Description

2-Oxepanone, polymer with 5-amino-1,3,3-trimethylcyclohexanemethanamine, 2-ethyl-2-(hydroxymethyl)-1,3-propanediol and 1,1'-methylenebis[4-isocyanatocyclohexane], Me Et ketone oxime-terminated is a specialized, high-performance blocked polyurethane prepolymer. This advanced material is engineered to provide exceptional stability and controlled reactivity, making it a critical component in formulating high-durability coatings and adhesives. It is primarily utilized by manufacturers in the automotive, industrial coatings, and specialty chemical sectors seeking reliable, shelf-stable intermediates for demanding applications.

Application

• High-Performance Industrial Coatings: As a key resin component in moisture-cure polyurethane coatings for metal, concrete, and plastic substrates, offering excellent chemical resistance and mechanical properties.
• Automotive Refinish & OEM Coatings: Used in primer, basecoat, and clearcoat formulations requiring superior gloss retention, scratch resistance, and weatherability.
• Adhesives and Sealants: Serves as a blocked prepolymer in one-component (1K) polyurethane adhesives, providing long pot life and curing upon exposure to atmospheric moisture.
• Elastomers and Casting Compounds: Employed in the production of durable polyurethane elastomers for industrial parts, rollers, and gaskets.
• Wood and Furniture Finishes: A vital ingredient in high-quality, low-VOC wood coatings that demand excellent clarity, hardness, and resistance to yellowing.
• Corrosion Protection Systems: Formulated into heavy-duty protective coatings for infrastructure, pipelines, and marine environments.

Basic Information

Product Name	2-Oxepanone, polymer with 5-amino-1,3,3-trimethylcyclohexanemethanamine, 2-ethyl-2-(hydroxymethyl)-1,3-propanediol and 1,1'-methylenebis[4-isocyanatocyclohexane], Me Et ketone oxime-terminated
CAS No.	129870-76-4
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Blocked aliphatic polyurethane prepolymer; MEKO-blocked HDI prepolymer; Oxime-terminated polycaprolactone polyurethane; Poly(ε-caprolactone) blocked with methyl ethyl ketoxime; Aliphatic polyurethane resin, blocked; HDI-based blocked prepolymer; Polyurethane, MeEt ketoxime-blocked; Isophorone diamine-based polyurethane prepolymer
EINECS	Contact for details

Quality Control

Our production of this blocked polyurethane prepolymer adheres to stringent quality management protocols to ensure batch-to-batch consistency and performance reliability. Each lot undergoes comprehensive analytical testing, including determination of NCO content, viscosity, solids content, and blocking agent efficiency. Certificates of Analysis (COA) documenting all critical parameters are provided with every 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). This product is hygroscopic (moisture-sensitive) and must be kept under a dry, inert atmosphere (e.g., nitrogen blanket) after opening to prevent premature reaction with atmospheric moisture. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid
Solids Content	≥ 70%
Viscosity (25°C)	2000 - 6000 mPa·s
Blocked NCO Content	5.0 - 7.0 %
Color (Gardner)	≤ 3
Identification (IR)	Conforms to standard

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