Description

1,4-Butanediol, Polymer With 1,3-Diisocyanatomethylbenzene And .Alpha.-Hydro-.Omega.-Hydroxypoly(Oxy-1,4-Butanediyl), Me Et Ketone Oxime-Blocked is a specialized blocked polyurethane prepolymer designed for controlled reactivity in high-performance coating and adhesive systems. This compound matters for formulators seeking enhanced pot life and one-component stability, which de-blocks upon heating to form durable, cross-linked networks. It is primarily needed by manufacturers in the automotive, industrial maintenance coatings, and specialty adhesive sectors who require reliable, high-quality raw materials for demanding applications.

Application

• One-Component (1K) Polyurethane Coatings: As a blocked isocyanate crosslinker in high-bake industrial finishes for automotive OEM, refinish, and coil coating applications.
• Thermally-Cured Adhesives and Sealants: Providing excellent adhesion and chemical resistance in assembly and bonding applications for electronics, aerospace, and construction.
• Wire and Cable Enamels: Used in the formulation of insulating coatings that require thermal curing for enhanced electrical and mechanical properties.
• Powder Coatings: Acting as a crosslinking agent in thermosetting powder coatings, offering good flow and film properties upon curing.
• Industrial Maintenance Paints: For protective coatings on steel structures, pipelines, and machinery that demand durability and corrosion resistance.
• Textile and Leather Finishes: Imparting water repellency, abrasion resistance, and flexibility to technical textiles and synthetic leather.

Basic Information

Product Name	1,4-Butanediol, Polymer With 1,3-Diisocyanatomethylbenzene And .Alpha.-Hydro-.Omega.-Hydroxypoly(Oxy-1,4-Butanediyl), Me Et Ketone Oxime-Blocked
CAS No.	68910-18-9
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Blocked Polyurethane Prepolymer; MEKO-blocked Polyurethane; Butanediol/Diisocyanatomethylbenzene/Poly(tetramethylene ether) glycol Blocked Prepolymer; Oxime-blocked Polyurethane Resin; Thermally Reactive Polyurethane Crosslinker; TDI/PolyTHF Blocked Prepolymer; Methyl Ethyl Ketoxime-blocked Polyisocyanate; Urethane Crosslinker, Blocked
EINECS	Contact for details

Quality Control

Our production of this blocked polyurethane prepolymer adheres to strict quality management systems to ensure batch-to-batch consistency and performance reliability. Each lot is characterized for critical parameters including blocking agent content, NCO equivalent weight, viscosity, and solvent content. Comprehensive Certificates of Analysis (COA) documenting these specifications are available upon request to support your quality assurance and regulatory needs.

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 moisture ingress, which can lead to premature de-blocking or gelation. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Clear, viscous liquid
Color (Gardner)	≤ 3
Solid Content	70 - 75%
Viscosity (at 25°C)	2000 - 5000 mPa·s
NCO Equivalent Weight (on solids)	Contact for details
Blocked NCO Content	Contact for details
Solvent (Typical Xylene/Butyl acetate)	Balance

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