Description

1,2,3-Propanetriol, Polymer With 1,1'-Methylenebis[4-Isocyanatobenzene] And Methyloxirane is a specialized polyurethane prepolymer derived from glycerol, methylene diphenyl diisocyanate (MDI), and propylene oxide. This compound is engineered to deliver enhanced mechanical properties, chemical resistance, and tailored reactivity for advanced material formulations. It is a critical raw material for manufacturers in the coatings, adhesives, sealants, and elastomers (CASE) industries, as well as for producing high-performance polyurethane foams and composites.

Application

• High-Performance Coatings & Paints: Used as a binder or crosslinker to formulate durable, chemical-resistant, and flexible protective coatings for industrial, automotive, and marine applications.
• Adhesives & Sealants: Serves as a key component in structural and elastic adhesives, providing strong bonding, flexibility, and resistance to environmental stress.
• Elastomer Production: Acts as a prepolymer for manufacturing cast, molded, or thermoplastic polyurethane elastomers with excellent abrasion resistance and tensile strength.
• Rigid & Flexible Foams: Utilized in the formulation of polyurethane foams for insulation, cushioning, and packaging, offering controlled density and cell structure.
• Composite Materials: Incorporated as a matrix resin to enhance the properties of fiber-reinforced composites used in aerospace, automotive, and construction.
• Industrial Encapsulants & Potting Compounds: Provides excellent electrical insulation and environmental protection for electronic components.

Basic Information

Product Name	1,2,3-Propanetriol, Polymer With 1,1'-Methylenebis[4-Isocyanatobenzene] And Methyloxirane
CAS No.	28326-20-7
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Glycerol-MDI-Propylene Oxide Polymer; Polyurethane Prepolymer from Glycerol, MDI, and PO; Glycerol initiated poly(propylene oxide)-MDI prepolymer; MDI-Glycerol Propoxylate Adduct; Polyoxypropylene triol-MDI adduct; Propoxylated Glycerol-MDI Prepolymer; Polyether triol-MDI prepolymer; Oligomeric urethane based on glycerol, MDI, and propylene oxide.
EINECS	Contact for details

Quality Control

Our production of this polyurethane prepolymer adheres to strict quality management systems. Every batch undergoes comprehensive analytical testing to ensure consistent performance, including measurement of NCO content, viscosity, hydroxyl value, and moisture content. Certificates of Analysis (COA) documenting all relevant specifications are available upon request to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. This material is hygroscopic (moisture-sensitive) and must be stored under dry conditions, preferably under a dry inert atmosphere (e.g., nitrogen blanket) to prevent premature reaction and viscosity increase. Recommended storage temperature is between 15°C and 25°C in a cool, dry, well-ventilated area away from heat sources and incompatible materials such as water, alcohols, amines, and strong acids/bases.

Specification

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