Description

1,4-Butanediol, Polymer With α-Hydro-ω-Hydroxypoly[ Oxy(Methyl-1,2-Ethanediyl)] And 1,1'-Methylenebis[4-Isocyanatobenzene], Glycidol-Blocked is a specialized, blocked polyurethane prepolymer designed for high-performance applications. This advanced material offers a unique combination of stability and reactivity, enabling precise formulation control and enhanced shelf life. It is primarily utilized in industries requiring durable, high-quality polymer systems, such as advanced coatings, adhesives, and specialty elastomers.

Application

• High-Performance Coatings: Used as a key component in formulating durable, chemical-resistant, and weather-resistant industrial and protective coatings.
• Advanced Adhesives & Sealants: Serves as a prepolymer base for developing strong, flexible polyurethane adhesives and sealants with excellent bonding properties.
• Specialty Elastomers: Employed in the production of castable and thermoplastic polyurethane elastomers for demanding mechanical applications.
• Composite Materials: Acts as a matrix resin or binder in fiber-reinforced composites for the automotive and aerospace sectors.
• Encapsulation & Potting Compounds: Utilized in electronics and electrical industries for protective encapsulation due to its stable, blocked nature prior to curing.
• Industrial Rollers & Wheels: A critical raw material for manufacturing abrasion-resistant polyurethane rollers, wheels, and linings.

Basic Information

Product Name	1,4-Butanediol, Polymer With α-Hydro-ω-Hydroxypoly[ Oxy(Methyl-1,2-Ethanediyl)] And 1,1'-Methylenebis[4-Isocyanatobenzene], Glycidol-Blocked
CAS No.	129783-25-1
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Glycidol-blocked polyurethane prepolymer; Blocked polyurethane prepolymer based on MDI, PTMG, and BDO; Poly(tetramethylene ether) glycol, polymer with 1,4-butanediol and 4,4'-methylenebis(phenyl isocyanate), glycidol-blocked; MDI/PTMG/BDO prepolymer, glycidol-capped; Isocyanate-terminated prepolymer, blocked with glycidol; Thermolatent polyurethane prepolymer; PU prepolymer, blocked; Reactive polyurethane resin
EINECS	Contact for details

Quality Control

Our production of this blocked polyurethane prepolymer adheres to stringent quality protocols to ensure batch-to-batch consistency and performance reliability. Each lot is characterized for critical parameters including blocked isocyanate content, viscosity, hydroxyl value, and moisture content. Comprehensive Certificates of Analysis (COA) documenting these specifications are provided with every shipment to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed, moisture-proof container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (typically 15-25°C). This product is hygroscopic (moisture-sensitive) and light-sensitive; prolonged exposure to atmospheric moisture or direct light may affect its reactivity and shelf stability. Keep away from heat sources and incompatible materials.

Specification

Item	Specification
Appearance	Viscous liquid
Color	Pale yellow to amber
Blocked NCO Content	Contact for details
Viscosity @ 25°C	Contact for details
Hydroxyl Value (OH#)	Contact for details
Moisture Content	< 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.