Description

Poly(1,4-Butanediol), Tolylene 2,4-Diisocyanate Terminated CAS NO 9069-50-5 is a specialized polyurethane prepolymer, a key intermediate formed by the reaction of poly(1,4-butanediol) with tolylene 2,4-diisocyanate (TDI). This product is valued for its ability to impart flexibility, toughness, and excellent hydrolytic stability to final polyurethane systems. It is primarily sought by manufacturers in the adhesives, sealants, coatings, and elastomers industries for formulating high-performance, moisture-curing products.

Application

• Moisture-Curing Polyurethane Adhesives & Sealants: Serves as a core prepolymer for high-performance, one-component systems used in construction, automotive, and marine applications.
• Elastomer Production: Used as a building block for casting, molding, or extruding flexible and durable polyurethane elastomers.
• Protective & Decorative Coatings: A key component in formulating tough, chemical-resistant, and weatherable coatings for industrial floors, concrete, and metal substrates.
• Binder Systems: Employed in composite materials, foundry sands, and specialty binder applications requiring strong adhesion and flexibility.
• Footwear & Sporting Goods: Used in the production of soles, midsoles, and other components where a balance of comfort, durability, and performance is critical.
• Potting & Encapsulation Compounds: Provides excellent protection for electronic components against moisture, vibration, and environmental stress.

Basic Information

Item	Detail
Product Name	Poly(1,4-Butanediol), Tolylene 2,4-Diisocyanate Terminated
CAS No.	9069-50-5
Molecular Formula	(C4H10O2·C9H6N2O2)n
Molecular Weight	Varies (Polymer)
Synonyms	Poly(1,4-butanediol) TDI prepolymer; Poly(tetramethylene ether glycol) terminated with TDI; PTMEG-TDI prepolymer; Polyurethane prepolymer based on PTMEG and TDI; TDI-terminated poly(tetramethylene oxide); 2,4-Tolylene diisocyanate terminated poly(oxytetramethylene); Poly(tetramethylene oxide) bis(4-methylphenylcarbamate); Isocyanate-terminated polyether based on PTMEG
EINECS	Contact for details

Quality Control

Our production of Poly(1,4-Butanediol), Tolylene 2,4-Diisocyanate Terminated adheres to stringent quality protocols to ensure batch-to-batch consistency and performance reliability. Key parameters such as NCO content, viscosity, and residual monomer levels are rigorously monitored. A comprehensive Certificate of Analysis (COA) detailing all specifications is provided with each shipment to support your quality assurance processes.

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) and must be protected from atmospheric moisture to prevent premature curing. Keep containers tightly sealed under a dry inert gas (e.g., nitrogen) blanket when not in use.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid
NCO Content	3.0 - 6.0 % (Typical)
Viscosity @ 25°C	2,000 - 15,000 mPa·s
Specific Gravity @ 25°C	1.05 - 1.10
Residual TDI Monomer	< 0.5 %
Moisture (Karl Fischer)	< 0.05 %

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