Description

1,4-Butanediol, polymer with 1,3-diisocyanatomethylbenzene, 2-ethyl-2-(hydroxymethyl)-1,3-propanediol, .alpha.-hydro- .omega.-hydroxypoly[oxy(methyl-1,2-ethanediyl)] and 1,2-propanediol is a specialized polyurethane prepolymer or polyol blend, designed for high-performance applications. This engineered polymer is valued for its ability to impart excellent flexibility, toughness, and chemical resistance to final cured materials. It is a critical raw material for formulators and manufacturers in the coatings, adhesives, sealants, and elastomers (CASE) industries seeking to develop advanced polyurethane systems.

Application

• High-Performance Polyurethane Coatings: Used as a key component in formulating durable, flexible, and chemical-resistant protective coatings for industrial flooring, marine applications, and automotive finishes.
• Elastomer and Sealant Production: Serves as a base polymer for manufacturing flexible cast elastomers, gaskets, and high-strength sealants with excellent weatherability.
• Adhesive Formulations: Provides strong bonding characteristics and flexibility in structural and assembly adhesives for composites, plastics, and metals.
• Specialty Resins and Binders: Employed in the synthesis of tailored resin systems for composite materials, offering enhanced impact resistance and adhesion.
• Potting and Encapsulation Compounds: Used in electronics and electrical applications to create protective, flexible potting materials that shield components from moisture and vibration.

Basic Information

Item	Detail
Product Name	1,4-Butanediol, polymer with 1,3-diisocyanatomethylbenzene, 2-ethyl-2-(hydroxymethyl)-1,3-propanediol, .alpha.-hydro- .omega.-hydroxypoly[oxy(methyl-1,2-ethanediyl)] and 1,2-propanediol
CAS No.	63704-43-8
Molecular Formula	Complex Polymer Mixture
Molecular Weight	Variable (Polymer Blend)
Synonyms	Polyurethane prepolymer based on 1,4-butanediol and TMXDI; Polyol blend with TMXDI; Poly(tetramethylene ether) glycol-TMXDI copolymer; TMXDI-based polyurethane polyol; Polyether polyol modified with 1,3-bis(isocyanatomethyl)benzene; Trimethylxylylene diisocyanate (TMXDI) polyol adduct; Hydroxyl-terminated polyurethane prepolymer; CAS 63704-43-8 polymer
EINECS	Contact for details

Quality Control

Our production of this advanced polymer adheres to strict quality management systems to ensure batch-to-batch consistency and performance reliability. Key parameters such as hydroxyl value (OH#), viscosity, isocyanate content (NCO%), and moisture content are rigorously monitored. Certificates of Analysis (COA) detailing these specifications are provided with every shipment to support your quality assurance 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 / 59-77°F). This product is hygroscopic (moisture-sensitive); containers must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product performance. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Clear to slightly hazy viscous liquid
Color (Gardner)	≤ 3
Hydroxyl Value (OH#)	Contact for details
Viscosity @ 25°C	Contact for details
Isocyanate Content (NCO%)	< 0.5% (typical for polyol form)
Moisture Content (Karl Fischer)	< 0.05% w/w
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.