Description

1,2,3-Propanetriol, Polymer With 2,4-Diisocyanato-1-Methylbenzene, Methyloxirane, Oxirane And 1,2-Propanediol, Nonylphenol-Blocked is a specialized, nonylphenol-blocked polyurethane prepolymer derived from a complex polyol and isocyanate backbone. This chemistry is engineered to provide a latent reactive system, where the blocking agent prevents premature curing until activated by heat, offering precise control in industrial formulations. It is a critical intermediate for manufacturers in the coatings, adhesives, sealants, and elastomers (CASE) industries seeking enhanced performance, shelf stability, and tailored cross-linking properties.

Application

• Heat-Curable Industrial Coatings: As a key resin component in powder coatings, coil coatings, and can coatings, where thermal deblocking initiates cross-linking for durable, chemical-resistant finishes.
• High-Performance Adhesives & Sealants: Used in formulating one-component (1K) polyurethane adhesives and sealants that cure upon exposure to elevated temperatures, simplifying application and storage.
• Elastomer and Rubber Modification: Serves as a cross-linking agent or modifier in castable urethane elastomers, improving tensile strength, abrasion resistance, and dynamic properties.
• Binder Systems for Composites: Employed in fiber-reinforced plastics (FRP) and other composite materials where controlled cure profiles are essential for manufacturing consistency.
• Automotive and Aerospace Components: Integral to under-the-hood components, gaskets, and interior trim parts requiring materials that withstand thermal cycling and harsh environments.
• Electrical Encapsulation and Potting: Provides protective, insulating properties for electronic components after a controlled thermal cure cycle.

Basic Information

Product Name	1,2,3-Propanetriol, Polymer With 2,4-Diisocyanato-1-Methylbenzene, Methyloxirane, Oxirane And 1,2-Propanediol, Nonylphenol-Blocked
CAS No.	119012-32-7
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Nonylphenol-blocked polyurethane prepolymer; Blocked polyurethane resin; Toluene diisocyanate (TDI) polyol prepolymer, nonylphenol-blocked; Polyether polyol-TDI adduct, blocked; Thermosetting polyurethane resin; 1K PU prepolymer; Latent curing agent; CAS 119012-32-7
EINECS	Contact for details

Quality Control

Our blocked polyurethane prepolymers are manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure consistent performance, including measurement of blocked isocyanate content, viscosity, solids content, and deblocking temperature. 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/59-77°F). This product is hygroscopic (moisture-sensitive); containers must be kept tightly sealed to prevent exposure to atmospheric moisture, which can lead to premature reaction and product degradation.

Specification

Item	Specification
Appearance	Viscous liquid
Color (Gardner)	≤ 4
Solids Content	Contact for details
Viscosity (at 25°C)	Contact for details
Blocked NCO Content	Contact for details
Deblocking Temperature	Contact for details
Identification (IR)	Conforms

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