nonylphenol-blocked polyurethane prepolymer; Blocked polyisocyanate adduct; Toluene diisocyanate (TDI) blocked with nonylphenol and propylene oxide polymer; Oxirane, methyl-, polymer with 1,3-diisocyanatomethylbenzene and oxirane, 4-nonylphenol-blocked; Polyurethane, blocked; 1,3-Diisocyanatomethylbenzene, polymer with methyloxirane and oxirane, nonylphenol-blocked; Blocked TDI prepolymer; Latent curing agent for PU
EINECS	Contact for details

Quality Control

Our production of this blocked prepolymer adheres to rigorous quality testing protocols to ensure batch-to-batch consistency and performance. Key parameters such as blocking agent content, free isocyanate level, viscosity, and color are strictly monitored. Certificates of Analysis (COA) documenting 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 sealed to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	Viscous liquid
Color (Gardner)	≤ 4
Viscosity (at 25°C)	Contact for details
Non-Volatile Matter	≥ 99%
Blocked NCO Content	Contact for details
Free NCO Content	≤ 0.5%

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