Description

1,3-Propanediol, 2-Ethyl-2-(Hydroxymethyl)-, Polymer With 1,3-Diisocyanatomethylbenzene, Me Et Ketone Oxime-Blocked is a specialized blocked polyisocyanate prepolymer, a key intermediate for formulating high-performance, single-component polyurethane coatings and adhesives. This product matters because it provides a latent curing mechanism, offering excellent shelf stability and one-component convenience while curing to form durable, chemical-resistant polyurethane networks upon heating. Industrial formulators in the coatings, adhesives, sealants, and elastomers (CASE) sectors need it to develop products for automotive, industrial maintenance, and plastic substrate applications.

Application

• Single-Component (1K) Polyurethane Coatings: As a blocked crosslinker in heat-curable industrial finishes for metals, plastics, and composites.
• Wire Enamels and Magnet Wire Coatings: Providing thermal cure properties for electrical insulation applications.
• Adhesives and Sealants: Formulating high-strength, heat-activated bonding agents for automotive and assembly applications.
• Powder Coatings: Serving as a crosslinking agent that remains stable during powder manufacture and storage, then cures during the baking process.
• Industrial Maintenance Coatings: For protective coatings on pipelines, structural steel, and chemical processing equipment requiring chemical resistance.
• Can and Coil Coatings: As a component in coatings for food/beverage cans and pre-coated metal coils.
• Textile and Leather Finishes: Imparting durability and water resistance to synthetic leather and technical textiles.

Basic Information

Item	Detail
Product Name	1,3-Propanediol, 2-Ethyl-2-(Hydroxymethyl)-, Polymer With 1,3-Diisocyanatomethylbenzene, Me Et Ketone Oxime-Blocked
CAS No.	68910-07-6
Molecular Formula	Complex Polymer (Contact for details)
Molecular Weight	Varies by grade (Contact for details)
Synonyms	Blocked HDI Trimer (based on TMP); Oxime-blocked polyisocyanate; MEKO-blocked polyisocyanate prepolymer; Blocked aliphatic polyisocyanate; TMP/HDI-based blocked crosslinker; Methyl ethyl ketoxime-blocked HDI polymer; 1,3-Bis(isocyanatomethyl)benzene polymer with 2-ethyl-2-(hydroxymethyl)-1,3-propanediol, oxime-blocked; Blocked polyfunctional isocyanate curing agent.
EINECS	Contact for details

Quality Control

Our production of this blocked polyisocyanate adheres to strict quality management systems. Every batch is characterized for critical parameters including blocked isocyanate content, viscosity, solids content, color, and deblocking temperature to ensure consistent performance in your formulations. A comprehensive Certificate of Analysis (COA) detailing these specifications is provided with each shipment to guarantee traceability and compliance with your technical requirements.

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 bases and incompatible organic solvents. The container must be kept tightly sealed to prevent moisture absorption, which can lead to premature reaction.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Solids Content	70 - 75% (Typical)
Viscosity (at 25°C)	2000 - 5000 mPa·s (Typical)
Blocked NCO Content	10.0 - 12.0 % (Typical)
Color (Gardner)	≤ 2
Deblocking Temperature	130 - 150°C (Onset)
Solvent	Ethyl acetate / Xylene blend

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