Description

1,3-Propanediol, 2-Ethyl-2-(Hydroxymethyl)-, Polymer With 1,3-Diisocyanatomethylbenzene And 2,2'-Oxybis[Ethanol], Isocyanate-Terminated is a specialized, high-performance polyurethane prepolymer designed for demanding industrial applications. This product is valued for its excellent reactivity and ability to form durable, cross-linked polymer networks with a wide range of polyols. It is primarily sought by manufacturers in the coatings, adhesives, sealants, and elastomers (CASE) industries, as well as for advanced composite materials, where consistent quality and reliable performance are critical.

Application

• High-Performance Coatings: Used as a key resin component in two-component (2K) polyurethane coatings for industrial maintenance, automotive refinish, and protective marine coatings, offering excellent chemical resistance and durability.
• Adhesives & Sealants: Serves as a reactive prepolymer in the formulation of structural adhesives, potting compounds, and high-strength sealants, providing strong bonding and flexibility.
• Elastomers: A fundamental building block for casting, molding, or extruding polyurethane elastomers used in rollers, wheels, gaskets, and impact-absorbing components.
• Composite Materials: Employed as a matrix resin in fiber-reinforced plastics (FRP) and other composite systems, enhancing mechanical properties and interfacial adhesion.
• Waterproofing Membranes: Formulated into liquid-applied waterproofing and roofing systems that cure to form a seamless, elastic, and weather-resistant barrier.
• Binder Systems: Acts as a polymeric binder in specialized applications such as foundry core binders or abrasive wheel manufacturing.

Basic Information

Product Name	1,3-Propanediol, 2-Ethyl-2-(Hydroxymethyl)-, Polymer With 1,3-Diisocyanatomethylbenzene And 2,2'-Oxybis[Ethanol], Isocyanate-Terminated
CAS No.	68002-38-0
Molecular Formula	Complex Polymer (Contact for details)
Molecular Weight	Variable (Contact for details)
Synonyms	Trimethylolpropane (TMP)-Based Polyurethane Prepolymer; Isocyanate-Terminated Polyether Polyol; Polyurethane Prepolymer based on TMP, m-TMXDI, and Diethylene Glycol; m-TMXDI/TMP/DEG Prepolymer; Aliphatic Polyisocyanate Prepolymer; Reactive Polyurethane Resin; CAS 68002-38-0 Polymer
EINECS	Contact for details

Quality Control

Our production of this polyurethane prepolymer adheres to strict quality management protocols to ensure batch-to-batch consistency and performance reliability. Key parameters such as isocyanate (NCO) content, viscosity, and color are rigorously monitored. Certificates of Analysis (COA) detailing these specifications are provided with every shipment 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) and must be kept under a dry atmosphere (e.g., under dry nitrogen) to prevent premature reaction and gelation. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Clear, viscous liquid
Color (Gardner)	≤ 3
NCO Content (%)	Contact for details
Viscosity (cPs @ 25°C)	Contact for details
Specific Gravity (25°C)	Contact for details
Flash Point	> 200 °C
Solids Content (%)	~100

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