Description

1,2-Propanediol, Polymer With 1,1-Methylenebis4-Isocyanatobenzene, Methyloxirane And Oxirane CAS NO 68083-75-0 is a specialized polyether polyol prepolymer, synthesized from propylene glycol, diphenylmethane diisocyanate (MDI), propylene oxide, and ethylene oxide. This chemistry provides a versatile building block with terminal isocyanate groups, offering excellent adhesion, flexibility, and chemical resistance for demanding formulations. It is essential for manufacturers in the polyurethane, coatings, and adhesive industries seeking to enhance product performance and durability.

Application

• Polyurethane Elastomers: As a key prepolymer component for producing high-performance cast elastomers with superior mechanical properties.
• Industrial Coatings & Sealants: Used in formulating protective coatings, linings, and sealants that require excellent abrasion and chemical resistance.
• Adhesives & Binders: Serves as a reactive intermediate in the production of structural and specialty adhesives.
• Flexible Foams: Can be utilized in the manufacture of tailored flexible polyurethane foams for automotive and furniture applications.
• Composite Materials: Acts as a matrix resin or modifier in fiber-reinforced plastics and other composite systems.
• Waterproofing Membranes: A critical raw material in the synthesis of durable, flexible waterproofing membranes for construction.

Basic Information

Product Name	1,2-Propanediol, Polymer With 1,1-Methylenebis4-Isocyanatobenzene, Methyloxirane And Oxirane
CAS No.	68083-75-0
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Poly(oxy(methyl-1,2-ethanediyl)), α-hydro-ω-hydroxy-, polymer with 1,1'-methylenebis[4-isocyanatobenzene] and oxirane; Propylene glycol polyoxypropylene polyoxyethylene ether polymer with MDI; MDI-based polyether polyol prepolymer; Polyoxypropylene polyoxyethylene glycol, polymer with diphenylmethane diisocyanate; Polyol-MDI prepolymer; Polyether polyol terminated with isocyanate; Block copolymer of propylene oxide, ethylene oxide, and MDI; Isocyanate-terminated poly(propylene glycol-co-ethylene glycol)
EINECS	Contact for details

Quality Control

Our production of this polyol prepolymer adheres to strict quality management systems. Every batch is tested against critical parameters including isocyanate (NCO) content, viscosity, and hydroxyl value to ensure consistency and performance. Certificates of Analysis (COA) documenting these specifications are available upon request to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed, moisture-proof container under a dry, inert atmosphere (e.g., nitrogen blanket). Store in a cool, dry, well-ventilated area away from direct heat and light sources. Recommended storage temperature is between 15°C and 25°C. Keep away from moisture, amines, alcohols, and other compounds containing active hydrogen to prevent premature reaction and gelation.

Specification

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

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