Description

Propanol, [(1-methyl-1,2-ethanediyl)bis(oxy)]bis-, polymer with 1,1'-methylenebis[isocyanatobenzene] and methyloxirane polymer with oxirane ether with 1,2,3-propanetriol (3:1) is a specialized polyurethane polyol prepolymer, engineered to deliver high-performance characteristics in demanding formulations. This compound matters for its role as a key reactive intermediate, providing enhanced adhesion, flexibility, and chemical resistance to final products. It is primarily needed by manufacturers in the coatings, adhesives, sealants, and elastomers (CASE) industries seeking to improve the durability and performance of their polyurethane systems.

Application

• High-Performance Coatings: Used as a building block in polyurethane coatings for industrial maintenance, automotive refinish, and protective marine applications, offering excellent weatherability and corrosion resistance.
• Adhesives & Sealants: Serves as a prepolymer in formulating structural adhesives, flexible sealants, and potting compounds, providing strong bonding and elasticity.
• Elastomers: A critical component in the production of cast, thermoplastic, and millable polyurethane elastomers for wheels, rollers, and industrial parts requiring abrasion resistance.
• Composite Materials: Used in resin formulations for fiber-reinforced plastics (FRP) and composite binders, enhancing mechanical strength and interfacial adhesion.
• Waterproofing Membranes: Formulated into liquid-applied waterproofing and roofing systems due to its excellent hydrolytic stability and seamless film formation.
• Flexible Foams: Can be utilized in the formulation of specialized, high-resilience flexible polyurethane foams.

Basic Information

Product Name	Propanol, [(1-methyl-1,2-ethanediyl)bis(oxy)]bis-, polymer with 1,1'-methylenebis[isocyanatobenzene] and methyloxirane polymer with oxirane ether with 1,2,3-propanetriol (3:1)
CAS No.	121028-81-7
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Polyurethane polyol prepolymer; MDI-based polyol prepolymer; Polyoxypropylene triol, polymer with diphenylmethane diisocyanate; Polyether polyol, polymer with methylenediphenyl diisocyanate; Polypropylene glycol-toluene diisocyanate polymer; PPG-MDI prepolymer; Polyol modified with 4,4'-methylenebis(phenyl isocyanate); Oxirane, methyl-, polymer with oxirane, ether with 1,2,3-propanetriol (3:1), polymer with 1,1'-methylenebis[4-isocyanatobenzene] and 2,2'-(1-methylethylidene)bis[4,1-phenylenecarbamoyloxy(2-hydroxy-3,1-propanediyl)] ether
EINECS	Contact for details

Quality Control

Our Propanol, [(1-methyl-1,2-ethanediyl)bis(oxy)]bis-, polymer with 1,1'-methylenebis[isocyanatobenzene] and methyloxirane polymer with oxirane ether with 1,2,3-propanetriol (3:1) is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure consistency in key parameters such as hydroxyl value, isocyanate content, viscosity, and moisture. 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 container, protected from light. This material is hygroscopic (moisture-sensitive). Store in a cool, dry, and well-ventilated area at room temperature (15-25°C/59-77°F). Keep the container tightly sealed when not in use to prevent moisture absorption and contamination. Store away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Viscous liquid
Color (Gardner)	≤ 3
Hydroxyl Value (mg KOH/g)	Contact for details
Viscosity (cPs @ 25°C)	Contact for details
Water 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.