Description

1,4-Butanediol Polymer With 1,3-Diisocyanatomethylbenzene,α-Hydro-ω-Hydroxypoly(Oxy-1,4-Butanediyl) And α-Hydro-ω-Hydroxypoly[Oxy(Methyl-1,2-Ethanediyl)] is a specialized polyurethane prepolymer or block copolymer, designed to deliver exceptional mechanical properties, chemical resistance, and tailored reactivity. This advanced material is critical for formulators seeking to enhance the performance and durability of high-end polymer systems. It is primarily utilized by manufacturers in the adhesives, sealants, coatings, and elastomers industries where precise polymer architecture is required.

Application

• High-Performance Polyurethane Adhesives & Sealants: Serves as a key prepolymer component for formulating structural adhesives with superior bond strength and flexibility.
• Elastomer and Coating Systems: Used in the production of durable, abrasion-resistant polyurethane elastomers and protective coatings for industrial and automotive applications.
• Thermoplastic Polyurethane (TPU) Modification: Acts as a modifier or compatibilizer to improve the processing characteristics and final properties of TPU compounds.
• Reactive Hot-Melt Adhesives: A fundamental building block for moisture-curing hot-melt adhesives that combine initial tack with final cured strength.
• Encapsulants and Potting Compounds: Provides the polymer backbone for resilient, waterproof encapsulating materials used in electronics and construction.
• Fiber and Fabric Coatings: Imparts water resistance, durability, and flexibility to technical textiles and non-wovens.

Basic Information

Item	Detail
Product Name	1,4-Butanediol Polymer With 1,3-Diisocyanatomethylbenzene,α-Hydro-ω-Hydroxypoly(Oxy-1,4-Butanediyl) And α-Hydro-ω-Hydroxypoly[Oxy(Methyl-1,2-Ethanediyl)]
CAS No.	139655-10-0
Molecular Formula	Contact for details
Molecular Weight	Contact for details (Polymer, variable)
Synonyms	Polyurethane prepolymer based on 1,4-butanediol and 1,3-diisocyanatomethylbenzene; Block copolymer of PTMO, PEG, and TDI; Poly(tetramethylene oxide)-poly(ethylene glycol)-toluene diisocyanate copolymer; PTMO-PEG-TDI copolymer; Poly(oxy-1,4-butanediyl)-block-poly[oxy(methyl-1,2-ethanediyl)]-co-1,3-diisocyanatomethylbenzene; Hydroxyl-terminated polyether-urethane prepolymer; Reactive polyurethane oligomer
EINECS	Contact for details

Quality Control

Our production of this advanced polymer adheres to strict quality management systems. Every batch is characterized for critical parameters including NCO content, hydroxyl value, viscosity, and moisture content to ensure consistent performance in downstream formulations. Certificates of Analysis (COA) documenting these specifications are available upon request, providing full traceability and compliance assurance for your quality 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). This product is hygroscopic (moisture-sensitive). Ensure containers are sealed under a dry atmosphere (e.g., nitrogen) after opening to prevent moisture absorption and premature reaction, which can affect product performance.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid
Identification (IR)	Conforms to structure
NCO Content	Contact for details
Hydroxyl Value (mg KOH/g)	Contact for details
Viscosity @ 25°C (cP)	Contact for details
Moisture 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.