Description

1,2,3-Propanetriol, Polymer With 1,3-Diisocyanatomethylbenzene, Methyloxirane, Oxirane And 1,3-Propanediol, Nonylphenol-Blocked is a specialized polyurethane prepolymer or resin intermediate, where the terminal isocyanate groups are blocked with nonylphenol to provide enhanced stability and controlled reactivity. This chemistry is critical for formulating high-performance, one-component systems that cure upon exposure to heat, releasing the blocking agent and enabling cross-linking. It is primarily required by manufacturers in the coatings, adhesives, sealants, and elastomers (CASE) industries seeking to develop products with excellent mechanical properties, chemical resistance, and application flexibility.

Application

• Heat-Curable Industrial Coatings: As a key resin component in powder coatings, coil coatings, and can coatings that require excellent flow, adhesion, and durability.
• High-Performance Adhesives & Sealants: For formulating one-component (1K) polyurethane adhesives and sealants that cure at elevated temperatures, used in automotive assembly and construction.
• Elastomer and Rubber Modification: As a cross-linking agent or modifier to enhance the tensile strength, abrasion resistance, and oil resistance of synthetic rubbers.
• Wire and Cable Insulation: In the production of insulating enamels and coatings that provide thermal stability and electrical properties.
• Textile and Leather Finishing: For applying durable, flexible, and water-resistant finishes to fabrics and synthetic leather.
• Composite Materials: As a matrix resin or binder in fiber-reinforced plastics (FRP) and other composite systems.

Basic Information

Product Name	1,2,3-Propanetriol, Polymer With 1,3-Diisocyanatomethylbenzene, Methyloxirane, Oxirane And 1,3-Propanediol, Nonylphenol-Blocked
CAS No.	119012-33-8
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Nonylphenol-blocked polyurethane prepolymer; Blocked polyisocyanate resin; TDI/polyol/ethylene oxide/propylene oxide polymer, nonylphenol-blocked; Polyurethane crosslinker, blocked; 1,3-Diisocyanatomethylbenzene polymer with oxirane, methyloxirane, 1,2,3-propanetriol and 1,3-propanediol, nonylphenol-blocked; Blocked aliphatic/aromatic polyisocyanate; Thermosetting polyurethane resin; CAS 119012-33-8
EINECS	Contact for details

Quality Control

Our production of this blocked polyurethane prepolymer adheres to stringent quality protocols to ensure batch-to-batch consistency and performance reliability. Key parameters such as blocked isocyanate content, viscosity, solids content, and deblocking temperature are rigorously monitored. A comprehensive Certificate of Analysis (COA) is provided with each shipment, detailing specifications and test results. Our quality management system supports compliance with relevant industry standards for chemical manufacturing.

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) and light-sensitive; exposure to moisture or prolonged light can affect product stability and performance. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Viscous liquid
Color (Gardner)	≤ 4
Solids Content	70 - 75%
Viscosity (25°C)	2000 - 5000 mPa·s
Blocked NCO Content	5.0 - 7.0 %
Deblocking Temperature	≈ 150°C
Density (25°C)	≈ 1.10 g/cm³
Flash Point	> 100°C

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