Description

1,3-Propanediol, 2-ethyl-2-(hydroxymethyl)-, polymer with 5-isocyanato-1-(isocyanatomethyl)-1,3,3-trimethylcyclohexane, methyloxirane, 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 provides a stable, latent isocyanate functionality that cures upon heating, enabling the production of durable, high-gloss finishes with excellent chemical and abrasion resistance. Industrial manufacturers in the automotive, industrial maintenance, and specialty plastics sectors rely on this material to enhance product longevity and performance under demanding conditions.

Application

• High-Performance Industrial Coatings: Used as a crosslinker in heat-cured polyurethane coatings for automotive OEM and refinish, aerospace, and heavy-duty equipment, providing excellent hardness and weatherability.
• Adhesives and Sealants: Serves as a key component in structural and assembly adhesives requiring thermal curing for superior bond strength and environmental resistance.
• Elastomers and Casting Resins: Employed in the formulation of polyurethane elastomers, rollers, and gaskets that demand a balance of flexibility and toughness.
• Fiber and Textile Coatings: Utilized to create durable, flexible coatings for synthetic leather, waterproof textiles, and industrial fabrics.
• Electrical Potting and Encapsulation: Provides protective, insulating properties for electronic components when cured, offering resistance to moisture and thermal cycling.
• Wood and Furniture Finishes: Imparts a hard, scratch-resistant, and chemically durable topcoat for premium furniture and flooring applications.

Basic Information

Product Name	1,3-Propanediol, 2-ethyl-2-(hydroxymethyl)-, polymer with 5-isocyanato-1-(isocyanatomethyl)-1,3,3-trimethylcyclohexane, methyloxirane, oxirane and 2,2'-thiobis[ethanol], 2-hydroxyethyl acrylate-blocked
CAS No.	129783-34-2
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Blocked polyisocyanate prepolymer; HEA-blocked IPDI/TMP/PO/EO copolymer; 2-Hydroxyethyl acrylate blocked aliphatic polyisocyanate; Acrylated polyurethane prepolymer; Thermosetting polyurethane resin; Aliphatic blocked polyisocyanate; IPDI-based blocked prepolymer; Polyether polyol blocked with HEA
EINECS	Contact for details

Quality Control

Our blocked polyurethane prepolymers are manufactured under strict quality management systems to ensure batch-to-batch consistency and performance reliability. Each lot is tested against critical parameters including blocked isocyanate content, viscosity, solids content, and color to meet precise customer specifications. Certificates of Analysis (COA) documenting these results are provided with every shipment. Our production adheres to relevant ISO standards, and we support our global partners with comprehensive regulatory documentation.

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. Keep away from heat sources and incompatible materials such as strong bases, acids, and amines.

Specification

Item	Specification
Appearance	Clear, viscous liquid
Color (Gardner)	≤ 2
Solids Content	70 ± 2 %
Viscosity (25°C)	2000 - 5000 mPa·s
Blocked NCO Content	5.0 - 7.0 %
Acid Value	≤ 1.0 mg KOH/g
Hydroxyl Value	Contact for details
Identification (IR)	Conforms

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