Description

Ethoxylated Trimethylolpropane Triacrylate is a multifunctional acrylate monomer characterized by its high reactivity and low viscosity. This compound is a crucial building block in the formulation of advanced polymers, offering excellent crosslinking density and enhanced flexibility. It is primarily sought after by manufacturers in the UV-curable coatings, inks, adhesives, and photopolymer resins industries for its ability to improve cure speed, adhesion, and chemical resistance in the final product.

Application

• UV-Curable Coatings & Inks: A key reactive diluent and crosslinker for wood, plastic, and metal coatings, as well as graphic arts and printing inks, providing fast curing and high gloss.
• Photopolymer Resins: Used in stereolithography (SLA) and other 3D printing resins to create parts with excellent mechanical strength and fine detail resolution.
• Adhesives & Sealants: Enhances the performance of instant-cure adhesives, including pressure-sensitive and structural types, by improving tack and bond strength.
• Fiber Optic Coatings: Employed in the primary and secondary coatings for optical fibers to protect against moisture and mechanical stress.
• Electronics: Used in solder masks, conformal coatings, and dielectric materials for printed circuit boards (PCBs).
• Overprint Varnishes: Imparts scratch resistance and durability to packaging materials and printed surfaces.

Basic Information

Product Name	Ethoxylated Trimethylolpropane Triacrylate
CAS No.	28961-43-5
Molecular Formula	C21H32O9
Molecular Weight	428.47 g/mol
Synonyms	TMP(EO)TA; Trimethylolpropane Ethoxylate Triacrylate; Ethoxylated TMPTA; TMPEOTA; 2-Ethyl-2-(((1-oxo-2-propen-1-yl)oxy)methyl)-1,3-propanediyl bis(oxy-2,1-ethanediyl) diacrylate; PEGylated TMP Triacrylate; Acrylic ester of ethoxylated trimethylolpropane; Photomer 4158 (Trade Name)
EINECS	249-316-3

Quality Control

Our Ethoxylated Trimethylolpropane Triacrylate is produced under a strict quality management system. Every batch undergoes comprehensive analytical testing to ensure it meets precise specifications for purity, viscosity, color, and inhibitor content. A Certificate of Analysis (COA) documenting these results is provided with each shipment to guarantee consistency and performance for your formulations.

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). Keep away from heat, sparks, and open flame. For long-term storage, under an inert atmosphere such as nitrogen is recommended to prevent premature polymerization.

Specification

Item	Specification
Appearance	Clear, Colorless to Pale Yellow Liquid
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0 %
Color (APHA)	≤ 50
Viscosity @ 25°C	80 - 120 mPa·s
Acid Value	≤ 0.5 mg KOH/g
Water Content (KF)	≤ 0.1 %
Inhibitor (MEHQ)	100 - 200 ppm

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