Description

Poly(oxy-1,4-butanediyl), .alpha.-hydro-.omega.-hydroxy-, polymer with 2,4-diisocyanato-1-methylbenzene, 2-hydroxyethyl acrylate-blocked is a specialized urethane acrylate oligomer designed for high-performance applications. This compound is valued for its ability to impart excellent flexibility, chemical resistance, and UV-curability to final formulations. It is primarily sought by manufacturers in the coatings, adhesives, sealants, and elastomers (CASE) industries, as well as for advanced composites and 3D printing resins. CAS No. 88917-25-3.

Application

• UV-Curable Coatings & Inks: As a key oligomer in formulations for wood, plastic, and metal coatings, providing fast cure, durability, and weatherability.
• High-Performance Adhesives & Sealants: Imparts strong adhesion, flexibility, and resistance to chemicals and environmental stress cracking.
• Elastomer and Rubber Modification: Used to enhance the toughness, abrasion resistance, and low-temperature flexibility of polyurethane and other elastomeric systems.
• Fiber-Reinforced Composites: Serves as a matrix resin or toughening agent in composite materials for automotive and aerospace components.
• 3D Printing (SLA/DLP): A functional oligomer in photopolymer resins, contributing to the mechanical properties and resolution of printed parts.
• Electronic Encapsulants & Potting Compounds: Provides protective, insulating layers with good adhesion and environmental resistance for electronic assemblies.

Basic Information

Product Name	Poly(oxy-1,4-butanediyl), .alpha.-hydro-.omega.-hydroxy-, polymer with 2,4-diisocyanato-1-methylbenzene, 2-hydroxyethyl acrylate-blocked
CAS No.	88917-25-3
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Urethane acrylate oligomer; Acrylated polyurethane; HEA-blocked urethane acrylate; Poly(tetramethylene glycol)-based urethane acrylate; PTMEG urethane acrylate; Photocurable urethane oligomer; 2-Hydroxyethyl acrylate blocked TDI urethane prepolymer; Oligomeric urethane acrylate
EINECS	Contact for details

Quality Control

Our production of this urethane acrylate adheres to strict quality management protocols to ensure batch-to-batch consistency and performance reliability. Key parameters such as acrylate equivalent weight, viscosity, color, and residual isocyanate content are rigorously monitored. A comprehensive Certificate of Analysis (COA) detailing purity and specification conformance is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at temperatures between 15-25°C (59-77°F). This product is hygroscopic (moisture-sensitive) and should be kept under a dry inert atmosphere (e.g., nitrogen) after opening to prevent moisture absorption and premature polymerization. Keep away from strong alkalis and incompatible organic solvents.

Specification

Item	Specification
Appearance	Clear, viscous liquid
Color (Gardner)	≤ 3
Viscosity @ 25°C	Contact for details
Acrylate Equivalent Weight (AEW)	Contact for details
Acid Value	≤ 2.0 mg KOH/g
Water Content (Karl Fischer)	≤ 0.1 %
Identification (IR)	Conforms

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