Description

1,3-Propanediol, 2-Ethyl-2-(Hydroxymethyl)-, Polymer With 1,1'-Methylenebis[4-Isocyanatobenzene] is a specialized polyurethane prepolymer derived from trimethylolpropane (TMP) and methylene diphenyl diisocyanate (MDI). This compound matters for its role as a high-performance building block, offering excellent mechanical properties, chemical resistance, and versatility in formulating advanced materials. Industrial manufacturers in the coatings, adhesives, sealants, and elastomers (CASE) sectors require it to develop durable, cross-linked polymer systems with enhanced performance characteristics.

Application

• High-Performance Coatings: Used as a key resin component in two-component (2K) polyurethane coatings for industrial, automotive, and marine applications, providing excellent hardness, gloss, and chemical resistance.
• Adhesives & Sealants: Serves as a prepolymer in formulating structural adhesives and flexible sealants, offering strong bonding strength and durability under various environmental conditions.
• Elastomers: A fundamental raw material for casting, molding, or extruding polyurethane elastomers used in wheels, rollers, and impact-resistant parts.
• Composite Materials: Acts as a matrix resin or modifier in fiber-reinforced composites, enhancing interlaminar shear strength and thermal stability.
• Waterborne Polyurethane Dispersions (PUDs): Can be modified and dispersed in water to create environmentally friendly coating and adhesive formulations.
• Potting & Encapsulation: Employed for electrical potting compounds, providing excellent insulation properties and protection for sensitive electronic components.

Basic Information

Product Name	1,3-Propanediol, 2-Ethyl-2-(Hydroxymethyl)-, Polymer With 1,1'-Methylenebis[4-Isocyanatobenzene]
CAS No.	27967-69-7
Molecular Formula	(C9H20O3 · C15H10N2O2)n
Molecular Weight	Polymer - Contact for details
Synonyms	Trimethylolpropane-MDI Prepolymer; TMP-MDI Adduct; Poly(TMP-MDI); MDI-terminated TMP oligomer; Polyurethane prepolymer based on TMP and MDI; Isocyanate-functional TMP polymer; 2-Ethyl-2-(hydroxymethyl)-1,3-propanediol polymer with methylenebis(4-phenyl isocyanate); TMP-MDI resin
EINECS	Contact for details

Quality Control

Our products undergo rigorous quality testing to ensure compliance with industry standards. Each batch is controlled for critical parameters including isocyanate (NCO) content, viscosity, and hydrolyzable chlorine to guarantee batch-to-batch consistency and performance. Certificates of Analysis (COA) detailing these specifications are available upon request. Our manufacturing processes adhere to ISO 9001 quality management principles.

Storage

Preserve in a tightly closed container, protected from light. This material is hygroscopic (moisture-sensitive). Store in a cool, dry, and well-ventilated area at room temperature (15-25°C / 59-77°F). Keep the container tightly sealed under a dry inert atmosphere (e.g., nitrogen) to prevent moisture absorption and premature reaction. Isolate from sources of heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Clear, pale yellow to amber viscous liquid
Identification (IR)	Complies
NCO Content (%)	Contact for details
Viscosity (cP @ 25°C)	Contact for details
Hydrolyzable Chloride (ppm)	≤ 200
Specific Gravity (25°C)	Contact for details
Moisture (Karl Fischer) (ppm)	≤ 200

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