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Trimethylolpropane Ethoxylate Triacrylate is readily biodegradable and will be degraded within the wastewater treatment process.
Trimethylolpropane Ethoxylate Triacrylate is a trifunctional acrylate ester monomer derived from trimethylolpropane, used in the manufacture of plastics, adhesives, acrylic glue, anaerobic sealants, and ink.
Trimethylolpropane Ethoxylate Triacrylate is useful for its low volatility and fast cure response.
CAS Number: 28961-43-5
Molecular Formula: C21H32O9
Molecular Weight: 1176
EINECS Number: 500-066-5
Synonyms:75577-70-7, (2-Ethyl-2-((2-((1-oxoallyl)oxy)ethoxy)methyl)-1,3-propanediyl)bis(oxy-2,1-ethanediyl) diacrylate, EINECS 278-260-1, DTXSID00858841, [2-ethyl-2-[[2-[(1-oxoallyl)oxy]ethoxy]methyl]-1,3-propanediyl]bis(oxy-2,1-ethanediyl) diacrylate, RefChem:68598, DTXCID007950, 278-260-1, 28961-43-5, Trimethylolpropane ethoxylate triacrylate, 2-[2,2-bis(2-prop-2-enoyloxyethoxymethyl)butoxy]ethyl prop-2-enoate, 2-Propenoic acid, 1,1'-[[2-ethyl-2-[[2-[(1-oxo-2-propen-1-yl)oxy]ethoxy]methyl]-1,3-propanediyl]bis(oxy-2,1-ethanediyl)] ester, C21H32O9, DSSTox_CID_7950, DSSTox_RID_78621, DSSTox_GSID_27950, SCHEMBL268280, CHEMBL1475714, Tox21_200160, AKOS015915593, NCGC00164412-01, NCGC00164412-02, NCGC00257714-01, DA-58739, FT176506, CAS-28961-43-5, NS00019845, Poly Trimethylolpropane ethoxylate triacrylate, trimethylolpropaneethoxylate(1eo/oh)triacryla, 961T435, Trimethylolpropane ethoxylate triacrylate, average Mn ~428, ((2-((2-(Acryloyloxy)ethoxy)methyl)-2-ethylpropane-1,3-diyl)bis(oxy))bis(ethane-2,1-diyl) diacrylate, 2-ethanediyl),alpha-hydro-omega-[(1-oxo-2-propenyl)oxy]-poly(oxy-etherw;ith2-ethyl-2-(hydroxymethyl)-1,3-propanediol(3:1);Poly(oxy-1,2-ethanediyl),.alpha.-hydro-.omega.-[(1-oxo-2-propenyl)oxy]-,etherwith2-ethyl-2-(hydroxymethyl)-1,3-propanediol(3:1), trimethylolpropaneethoxylate(1eo/oh)triacryla, Trimethylolpropaneethoxylated, triacrylate, trimethylolpropaneethoxytriacrylate, Trimethylolpropanepolyoxyethylenetriacrylate, ETHOXYLATED TRIMETHYLOL PROPANE TRIACRYLATE
Trimethylolpropane Ethoxylate Triacrylate has the properties of weather, chemical and water resistance, as well as good abrasion resistance.
End products include alkyd coatings, compact discs, hardwood floors, concrete and cementitious applications, Dental composites, photolithography, letterpress, screen printing, elastomers, automobile headlamps, acrylics and plastic components for the medical industry.
Trimethylolpropane Ethoxylate Triacrylate is a highly functionalized, multifunctional acrylate ester derived from the reaction of trimethylolpropane (TMP) with ethylene oxide and acrylic acid or acryloyl chloride.
Its molecular structure features a central trimethylolpropane core, where each of the three hydroxyl groups has been ethoxylated and subsequently esterified with acrylate groups, resulting in a molecule with three terminal polymerizable acrylate moieties.
