Description

2-Oxepanone, Polymer With 1,4-Butanediol And 1,3-Diisocyanatomethylbenzene, 2-Hydroxyethyl Acrylate-Blocked is a specialized, blocked polyurethane prepolymer designed for high-performance coating and adhesive formulations. This advanced material provides a unique balance of chemical resistance and controlled reactivity, enabling the development of durable, cross-linked polymer networks. It is essential for industrial manufacturers seeking to enhance product longevity and performance under demanding conditions, particularly in sectors like automotive, industrial maintenance, and specialty plastics.

Application

• High-Performance Industrial Coatings: Used as a key resin component in polyurethane-based coatings for metal, concrete, and plastic substrates, offering excellent weatherability, chemical resistance, and mechanical durability.
• Adhesives and Sealants: Serves as a base polymer in formulating structural and elastic adhesives, where its blocked isocyanate groups provide stable one-component systems that cure upon heating.
• Automotive OEM and Refinish: Employed in primer, basecoat, and clearcoat formulations to achieve superior gloss retention, scratch resistance, and protection against fuels and lubricants.
• Plastic Modification and Composites: Acts as a compatibilizer or toughening agent in polymer blends and fiber-reinforced composites to improve impact strength and interfacial adhesion.
• Wire and Cable Insulation: Utilized in coatings for electrical wires to provide flexible, abrasion-resistant, and flame-retardant properties.
• Marine and Protective Coatings: Formulated into anti-corrosive paints and linings for ships, offshore platforms, and infrastructure due to its resistance to saltwater and harsh environments.

Basic Information

Product Name	2-Oxepanone, Polymer With 1,4-Butanediol And 1,3-Diisocyanatomethylbenzene, 2-Hydroxyethyl Acrylate-Blocked
CAS No.	79771-07-6
Molecular Formula	(C6H10O2 · C4H10O2 · C10H8N2O2 · C5H8O2)n
Molecular Weight	Polymer - Contact for details
Synonyms	Poly(ε-caprolactone-co-1,4-butanediol) blocked with 2-hydroxyethyl acrylate and 1,3-diisocyanatomethylbenzene; Acrylate-blocked polyurethane prepolymer; HEA-blocked PCL/TDI/BD prepolymer; Blocked polyurethane resin based on caprolactone, butanediol, and meta-tetramethylxylene diisocyanate (m-TMXDI); 2-Hydroxyethyl acrylate capped poly(caprolactone-b-urethane); Thermally curable polyurethane oligomer; Reactive polymer for coatings; CAS 79771-07-6
EINECS	Contact for details

Quality Control

Our production of this blocked prepolymer adheres to strict quality management systems to ensure batch-to-batch consistency and performance reliability. Key parameters such as blocked isocyanate content, viscosity, solids content, and color are rigorously monitored. A comprehensive Certificate of Analysis (COA) detailing specific test results is provided with each shipment to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at temperatures between 15°C and 25°C (59°F and 77°F). Keep away from strong acids, organic solvents, and sources of heat or ignition to maintain product stability and prevent premature reaction.

Specification

Item	Specification
Appearance	Viscous liquid to semi-solid
Color (Gardner)	≤ 3
Solids Content	≥ 98.0 %
Viscosity (25°C)	Contact for details
Blocked NCO Content	Contact for details
Acid Value	≤ 1.0 mg KOH/g
Hydroxyl Value	Contact for details
Identification (IR)	Conforms to structure

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