Description

Tri(Propylene Glycol) Diacrylate is a difunctional acrylate monomer characterized by its low viscosity and excellent reactivity. This compound is a crucial building block in the formulation of UV-curable and radiation-curable systems, enabling rapid polymerization and cross-linking. It is primarily sought after by manufacturers in the coatings, inks, adhesives, and photopolymer resin industries for creating durable, high-performance finishes and materials.

Application

• UV-Curable Coatings & Inks: A key reactive diluent and cross-linker for wood, plastic, and metal coatings, as well as graphic arts and screen printing inks, providing fast cure speeds and enhanced surface hardness.
• Adhesives & Sealants: Used in the formulation of instant-cure structural and pressure-sensitive adhesives (PSAs) for electronics, automotive, and medical device assembly.
• Photopolymer Resins: Serves as a primary oligomer in resins for 3D printing (stereolithography - SLA), flexographic printing plates, and dental composites.
• Fiber Optic Coatings: Employed in radiation-curable primary and secondary coatings to protect optical fibers, offering excellent flexibility and environmental resistance.
• Overprint Varnishes: Enhances the gloss, scuff resistance, and drying speed of protective varnishes applied to packaging and printed materials.
• Electronics Encapsulation: Used in potting compounds and conformal coatings to protect sensitive electronic components, providing good electrical properties and moisture resistance.

Basic Information

Product Name	Tri(Propylene Glycol) Diacrylate
CAS No.	42978-66-5
Molecular Formula	C15H24O6
Molecular Weight	300.35 g/mol
Synonyms	TPGDA; Tripropylene Glycol Diacrylate; PPG-3 Diacrylate; 2-Propenoic Acid, 1,1'-[1,1'-(1-Methyl-1,3-propanediyl)bis(oxy-3,1-propanediyl)] Ester; SR306; Photomer 4061; NK Ester A-3PG; Miramer M340; Light Acrylate TPGDA; Aronix M-220
EINECS	256-032-2

Quality Control

Our Tri(Propylene Glycol) Diacrylate is manufactured under a strict quality management system to ensure batch-to-batch consistency and high purity. Each lot is analyzed to confirm compliance with established specifications for identity, assay, color, acidity, and moisture content. A comprehensive Certificate of Analysis (COA) documenting all test results is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at temperatures between 15°C and 25°C (59°F and 77°F). Keep away from heat, sparks, and open flame. To maintain optimal quality and prevent premature polymerization, store under an inert atmosphere (nitrogen) and avoid prolonged exposure to air.

Specification

Item	Specification
Appearance	Clear, Colorless to Pale Yellow Liquid
Identification (IR)	Conforms
Assay (GC)	≥ 97.0 %
Color (APHA)	≤ 50
Acidity (as Acrylic Acid)	≤ 0.1 %
Water Content (KF)	≤ 0.1 %
Viscosity @ 25°C	10 - 20 mPa·s
Specific Gravity @ 20°C	1.04 - 1.06
Refractive Index @ 20°C	1.450 - 1.455

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