Description

Poly(oxy-1,4-butanediyl), .alpha.-hydro-.omega.-hydroxy-, polymer with 1,3-diisocyanatomethylbenzene, 2-hydroxyethyl methacrylate-blocked Reaction product of hydroxyethylmethacrylate, toluene diisocyanate,and polytetramethylene glycol is a specialized urethane methacrylate prepolymer designed for high-performance applications. This compound is engineered to deliver exceptional durability, chemical resistance, and adhesion properties in formulated systems. It is a critical raw material for industries requiring advanced, cross-linkable polymer matrices for protective and functional coatings, adhesives, and sealants.

Application

• UV-Curable Coatings: A key oligomer for formulating high-gloss, scratch-resistant, and weatherable UV-curable coatings for wood, plastic, and metal substrates.
• Industrial Adhesives & Sealants: Used to enhance the strength, flexibility, and environmental resistance of structural adhesives and elastomeric sealants.
• Inks and Overprint Varnishes: Provides excellent adhesion and fast cure speeds in energy-curable printing inks and protective varnishes for packaging.
• Fiber Optic Coatings: Employed in primary and secondary coatings for optical fibers due to its balanced mechanical properties and rapid curing.
• 3D Printing Resins: Serves as a reactive diluent and property modifier in stereolithography (SLA) and other photopolymer-based additive manufacturing resins.
• Electronic Encapsulants: Used in potting and encapsulation compounds to protect sensitive electronic components from moisture and mechanical stress.

Basic Information

Product Name	Poly(oxy-1,4-butanediyl), .alpha.-hydro-.omega.-hydroxy-, polymer with 1,3-diisocyanatomethylbenzene, 2-hydroxyethyl methacrylate-blocked Reaction product of hydroxyethylmethacrylate, toluene diisocyanate,and polytetramethylene glycol
CAS No.	70750-16-2
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Urethane Methacrylate; TDI-PTMG-HEMA Urethane Methacrylate; HEMA-blocked TDI-PTMG Prepolymer; Poly(tetramethylene oxide) urethane methacrylate; PTMEG-based Urethane Acrylate; Aliphatic Urethane Acrylate Oligomer; UV-curable Urethane Acrylate; Reactive Urethane Prepolymer
EINECS	Contact for details

Quality Control

Our urethane methacrylate prepolymers are manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including measurement of methacrylate equivalent weight, viscosity, color, and residual isocyanate content, to ensure consistent performance and batch-to-batch reliability. Certificates of Analysis (COA) documenting full specifications are available upon request.

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); containers must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product performance.

Specification

Item	Specification
Appearance	Clear, viscous liquid
Color (Gardner)	≤ 3
Viscosity @ 25°C	Contact for details
Methacrylate Equivalent Weight	Contact for details
Acid Value (mg KOH/g)	≤ 2.0
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.