Description

1,3-Propanediol, 2-ethyl-2-(hydroxymethyl)-, polymer with 1,3-diisocyanatomethylbenzene, .alpha.-hydro-.omega.-hydroxypoly[oxy(methyl-1,2-ethanediyl)] and .alpha.-hydro-.omega.-hydroxypoly[oxy(methyl-1,2-ethanediyl)] ether with 2-ethyl-2-(hydroxymethyl)-1 is a specialized polyurethane polyol prepolymer, designed to deliver exceptional performance as a reactive intermediate. This compound matters for formulators seeking to enhance the flexibility, adhesion, and chemical resistance of final polyurethane products. It is primarily needed by manufacturers in the coatings, adhesives, sealants, and elastomers (CASE) industries, as well as for producing high-performance foams and composites.

Application

• High-Performance Coatings: Used as a key resin component in two-component polyurethane coatings for industrial, automotive, and marine applications, providing excellent durability and gloss retention.
• Adhesives & Sealants: Serves as a backbone polymer in formulating structural adhesives and flexible sealants with strong bonding strength and environmental resistance.
• Elastomers: Employed in the production of castable and thermoplastic polyurethane elastomers for gaskets, wheels, and industrial parts requiring toughness and abrasion resistance.
• Flexible & Rigid Foams: Acts as a polyol component in the synthesis of specialized polyurethane foams, tailoring density and physical properties for insulation or cushioning.
• Composite Materials: Utilized as a matrix resin or modifier in fiber-reinforced composites, improving interfacial adhesion and mechanical properties.
• Potting & Encapsulation: Ideal for electronic potting compounds, offering protection against moisture, vibration, and thermal cycling.

Basic Information

Product Name	1,3-Propanediol, 2-ethyl-2-(hydroxymethyl)-, polymer with 1,3-diisocyanatomethylbenzene, .alpha.-hydro-.omega.-hydroxypoly[oxy(methyl-1,2-ethanediyl)] and .alpha.-hydro-.omega.-hydroxypoly[oxy(methyl-1,2-ethanediyl)] ether with 2-ethyl-2-(hydroxymethyl)-1
CAS No.	70879-53-7
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Trimethylolpropane (TMP)-based polyurethane prepolymer; Polyether polyol, TMP-initiated, toluene diisocyanate (TDI) terminated; Polyurethane polyol resin; TMP polyol/TDI adduct; Aliphatic polyether-based urethane polyol; Reactive polyol intermediate; CAS 70879-53-7
EINECS	Contact for details

Quality Control

Our polyurethane polyol prepolymer is manufactured under strict process controls to ensure batch-to-batch consistency. Quality is verified through rigorous testing of key parameters including hydroxyl value, isocyanate content, viscosity, and moisture. Certificates of Analysis (COA) documenting full specifications are provided with each shipment to support your quality assurance protocols.

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 the container tightly sealed under a dry inert atmosphere (e.g., nitrogen) to prevent moisture absorption and premature reaction. Keep away from heat and incompatible materials such as strong acids, bases, and oxidizing agents.

Specification

Item	Specification
Appearance	Clear, viscous liquid
Color (Gardner)	≤ 3
Hydroxyl Value (mg KOH/g)	Contact for details
Viscosity @ 25°C (cPs)	Contact for details
Isocyanate Content (NCO %)	Contact for details
Moisture (Karl Fischer)	≤ 0.05%
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.