Description

Ethanol, 2,2'-Oxybis-, Polymer With 2,4-Diisocyanato-1-Methylbenzene And .Alpha.-Hydro-.Omega.-Hydroxypoly(Oxy-1,4-Butanediyl) is a specialized polyurethane prepolymer or block copolymer, known for its unique combination of polyether and aromatic isocyanate segments. This engineered polymer is valued for its ability to impart enhanced flexibility, hydrolytic stability, and tailored mechanical properties to final formulations. It is primarily utilized by manufacturers in the coatings, adhesives, sealants, and elastomers (CASE) industries seeking high-performance, customizable material solutions.

Application

• High-Performance Coatings & Paints: Acts as a key resin component in polyurethane coatings requiring excellent weatherability, chemical resistance, and flexibility for industrial, automotive, and marine applications.
• Specialty Adhesives & Sealants: Serves as a prepolymer base for formulating flexible, durable adhesives and sealants with strong bonding strength and resistance to moisture and environmental stress.
• Elastomer & Rubber Modification: Used in the synthesis of castable or thermoplastic polyurethane elastomers (TPU) for parts demanding a balance of toughness, abrasion resistance, and low-temperature performance.
• Composite Materials & Binders: Functions as a polymeric binder or matrix resin in composite materials, enhancing interlaminar strength and durability.
• Textile & Leather Finishing: Employed in coatings for textiles and synthetic leather to provide a soft hand feel, water repellency, and durability.
• Encapsulation & Potting Compounds: Suitable for electronic encapsulation applications where moisture protection and flexible shock absorption are critical.

Basic Information

Item	Detail
Product Name	Ethanol, 2,2'-Oxybis-, Polymer With 2,4-Diisocyanato-1-Methylbenzene And .Alpha.-Hydro-.Omega.-Hydroxypoly(Oxy-1,4-Butanediyl)
CAS No.	65605-64-3
Molecular Formula	Complex Polymer / Mixture
Molecular Weight	Varies by grade and formulation
Synonyms	Poly(oxy-1,4-butanediyl), α-hydro-ω-hydroxy-, polymer with 2,2'-oxybis[ethanol] and 2,4-diisocyanato-1-methylbenzene; Poly(tetramethylene ether glycol)-based urethane prepolymer; PTMEG/TDI/Diethylene Glycol Copolymer; Polyurethane prepolymer based on poly(tetrahydrofuran), TDI, and diethylene glycol; Aromatic polyether urethane resin; Block copolymer of poly(tetramethylene oxide), toluene diisocyanate, and diethylene glycol; CAS 65605-64-3
EINECS	Contact for details

Quality Control

Our production of this advanced polymer adheres to strict quality management systems. Each batch is characterized for critical parameters including NCO content, viscosity, hydroxyl value, and residual monomer levels to ensure consistent performance in downstream applications. Certificates of Analysis (COA) detailing these specifications are provided with every shipment. We support compliance with relevant industry standards for raw materials used in specialty polymers.

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 room temperature (typically 15-25°C/59-77°F). Keep the container tightly sealed under a dry inert atmosphere (e.g., nitrogen blanket) to prevent moisture absorption and premature reaction. Isolate from strong oxidizers, acids, and bases.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid
NCO Content	Contact for details
Viscosity @ 25°C	Contact for details
Hydroxyl Value (mg KOH/g)	Contact for details
Specific Gravity @ 25°C	Contact for details
Water Content	< 0.05% (Karl Fischer)
Residual TDI Monomer	< 0.1% (HPLC)

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