Description

1,2-Propanediol, Polymer With 1,2-Ethanediol And 1,1-Methylenebis4-Isocyanatobenzene is a specialized polyurethane prepolymer derived from propylene glycol, ethylene glycol, and MDI (4,4'-methylenediphenyl diisocyanate). This compound is valued for its role as a versatile building block in polymer synthesis, offering tailored reactivity and physical properties. It is primarily utilized by manufacturers in the coatings, adhesives, sealants, and elastomers (CASE) industries, as well as in advanced material research and development.

Application

• Polyurethane Elastomers: Serves as a key prepolymer component for producing high-performance elastomers with specific hardness, flexibility, and chemical resistance.
• Industrial Coatings & Paints: Used in formulating durable, protective coatings for metals, concrete, and other substrates, offering excellent adhesion and weathering resistance.
• Adhesives & Sealants: Acts as a reactive intermediate in the production of polyurethane-based adhesives and sealants for construction, automotive, and packaging applications.
• Resin Modification: Employed to modify the properties of other polymer systems, enhancing toughness, crosslink density, or compatibility.
• Fiber & Textile Treatments: Utilized in coatings and finishes for technical textiles to impart water repellency, durability, or specific functional properties.
• Composite Materials: Functions as a matrix resin or modifier in the manufacture of fiber-reinforced composites for automotive and aerospace components.

Basic Information

Product Name	1,2-Propanediol, Polymer With 1,2-Ethanediol And 1,1-Methylenebis4-Isocyanatobenzene
CAS No.	87368-71-6
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Poly(oxy-1,2-ethanediyl), α-hydro-ω-hydroxy-, polymer with 1,2-propanediol and 1,1'-methylenebis[4-isocyanatobenzene]; Propylene Glycol and Ethylene Glycol Copolymer with MDI; MDI-based Polyurethane Prepolymer; Polyurethane Prepolymer from PG, EG, and MDI; 4,4'-MDI Propylene Glycol Ethylene Glycol Polymer; Polyether Polyol-MDI Adduct; Copolymer of 1,2-Propanediol, 1,2-Ethanediol, and Bis(4-isocyanatophenyl)methane
EINECS	Contact for details

Quality Control

Our products undergo rigorous quality testing to ensure compliance with industry standards. Certificates of Analysis (COA) are available upon request, detailing key parameters such as NCO content, viscosity, and moisture levels. We adhere to strict in-process controls to guarantee batch-to-batch consistency and performance reliability for your formulations.

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 / 59-77°F). This material is hygroscopic (moisture-sensitive). Keep container tightly sealed under a dry inert atmosphere (e.g., nitrogen) to prevent moisture absorption and premature reaction. Isolate from sources of heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid
Identification (IR)	Conforms
NCO Content	Contact for details
Viscosity (25°C)	Contact for details
Moisture (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.