Description

Benzene, 1,3-Bis(1-Isocyanato-1-Methylethyl)-, Homopolymer, Polyethylene Glycol Mono-Me Ether-Blocked is a specialized, blocked polyisocyanate prepolymer designed for controlled reactivity. This product matters because its blocked isocyanate groups provide excellent shelf stability and latent curing functionality, enabling one-component systems that cure upon heating. It is primarily needed by formulators in the coatings, adhesives, sealants, and elastomers (CASE) industries seeking to develop high-performance, moisture-insensitive products with enhanced processing windows.

Application

• One-Component (1K) Polyurethane Coatings: As a latent crosslinker in automotive, industrial, and coil coatings that cure at elevated temperatures.
• Powder Coatings: Serving as a crosslinking agent that remains stable during powder manufacture and storage, then activates during the curing cycle.
• Adhesives and Sealants: For formulating heat-curable adhesives with improved pot life and application properties.
• Elastomer Modification: To enhance the mechanical and chemical resistance properties of various rubber and elastomeric compounds.
• Fiber Sizing and Treatment: As a key component in treatments for glass or carbon fibers to improve interfacial adhesion in composite materials.
• Ink and Overprint Varnish Formulations: Providing durable, crosslinked film properties in specialty printing applications.

Basic Information

Product Name	Benzene, 1,3-Bis(1-Isocyanato-1-Methylethyl)-, Homopolymer, Polyethylene Glycol Mono-Me Ether-Blocked
CAS No.	197098-60-5
Molecular Formula	Typically a polymeric mixture; base unit related to C15H24N2O4
Molecular Weight	Varies (Polymer)
Synonyms	Blocked HDI Trimer; Poly(oxy-1,2-ethanediyl), α-hydro-ω-hydroxy-, ether with α,α,α',α'-tetramethyl-1,3-benzenedimethanol (3:1), polymer with 1,1'-methylenebis[4-isocyanatobenzene], 2-ethylhexyl-blocked; PEG-blocked polyisocyanate; Blocked polyisocyanate based on HDI; Methoxy polyethylene glycol blocked polyisocyanate; Thermally reactive polyisocyanate; Latent curing agent; Blocked aliphatic polyisocyanate prepolymer
EINECS	Contact for details

Quality Control

Our blocked polyisocyanate products undergo rigorous quality testing to ensure batch-to-batch consistency and performance reliability. Key parameters such as blocked isocyanate content, viscosity, solids content, and deblocking temperature are strictly monitored. 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 to prevent moisture absorption, which can lead to premature reaction or gelation. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid
Solids Content	Contact for details
Viscosity (at 25°C)	Contact for details
Blocked NCO Content	Contact for details
Deblocking Temperature	Contact for details
Color (Gardner)	≤ 2
Moisture Content	≤ 0.1%

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