Description

Poly(Oxytetramethylene Glycol), Polymer With Diethylene Glycol And Methylene-Di-p-Phenylene Isocyanate is a high-performance polyurethane prepolymer or elastomer. This specialized polymer is engineered to deliver a unique balance of flexibility, durability, and chemical resistance, making it a critical raw material for advanced material formulations. It is essential for manufacturers in the adhesives, sealants, coatings, and specialty elastomers industries seeking to enhance product performance.

Application

• High-Performance Elastomers: Used as a key component in the synthesis of polyurethane (PU) and polyurethane-urea elastomers for demanding applications requiring excellent mechanical properties and hydrolytic stability.
• Specialty Adhesives & Sealants: Serves as a prepolymer base for formulating durable, flexible, and chemically resistant adhesives and sealants used in construction, automotive, and aerospace assembly.
• Advanced Coatings: Incorporated into protective and functional coating systems to improve abrasion resistance, flexibility, and longevity on substrates like metals, concrete, and composites.
• Medical Device Components: Utilized in the production of biocompatible polyurethane parts for medical tubing, catheters, and other devices where flexibility and strength are paramount.
• Industrial Rollers & Gaskets: A fundamental material for casting or molding industrial components that must withstand repeated stress, oils, and solvents.
• Footwear and Sporting Goods: Found in the midsoles, soles, and other components of high-end footwear and sports equipment due to its excellent cushioning and rebound properties.

Basic Information

Product Name	Poly(Oxytetramethylene Glycol), Polymer With Diethylene Glycol And Methylene-Di-p-Phenylene Isocyanate
CAS No.	64078-69-9
Molecular Formula	(C4H8O)n·(C4H10O3)·(C15H10N2O2)
Molecular Weight	Varies (Polymer)
Synonyms	Poly(tetramethylene ether glycol)-co-diethylene glycol polymer with methylenedi-p-phenylene isocyanate; PTMEG-co-DEG polymer with MDI; Polyurethane prepolymer based on PTMEG, DEG, and MDI; 4,4'-Methylenebis(phenyl isocyanate), polymer with α-hydro-ω-hydroxypoly(oxy-1,4-butanediyl) and 2,2'-oxybis[ethanol]; MDI/PTMEG/DEG prepolymer; Polyether-based urethane prepolymer; Thermoplastic polyurethane (TPU) precursor; Reactive polyurethane resin.
EINECS	Contact for details

Quality Control

Our production of this polyurethane prepolymer adheres to strict quality management systems to ensure batch-to-batch consistency and performance reliability. Key parameters such as NCO content, viscosity, and moisture levels are rigorously monitored. A comprehensive Certificate of Analysis (COA) detailing all relevant specifications is provided with every shipment to support your quality assurance protocols.

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). Due to its hygroscopic (moisture-sensitive) nature, containers must be kept tightly sealed when not in use to prevent moisture absorption, which can affect reactivity and properties. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid
Identification (IR)	Conforms to structure
NCO Content	Contact for details
Viscosity @ 25°C	Contact for details
Moisture (Karl Fischer)	< 0.05%
Specific Gravity @ 25°C	Contact for details
Color (Gardner)	≤ 3

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