Description

1,3-Propanediol, 2-ethyl-2-(hydroxymethyl)-, polymer with 5-isocyanato-1-(isocyanatomethyl)-1,3,3-trimethylcyclohexane, oxirane and 2,2'-thiobis[ethanol], 2-hydroxyethyl acrylate-blocked is a specialized, high-performance blocked polyurethane prepolymer designed for advanced coating and adhesive formulations. This compound matters because it offers a unique combination of chemical resistance, flexibility, and controlled reactivity, enabling the development of durable, high-performance end products. It is primarily needed by formulators in the automotive, industrial maintenance, and specialty plastics sectors seeking to enhance material properties.

Application

• High-Performance Coatings: Used as a crosslinking agent in polyurethane-based coatings for automotive clear coats, industrial finishes, and corrosion-resistant paints.
• Advanced Adhesives & Sealants: Serves as a key component in formulating structural adhesives, potting compounds, and elastic sealants requiring excellent adhesion and environmental stability.
• Fiber-Reinforced Composites: Acts as a matrix resin or toughening agent in composite materials for aerospace, marine, and automotive applications.
• Elastomer Modification: Employed to improve the impact resistance, tensile strength, and thermal properties of polyurethane and epoxy elastomers.
• UV-Curable Systems: Utilized in hybrid curing systems where the blocked isocyanate group provides thermal cure latency, complementing UV-initiated acrylate polymerization.
• Encapsulation Resins: Suitable for electronic encapsulation and potting applications due to its potential for low moisture permeability and good electrical insulation properties.

Basic Information

Product Name	1,3-Propanediol, 2-ethyl-2-(hydroxymethyl)-, polymer with 5-isocyanato-1-(isocyanatomethyl)-1,3,3-trimethylcyclohexane, oxirane and 2,2'-thiobis[ethanol], 2-hydroxyethyl acrylate-blocked
CAS No.	129783-29-5
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Blocked polyisocyanate prepolymer; Acrylate-blocked aliphatic polyurethane; HEA-blocked IPDI-based prepolymer; Trimethylolpropane ethoxylate, polymer with isophorone diisocyanate, oxirane and thiodiethanol, 2-hydroxyethyl acrylate-blocked; Polyurethane prepolymer, acrylate blocked; Thermolatent polyurethane crosslinker; 2-Hydroxyethyl acrylate blocked polyurethane resin
EINECS	Contact for details

Quality Control

Our products undergo rigorous quality testing to ensure compliance with industry standards. Every batch is characterized for critical parameters including blocked isocyanate content, viscosity, solids content, and color to guarantee batch-to-batch consistency and performance reliability. Certificates of Analysis (COA) detailing these specifications are available upon request. Our manufacturing processes adhere to a strict quality management system.

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) and light-sensitive; exposure to atmospheric moisture or direct light can lead to premature reaction or degradation of the blocked isocyanate groups. Keep away from heat sources and incompatible materials such as strong bases, acids, and amines.

Specification

Item	Specification
Appearance	Clear, viscous liquid
Color (Gardner)	≤ 3
Solids Content	Contact for details
Viscosity (at 25°C)	Contact for details
Blocked NCO Content	Contact for details
Acrylate Equivalent Weight	Contact for details
Specific Gravity (25°C)	Contact for details
Flash Point	> 100 °C

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