Description

Oxirane, Polymer With 1,6-Diisocyanatohexane, Stearyl Alc.-Blocked is a specialized blocked polyisocyanate prepolymer, where the reactive isocyanate groups are temporarily protected by a stearyl alcohol blocking agent. This chemical is critical for formulating stable, one-component polyurethane systems that cure upon heating, releasing the blocking agent. It is essential for manufacturers in the coatings, adhesives, and elastomers industries seeking to improve shelf-life, processing safety, and final product performance.

Application

• Heat-Curable Polyurethane Coatings: A key crosslinker in powder coatings, coil coatings, and automotive OEM finishes that require excellent flow, hardness, and chemical resistance upon thermal curing.
• Single-Component (1K) Adhesives & Sealants: Provides stable, moisture-free formulations that cure at elevated temperatures, ideal for assembly line processes in automotive and electronics.
• Elastomer and Rubber Modification: Used to enhance the properties of synthetic rubbers, improving tensile strength, abrasion resistance, and adhesion to substrates.
• Fiber and Textile Finishing: Imparts durable water repellency (DWR), wrinkle resistance, and softening effects to technical textiles and fabrics.
• Industrial Binders and Composites: Serves as a latent curing agent in prepregs and composite materials for the aerospace and wind energy sectors.
• Ink and Overprint Varnish Formulations: Enhances the gloss, scratch resistance, and durability of packaging and printing inks.

Basic Information

Product Name	Oxirane, Polymer With 1,6-Diisocyanatohexane, Stearyl Alc.-Blocked
CAS No.	162993-60-4
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Stearyl alcohol-blocked HDI isocyanurate; Blocked HDI trimer; Poly(oxy-1,2-ethanediyl), α-hydro-ω-hydroxy-, polymer with 1,6-diisocyanatohexane, stearyl alc.-blocked; Hexamethylene diisocyanate stearyl alcohol-blocked polymer; HDI-based blocked polyisocyanate; Thermolatent polyisocyanate; Blocked polyurethane crosslinker; Stearyl-blocked polyisocyanate prepolymer
EINECS	Contact for details

Quality Control

Every batch of our blocked polyisocyanate is produced under strict quality management systems to ensure consistency and performance. We provide comprehensive Certificates of Analysis (COA) that detail key parameters such as NCO content, blocking agent content, viscosity, and color. Our quality protocols are designed to meet the demanding specifications of the coatings and adhesives industries.

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 away from heat, sparks, and open flame. Under recommended storage conditions, the product has a typical shelf life of 12 months from the date of manufacture.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (Blocked NCO Content)	Contact for details
Viscosity @ 25°C	Contact for details
Color (Gardner)	≤ 2
Blocking Agent Content	Contact for details
Solids Content	Contact for details
De-blocking Temperature	~130 - 160°C

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