Description

Poly(oxy-1,4-butanediyl), α-hydro-ω-hydroxy-, polymer with 1,3-diisocyanato-2-methylbenzene, 2,4-diisocyanato-1-methylbenzene and α-hydro-ω-hydroxypoly[ oxy(methyl-1,2-ethanediyl)] is a specialized polyurethane prepolymer or block copolymer, commonly known as a polyether-polyester polyol or a thermoplastic polyurethane (TPU) precursor. This compound is engineered to deliver a precise balance of flexibility, durability, and chemical resistance, making it a critical raw material for high-performance elastomers and coatings. It is primarily sought by manufacturers in the adhesives, sealants, coatings, and specialty plastics industries for formulating products that require enhanced mechanical properties and processing stability.

Application

• Thermoplastic Polyurethane (TPU) Elastomers: A key intermediate for producing flexible, abrasion-resistant TPUs used in automotive parts, industrial hoses, and cable sheathing.
• High-Performance Coatings & Adhesives: Serves as a building block for polyurethane-based coatings, sealants, and adhesives that demand excellent weatherability and adhesion to various substrates.
• Elastomeric Fibers (Spandex-type): Used in the synthesis of fibers requiring high elasticity and recovery for athletic and performance apparel.
• Medical Device Components: Employed in the formulation of biocompatible polyurethanes for catheters, tubing, and other flexible medical parts where purity and consistency are paramount.
• Footwear & Sporting Goods: Provides the foundational chemistry for durable, flexible soles, midsoles, and protective gear.
• Industrial Rollers & Gaskets: Imparts the necessary resilience and oil resistance for components used in printing, paper processing, and machinery.

Basic Information

Product Name	Poly(oxy-1,4-butanediyl), α-hydro-ω-hydroxy-, polymer with 1,3-diisocyanato-2-methylbenzene, 2,4-diisocyanato-1-methylbenzene and α-hydro-ω-hydroxypoly[ oxy(methyl-1,2-ethanediyl)]
CAS No.	64784-80-1
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Poly(tetramethylene ether) glycol-toluene diisocyanate-poly(propylene glycol) copolymer; PTMEG-TDI-PPG copolymer; Polyurethane prepolymer based on PTMEG, TDI, and PPG; α-Hydro-ω-hydroxypoly(oxy-1,4-butanediyl)-poly[oxy(methyl-1,2-ethanediyl)] polymer with toluene diisocyanate; Block copolymer of poly(tetramethylene oxide), poly(propylene oxide), and toluene diisocyanate; Thermoplastic polyurethane polyol; TPU polyol intermediate; Polyether-polyester polyol
EINECS	Contact for details

Quality Control

Our production of this polyurethane intermediate adheres to strict quality management systems to ensure batch-to-batch consistency and performance reliability. Key parameters such as hydroxyl value, isocyanate content, viscosity, and moisture are rigorously monitored. Certificates of Analysis (COA) detailing these specifications are provided with every shipment. We can support compliance with relevant industry frameworks, including ISO standards, upon request.

Storage

Preserve in a tightly closed container, protected from light. This material is hygroscopic (moisture-sensitive). Store in a cool, dry, well-ventilated area at room temperature (15-25°C/59-77°F). Keep containers tightly sealed under a dry inert atmosphere (e.g., nitrogen) to prevent moisture absorption and premature polymerization. Isolate from strong acids, bases, and oxidizing agents.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid
Identification (IR)	Conforms to structure
Hydroxyl Value (mg KOH/g)	Contact for details
Isocyanate Content (NCO %)	Contact for details
Viscosity @ 25°C (cP)	Contact for details
Moisture (Karl Fischer)	< 0.05%
Specific Gravity @ 25°C	Contact for details
Color (APHA)	< 100

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