Description

Poly(Oxy-1,4-Butanediyl), .Alpha.-Hydro-.Omega.-Hydroxy-, Polymer With 1,1-Methylenebis4-Isocyanatocyclohexane CAS NO 52292-18-9 is a high-performance polyurethane prepolymer derived from poly(tetramethylene ether) glycol (PTMEG) and hydrogenated methylene diphenyl diisocyanate (H12MDI). This specialized polymer is engineered to deliver exceptional hydrolytic stability, low-temperature flexibility, and outstanding mechanical properties in demanding environments. It is a critical raw material for manufacturers in the elastomer, adhesive, sealant, and coating industries seeking durable, high-performance polyurethane systems.

Application

• High-Performance Elastomers: Used as a key prepolymer for manufacturing cast polyurethane (CPU) elastomers with superior abrasion resistance, tear strength, and dynamic performance, ideal for industrial rollers, wheels, and mining screens.
• Specialty Adhesives & Sealants: Serves as a base for formulating moisture-cure and two-component polyurethane adhesives and sealants that require excellent flexibility, adhesion, and chemical resistance.
• Protective & Functional Coatings: Incorporated into high-end polyurethane coating systems for industrial, marine, and automotive applications where durability, gloss retention, and weatherability are paramount.
• Medical Device Components: Utilized in the production of biocompatible and hydrolytically stable polyurethane parts for medical tubing, catheters, and other long-term implantable devices (subject to appropriate regulatory compliance).
• Fiber & Film Production: Acts as a precursor for spandex fibers and specialty polyurethane films that demand consistent quality and performance characteristics.
• Composite Materials: Employed in the matrix for composite materials, enhancing toughness and impact resistance in advanced material applications.

Basic Information

Product Name	Poly(Oxy-1,4-Butanediyl), .Alpha.-Hydro-.Omega.-Hydroxy-, Polymer With 1,1-Methylenebis4-Isocyanatocyclohexane
CAS No.	52292-18-9
Molecular Formula	(C4H8O)n·C15H22N2O2
Molecular Weight	Varies by grade (typically 1000-3000 g/mol for prepolymer)
Synonyms	PTMEG-H12MDI Prepolymer; Hydrogenated MDI-PTMEG Prepolymer; Poly(tetramethylene ether) glycol terminated with H12MDI; H12MDI-PTMEG Polyurethane Prepolymer; Aliphatic Polyether Urethane Prepolymer; Polyurethane Prepolymer based on PTMEG and H12MDI; 1,1'-Methylenebis(4-isocyanatocyclohexane), polymer with .alpha.-hydro-.omega.-hydroxypoly(oxy-1,4-butanediyl)
EINECS	Contact for details

Quality Control

Our production of this polyurethane prepolymer adheres to strict quality management systems, ensuring 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 assay, physical properties, and impurity profiles is provided with every shipment to support your quality assurance protocols.

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 temperatures recommended for the specific grade, typically between 15°C and 25°C. Use under a dry nitrogen atmosphere to prevent moisture absorption and premature curing. 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 (%)	3.0 - 6.0 (Grade dependent)
Viscosity @ 25°C (cP)	2,000 - 10,000 (Grade dependent)
Moisture (Karl Fischer)	≤ 0.05%
Specific Gravity @ 25°C	1.05 - 1.10

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