Description

Poly[Oxy(Methyl-1,2-Ethanediyl)], α,α',α''- 1,2,3-Propanetriyltris[ω-Hydroxy-, Polymer With 1,3-Diisocyanatomethylbenzene, Et Alc.-Blocked is a specialized, blocked polyisocyanate prepolymer used as a crosslinking agent in high-performance coating systems. This product matters for formulators seeking to enhance the durability, chemical resistance, and mechanical properties of their final coatings while ensuring excellent storage stability. It is primarily needed by manufacturers in the automotive, industrial maintenance, and plastics coating industries who require reliable, high-quality raw materials for polyurethane-based formulations.

Application

• Automotive OEM and Refinish Coatings: As a key crosslinker in clearcoats and basecoats to provide superior scratch resistance, gloss, and weatherability.
• Industrial Maintenance Coatings: For heavy-duty protective coatings on infrastructure, pipelines, and industrial equipment requiring exceptional corrosion and chemical resistance.
• Plastics Coatings: Used in coating formulations for automotive plastics, consumer electronics, and other substrates where flexibility and adhesion are critical.
• Adhesives and Sealants: As a reactive component in high-performance polyurethane adhesives and sealants, contributing to strength and environmental resistance.
• Two-Component (2K) Polyurethane Systems: Serves as the blocked isocyanate component, which reacts with polyols upon heating to form a durable polymer network.

Basic Information

Product Name	Poly[Oxy(Methyl-1,2-Ethanediyl)], α,α',α''- 1,2,3-Propanetriyltris[ω-Hydroxy-, Polymer With 1,3-Diisocyanatomethylbenzene, Et Alc.-Blocked
CAS No.	125301-95-3
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Blocked Polyisocyanate Prepolymer; Blocked HDI Trimer (partially); Alcohol-blocked polyisocyanate; Polyether polyol, polymer with 1,3-diisocyanatomethylbenzene, alcohol-blocked; Trixene BI 7960 (potential trade name); Aliphatic blocked polyisocyanate crosslinker; Thermosetting polyurethane resin; Blocked aliphatic polyisocyanate
EINECS	Contact for details

Quality Control

Our blocked polyisocyanate crosslinker is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure consistent performance, including measurement of NCO content, viscosity, solids content, and blocking agent level. Certificates of Analysis (COA) detailing all relevant specifications are available upon request 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 room temperature (15-25°C). This product is hygroscopic (moisture-sensitive). Keep the container tightly sealed when not in use to prevent moisture absorption, which can affect product performance. Keep away from heat and open flame.

Specification

Item	Specification
Appearance	Clear, viscous liquid
Color (Gardner)	≤ 2
Solids Content	70 - 75 %
Viscosity (25°C)	2000 - 5000 mPa·s
NCO Content (theoretical, on solids)	10.0 - 12.0 %
Blocked NCO Content	≥ 99 %
Specific Gravity (25°C)	1.05 - 1.15
Flash Point	> 100 °C

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