Description

Oxirane, Methyl-, Polymer With .Alpha.-Hydro-.Omega.-Hydroxypolyoxy(Methyl-1,2-Ethanediyl) And 1,1-Methylenebisisocyanatobenzene CAS NO 167883-19-4 is a specialized polyurethane prepolymer or polyol derivative, synthesized from propylene oxide, polyether polyols, and methylene diphenyl diisocyanate (MDI). This compound is valued for its role as a key reactive intermediate, offering tailored reactivity and physical properties for advanced polymer formulations. It is essential for manufacturers in the adhesives, sealants, coatings, and elastomers industries seeking to enhance product performance, durability, and processing characteristics.

Application

• High-Performance Polyurethane Adhesives & Sealants: Serves as a core prepolymer component for formulating structural adhesives, flexible sealants, and bonding agents with excellent adhesion and mechanical strength.
• Elastomer and Castable Urethane Production: Used in the synthesis of polyurethane elastomers for industrial wheels, rollers, gaskets, and impact-absorbing components.
• Protective & Decorative Coatings: Acts as a building block in coating resins, providing enhanced chemical resistance, flexibility, and weatherability for industrial and marine applications.
• Composite Materials and Binders: Functions as a reactive binder or matrix resin in composite materials, including fiber-reinforced plastics and foundry sand binders.
• Foam Systems: Can be utilized as a modified polyol in the formulation of specialized rigid or flexible polyurethane foam systems.
• Potting and Encapsulation Compounds: Ideal for creating durable, moisture-resistant potting compounds for electronic component protection.

Basic Information

Item	Details
Product Name	Oxirane, Methyl-, Polymer With .Alpha.-Hydro-.Omega.-Hydroxypolyoxy(Methyl-1,2-Ethanediyl) And 1,1-Methylenebisisocyanatobenzene
CAS No.	167883-19-4
Molecular Formula	Complex Polymer / Contact for details
Molecular Weight	Varies by grade / Contact for details
Synonyms	Polypropylene glycol, polymer with methyloxirane and methylenebis(phenyl isocyanate); MDI-terminated polypropylene oxide prepolymer; Polyurethane prepolymer based on PPG and MDI; Polyoxypropylene diol, polymer with propylene oxide and diphenylmethane diisocyanate; Propylene oxide-polypropylene glycol-MDI polymer; Isocyanate-terminated polyether prepolymer; Polyether urethane prepolymer; Reactive polyurethane intermediate
EINECS	Contact for details

Quality Control

Every batch of our Oxirane, Methyl-, Polymer With .Alpha.-Hydro-.Omega.-Hydroxypolyoxy(Methyl-1,2-Ethanediyl) And 1,1-Methylenebisisocyanatobenzene undergoes rigorous quality testing to ensure compliance with industry standards and batch-to-batch consistency. Our quality management system is designed to meet the stringent requirements of industrial polymer production. Certificates of Analysis (COA) detailing key parameters such as NCO content, viscosity, and hydroxyl value are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at temperatures recommended for the specific grade, typically between 15-25°C. This product is hygroscopic (moisture-sensitive) and must be protected from atmospheric moisture to prevent premature reaction and viscosity increase. Keep away from heat, sparks, and open flame. Separate from incompatible materials such as strong bases, acids, and alcohols.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid
Identification (IR)	Conforms to structure
NCO Content	As per grade (e.g., 5.0 - 15.0 %)
Viscosity @ 25°C	Grade-dependent (cP)
Hydroxyl Value	Grade-dependent (mg KOH/g)
Specific Gravity @ 25°C	1.05 - 1.10
Moisture (Karl Fischer)	≤ 0.05 %

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