Description

1,3-Propanediol, 2-Ethyl-2-(Hydroxymethyl)-, Polymer With 2,4-Diisocyanato-1-Methylbenzene is a specialized polyurethane prepolymer derived from the reaction of a branched triol and toluene diisocyanate (TDI). This compound is valued for its role as a key reactive intermediate, providing enhanced mechanical properties, chemical resistance, and crosslinking density in final polymer formulations. It is primarily sought by manufacturers in the coatings, adhesives, sealants, and elastomers (CASE) industries, as well as for advanced composite materials.

Application

• High-Performance Coatings: Used as a building block in polyurethane coatings for industrial, automotive, and marine applications, offering excellent durability, gloss, and weather resistance.
• Adhesives & Sealants: Serves as a core component in formulating structural and elastic adhesives and sealants with strong bonding strength and flexibility.
• Elastomers: Employed in the production of castable and thermoplastic polyurethane elastomers for gaskets, wheels, and industrial parts.
• Composite Materials: Acts as a matrix resin or modifier in fiber-reinforced plastics (FRP) and other composite systems to improve toughness and interfacial adhesion.
• Encapsulation & Potting Compounds: Utilized in electrical and electronic applications for protective encapsulation due to its good insulating properties and adhesion.
• Binder Systems: Functions as a polymeric binder in specialty applications such as foundry resins or abrasive tools.

Basic Information

Product Name	1,3-Propanediol, 2-Ethyl-2-(Hydroxymethyl)-, Polymer With 2,4-Diisocyanato-1-Methylbenzene
CAS No.	29402-12-8
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Trimethylolpropane-TDI Adduct; TMP-TDI Adduct; Polyurethane Prepolymer from TMP and TDI; 2-Ethyl-2-(hydroxymethyl)-1,3-propanediol polymer with 2,4-diisocyanato-1-methylbenzene; TMP/TDI Prepolymer; Tris(2-hydroxyethyl)propane-TDI Adduct; TDI Adduct of Trimethylolpropane; Urethane Prepolymer CAS 29402-12-8
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 NCO content, viscosity, and color are rigorously monitored. A comprehensive Certificate of Analysis (COA) detailing all specifications is provided with each shipment to support your quality assurance processes.

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). Keep container tightly sealed when not in use to prevent moisture absorption and premature reaction. Isolate from heat, open flames, and incompatible materials such as alcohols, amines, and water.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid
NCO Content	Contact for details
Viscosity (25°C)	Contact for details
Color (Gardner)	≤ 3
Specific Gravity (25°C)	Contact for details
Moisture Content	≤ 0.05%

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