Description

2-Ethyl-2-(hydroxymethyl)-1,3-propanediol, polymer with 1,3-diisocyanatomethylbenzene, .alpha.-hydro-.omega.-hydroxypoly-[oxy(methyl-1,2-ethanediyl)] and 1,1'-methylenebis[4-isocyanatobenzene] is a specialized polyurethane prepolymer or resin intermediate, identified by CAS NO 68568-50-3. This compound is engineered to provide a unique balance of flexibility, adhesion, and chemical resistance, making it a critical component in high-performance formulations. It is primarily sought after by manufacturers in the coatings, adhesives, sealants, and elastomers (CASE) industries for developing advanced polyurethane systems.

Application

• High-Performance Coatings: Used as a key resin component in two-component polyurethane coatings for industrial, automotive, and marine applications, offering excellent durability and weatherability.
• Advanced Adhesives & Sealants: Serves as a prepolymer in formulating structural adhesives, potting compounds, and flexible sealants with strong bonding and elastic properties.
• Elastomer Production: Acts as an intermediate in the manufacture of cast, thermoplastic, or millable polyurethane elastomers for gaskets, wheels, and industrial parts.
• Composite Materials: Utilized in resin systems for fiber-reinforced composites, providing enhanced matrix toughness and interfacial adhesion.
• Specialty Binders: Employed in the production of binders for abrasives, nonwovens, and other industrial materials requiring chemical and mechanical resilience.
• Waterborne Polyurethane Dispersions (PUDs): Can be modified and used in the synthesis of environmentally friendly, water-based polyurethane dispersions for coatings and finishes.

Basic Information

Product Name	2-Ethyl-2-(hydroxymethyl)-1,3-propanediol, polymer with 1,3-diisocyanatomethylbenzene, .alpha.-hydro-.omega.-hydroxypoly-[oxy(methyl-1,2-ethanediyl)] and 1,1'-methylenebis[4-isocyanatobenzene]
CAS No.	68568-50-3
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Polyurethane prepolymer based on TMP, TDI, MDI, and PEG; Poly(oxy-1,2-ethanediyl), .alpha.-hydro-.omega.-hydroxy-, polymer with 1,3-diisocyanatomethylbenzene, 2-ethyl-2-(hydroxymethyl)-1,3-propanediol and 1,1'-methylenebis[4-isocyanatobenzene]; Trimethylolpropane (TMP), Toluene Diisocyanate (TDI), Polyethylene Glycol (PEG), Methylene Diphenyl Diisocyanate (MDI) copolymer; PU prepolymer resin; Copolymer of TMP, TDI, PEG, and MDI; Polyurethane resin intermediate CAS 68568-50-3
EINECS	Contact for details

Quality Control

Our production of this polyurethane intermediate adheres to strict quality management protocols to ensure batch-to-batch consistency and performance reliability. Key parameters such as NCO content, viscosity, and hydroxyl value are rigorously monitored. A comprehensive Certificate of Analysis (COA) detailing purity, physical properties, and performance specifications is provided with every shipment to support your quality assurance and R&D 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) and must be kept under a dry inert atmosphere (e.g., nitrogen) to prevent premature reaction and degradation. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Viscous liquid to semi-solid
Color (Gardner)	≤ 4
NCO Content (%)	Contact for details
Viscosity (cP @ 25°C)	Contact for details
Hydroxyl Value (mg KOH/g)	Contact for details
Solid Content (%)	Contact for details
Moisture Content (Karl Fischer)	≤ 0.1%
Specific Gravity (25°C)	Contact for details

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