Description

1,3-Propanediol, 2-ethyl-2-(hydroxymethyl)-, polymer with 1,3-diisocyanatomethylbenzene and .alpha.-hydro-.omega.-hydroxypolyoxy(methyl-1,2-ethanediyl), Me Et ketone oxime-blocked is a specialized blocked polyurethane prepolymer designed for high-performance coating systems. This product matters for formulators seeking to create one-component (1K) polyurethane coatings that cure upon heating, releasing the blocking agent to allow cross-linking. Industries that need it include automotive OEM and refinish, industrial maintenance, and coil coating, where durable, chemical-resistant finishes are critical.

Application

• One-Component (1K) Polyurethane Coatings: Serves as a key resin component that cures at elevated temperatures, offering excellent shelf stability.
• Automotive OEM and Refinish Paints: Used in clearcoats and pigmented topcoats requiring high gloss, durability, and weatherability.
• Industrial Maintenance Coatings: Provides corrosion and chemical resistance for protective coatings on steel structures, pipelines, and industrial equipment.
• Coil Coatings: Formulated into coatings for pre-coated metal sheets used in construction and appliances.
• Plastic Coatings: Enhances adhesion and provides a hard, scratch-resistant finish on automotive interior parts and consumer electronics.
• Adhesives and Sealants: Imparts flexibility and strong bonding characteristics in heat-curable formulations.
• Wire and Cable Enamels: Used as an insulating coating that provides thermal stability and mechanical protection.

Basic Information

Product Name	1,3-Propanediol, 2-ethyl-2-(hydroxymethyl)-, polymer with 1,3-diisocyanatomethylbenzene and .alpha.-hydro-.omega.-hydroxypolyoxy(methyl-1,2-ethanediyl), Me Et ketone oxime-blocked
CAS No.	68081-92-5
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Blocked polyurethane prepolymer; MEKO-blocked polyurethane resin; Oxime-blocked polyisocyanate; Trimethylolpropane (TMP)-based blocked PU prepolymer; Polyether-based blocked isocyanate; 1K PU resin; Thermosetting polyurethane resin; Blocked HDI polyurethane (based on common structure inference); Benzene, 1,3-diisocyanatomethyl-, polymer with .alpha.-hydro-.omega.-hydroxypoly(oxy-1,2-ethanediyl) and 2-ethyl-2-(hydroxymethyl)-1,3-propanediol, oxime-blocked
EINECS	Contact for details

Quality Control

Our blocked polyurethane prepolymers are manufactured under strict quality management systems. Each batch undergoes rigorous testing for critical parameters including blocked isocyanate content, viscosity, solids content, color, and deblocking temperature to ensure consistent performance in your formulations. Certificates of Analysis (COA) documenting full specifications are available upon request.

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 reaction and gelation. Keep away from heat and open flame.

Specification

Item	Specification
Appearance	Clear, viscous liquid
Color (Gardner)	≤ 3
Solids Content	70 ± 2 %
Viscosity (at 25°C)	3000 - 6000 mPa·s
Blocked NCO Content	8.0 - 10.0 %
Deblocking Temperature	Approx. 130 - 150 °C
Specific Gravity (25°C)	1.05 - 1.10
Flash Point	> 100 °C

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