Description

Ethanol, 2,2'-thiobis-, polymer with 5-isocyanato-1-(isocyanatomethyl)-1,3,3-trimethylcyclohexane and methyloxirane polymer with oxirane ether with 2-ethyl-2-(hydroxymethyl)-1,3-propanediol (3:1), 2-hydroxyethyl acrylate-blocked is a specialized, high-performance blocked polyurethane prepolymer designed for advanced coating and adhesive systems. This compound is engineered to provide superior crosslinking density and durability upon thermal curing, offering excellent chemical resistance and mechanical properties. It is a critical raw material for formulators in the industrial coatings, automotive, and electronics sectors seeking to enhance product performance and reliability.

Application

• High-Performance Industrial Coatings: Used as a crosslinker in heat-cured coatings for metal substrates, providing exceptional hardness, chemical resistance, and weatherability.
• Automotive OEM and Refinish Paints: A key component in primer, basecoat, and clearcoat formulations requiring excellent adhesion, scratch resistance, and gloss retention.
• Wire and Cable Enamels: Serves as a binder in insulating varnishes and magnet wire coatings, offering thermal stability and electrical insulation properties.
• Adhesives and Sealants: Utilized in formulating one-component, heat-activated polyurethane adhesives for bonding plastics, composites, and metals in demanding environments.
• Electronic Encapsulants and Potting Compounds: Provides protection for sensitive electronic components due to its good dielectric properties and resistance to moisture and solvents.
• Can and Coil Coatings: Imparts flexibility, formability, and corrosion resistance to coatings applied to pre-fabricated metal sheets and containers.

Basic Information

Item	Information
Product Name	Ethanol, 2,2'-thiobis-, polymer with 5-isocyanato-1-(isocyanatomethyl)-1,3,3-trimethylcyclohexane and methyloxirane polymer with oxirane ether with 2-ethyl-2-(hydroxymethyl)-1,3-propanediol (3:1), 2-hydroxyethyl acrylate-blocked
CAS No.	128000-15-7
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Blocked Polyurethane Prepolymer; 2-Hydroxyethyl Acrylate-blocked IPDI/TMP/PPG Prepolymer; HEA-blocked Aliphatic Polyurethane; Acrylated Urethane Oligomer; Thermosetting Urethane Acrylate; IPDI-based Blocked Prepolymer; Aliphatic Polyurethane Crosslinker; Blocked Polyisocyanate Adduct
EINECS	Contact for details

Quality Control

Our production of this blocked polyurethane prepolymer adheres to a stringent quality management system to ensure batch-to-batch consistency and performance reliability. Each lot is characterized for critical parameters including NCO equivalent weight, blocking agent content, viscosity, and color. A comprehensive Certificate of Analysis (COA) detailing all test results is provided with every shipment to support your quality assurance protocols.

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). 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 sources and open flame.

Specification

Item	Specification
Appearance	Clear, viscous liquid
Color (Gardner)	≤ 3
Viscosity @ 25°C	Contact for details
Non-Volatile Matter	≥ 99.0 %
NCO Equivalent Weight	Contact for details
Blocked NCO Content	Contact for details
Acid Value	≤ 1.0 mg KOH/g
Moisture (Karl Fischer)	≤ 0.1 %

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