Description

Oxirane, Methyl-, Polymer With Oxirane, Reaction Products With 2,4-Tdi Oxirane, Methyl-, Polymer With Oxirane, Reactionproducts With 2,4-Tdi CAS NO 71549-89-8 is a specialized polyether-polyurethane block copolymer derived from propylene oxide and ethylene oxide, terminated with toluene diisocyanate (TDI). This engineered polymer is valued for its unique combination of flexibility, chemical resistance, and tunable reactivity, making it a critical intermediate for high-performance formulations. It is primarily sought by manufacturers in the polyurethane, coatings, adhesives, and sealants industries seeking to enhance product durability and processing characteristics.

Application

• Polyurethane Elastomers & Foams: As a key polyol component for producing flexible and rigid foams with tailored density and mechanical properties.
• Industrial Coatings & Paints: Used to formulate high-performance protective coatings that offer excellent adhesion, chemical resistance, and weatherability.
• Adhesives & Sealants: Serves as a backbone polymer in construction and automotive sealants, providing enhanced flexibility and bond strength.
• Resin Modification: Acts as a reactive modifier for other polymer systems to improve impact resistance and processing.
• Encapsulation & Potting Compounds: Employed in electronics for protective potting materials due to its good dielectric properties and moisture resistance.
• Textile & Leather Finishing: Utilized in coatings and finishes to impart durability, water repellency, and a soft hand feel.

Basic Information

Product Name	Oxirane, Methyl-, Polymer With Oxirane, Reaction Products With 2,4-Tdi
CAS No.	71549-89-8
Molecular Formula	Contact for details
Molecular Weight	Variable (Polymer)
Synonyms	Poly(oxy(methyl-1,2-ethanediyl)), α-hydro-ω-hydroxy-, polymer with oxirane, reaction products with 2,4-TDI; Poly(propylene oxide)-co-poly(ethylene oxide) TDI adduct; PPO-PEO-TDI copolymer; Polyether polyol, TDI-terminated; Block copolymer of propylene oxide and ethylene oxide, TDI-capped; TDI-capped poly(alkylene glycol); Polyoxypropylene polyoxyethylene glycol TDI adduct; 2,4-Toluene diisocyanate adduct with poly(propylene oxide-co-ethylene oxide)
EINECS	Contact for details

Quality Control

Our production of this advanced polymer adheres to strict quality management protocols. Each batch is characterized for critical parameters including hydroxyl value, isocyanate content, viscosity, and molecular weight distribution to ensure batch-to-batch consistency and performance reliability. Certificates of Analysis (COA) documenting these specifications are available upon request, supporting 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). This product is hygroscopic (moisture-sensitive); containers must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect reactivity and properties. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid
Hydroxyl Value (mg KOH/g)	Contact for details
Isocyanate (NCO) Content (%)	Contact for details
Viscosity @ 25°C (cPs)	Contact for details
Water Content (%)	≤ 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.