Description

1,3-Propanediol, 2-Ethyl-2-(Hydroxymethyl)-, Polymer With 1,3-Diisocyanatomethylbenzene And 2,2'-Oxybis[Ethanol], Caprolactam-Blocked is a specialized, caprolactam-blocked polyurethane prepolymer designed for high-performance applications. This product matters because it offers a stable, latent-reactive intermediate that can be thermally activated to form durable cross-linked networks, providing excellent chemical resistance and mechanical properties. It is primarily needed by formulators in the coatings, adhesives, sealants, and elastomers (CASE) industries seeking to enhance product performance and processing characteristics.

Application

• High-Performance Industrial Coatings: Used as a cross-linking agent in powder coatings and solvent-borne systems for automotive, appliance, and metal finishing, providing excellent hardness, gloss, and chemical resistance.
• Adhesives and Sealants: Serves as a key component in formulating reactive hot-melt adhesives and structural sealants, contributing to strong bonding, flexibility, and durability.
• Elastomers and Castable Urethanes: Employed in the production of specialty polyurethane elastomers, rollers, and gaskets that require robust physical properties and resistance to oils and solvents.
• Fiber and Textile Finishes: Utilized in coatings for synthetic fibers and technical textiles to impart water repellency, abrasion resistance, and improved handle.
• Electrical Encapsulation: Applied in potting compounds and insulating materials for electronic components, offering good dielectric properties and thermal stability.
• Automotive Underbody Coatings: A critical ingredient in protective coatings that shield vehicle undercarriages from corrosion, stone chipping, and environmental damage.

Basic Information

Product Name	1,3-Propanediol, 2-Ethyl-2-(Hydroxymethyl)-, Polymer With 1,3-Diisocyanatomethylbenzene And 2,2'-Oxybis[Ethanol], Caprolactam-Blocked
CAS No.	128000-16-8
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Caprolactam-blocked HDI-based polyurethane prepolymer; Blocked polyisocyanate based on hexamethylene diisocyanate; HDI-Blocked polyurethane resin; 2-Ethyl-2-(hydroxymethyl)-1,3-propanediol polymer with 1,3-diisocyanatomethylbenzene and 2,2'-oxybis[ethanol], caprolactam-blocked; Trimethylolpropane (TMP) polyurethane prepolymer, caprolactam-blocked; Blocked aliphatic polyisocyanate; Crosslinker VESTAGON B 1065 (similar type); Urethane prepolymer, caprolactam-capped
EINECS	Contact for details

Quality Control

Our 1,3-Propanediol, 2-Ethyl-2-(Hydroxymethyl)-, Polymer undergoes rigorous quality testing to ensure batch-to-batch consistency and compliance with industry standards. Production is monitored against strict specifications for key parameters such as blocked isocyanate content, viscosity, and color. Certificates of Analysis (COA) detailing these results are available upon request 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 room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); containers must be kept tightly sealed to prevent absorption of atmospheric moisture, which can lead to premature deblocking and viscosity increase. Keep away from heat sources and open flames.

Specification

Item	Specification
Appearance	Viscous liquid to solid
Color (Gardner)	≤ 3
Viscosity (at 25°C)	Contact for details
Blocked NCO Content	Contact for details
Solid Content	~100%
De-blocking Temperature	~160°C
Acid Value	≤ 1.0 mg KOH/g

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