This configuration gives it a tri-functional nature, which is highly valuable in polymer and material chemistry because it allows the compound to form crosslinked networks when exposed to free-radical polymerization conditions.
Trimethylolpropane Ethoxylate Triacrylate is a biocompatible polymer that is used as an optical adhesive and has been shown to have genotoxic effects.
Trimethylolpropane Ethoxylate Triacrylate is based on the chemical structure of benzalkonium chloride, glycol ether, inorganic acid, radiation and substrate film.
Trimethylolpropane Ethoxylate Triacrylate has a phase transition temperature of approximately 104 °C.
The hydroxyl group on the polymer molecule can also form hydrogen bonds with other molecules, leading to increased chemical stability.
This polymer may be considered for use in cell nuclei because it contains fatty acid chains.
The ethoxylate chains attached to the trimethylolpropane backbone provide flexibility, hydrophilicity, and improved miscibility with other monomers, oligomers, and solvents, while the acrylate end groups impart reactivity toward photoinitiated or thermally initiated polymerization reactions.
This combination makes Trimethylolpropane Ethoxylate Triacrylate a versatile reactive diluent and crosslinker in high-performance coatings, inks, adhesives, and composite materials.
Trimethylolpropane Ethoxylate Triacrylate can reduce viscosity in highly viscous formulations while maintaining the mechanical strength, chemical resistance, and durability of the resulting polymer networks.
Trimethylolpropane Ethoxylate Triacrylate is a trifunctional monomer and is a transparent colorless liquid.
Trimethylolpropane Ethoxylate Triacrylate possesses low skin irritation, good dilution, shows fast curing and good flexibility.
Trimethylolpropane Ethoxylate Triacrylate is ethoxylated trimethylolpropane triacrylate.
It is highly active and has low volatility and high crosslink density.
Trimethylolpropane Ethoxylate Triacrylate offers good flexibility and also causes low skin irritation.
In industrial applications, Trimethylolpropane Ethoxylate Triacrylate is commonly used in UV-curable or electron-beam-curable systems, where its tri-functionality enables rapid curing and high crosslink density, producing hard, tough, and chemically resistant coatings.
It is also used as a reactive diluent in epoxy, acrylate, and methacrylate formulations, improving processability without introducing volatile organic compounds (VOCs), making it suitable for environmentally friendly coatings and adhesives.
Trimethylolpropane Ethoxylate Triacrylate is generally a colorless to pale yellow viscous liquid at room temperature, with high solubility in acrylate-based monomers, solvents, and some polar organic compounds.
Trimethylolpropane Ethoxylate Triacrylates chemical reactivity and low volatility make it ideal for precision applications in 3D printing, photopolymer resins, and electronics encapsulation, where rapid curing, dimensional stability, and adhesion are critical.
From a chemical perspective, the tri-functional nature of Trimethylolpropane Ethoxylate Triacrylate allows it to act as a crosslinker, reactive diluent, or network former, making it a key intermediate in the production of high-performance polymers.
The balance between flexibility from the ethoxylate chains and rigidity from the crosslinked acrylate network allows engineers and chemists to fine-tune mechanical properties, thermal stability, and chemical resistance in a wide range of industrial, commercial, and research applications.
Boiling Point: 157 °C (lit.)
Density: 1.12 g/mL at 25 °C
Vapor Pressure: 0 Pa at 25 °C
Refractive Index: n20/D 1.471 (lit.)
Flash Point: >230 °F
Form: Liquid
Color: Colorless to light yellow
Viscosity: 60 cP (25 °C), 95 cP (25 °C), 148 cP (25 °C), 170 cP (25 °C), 225 cP (25 °C)
Water Solubility: 880 mg/L at 20 °C
InChI: InChI=1S/C21H32O9/c1-5-18(22)28-12-9-25-15-21(8-4,16-26-10-13-29-19(23)6-2)17-27-11-14-30-20(24)7-3/h5-7H,1-3,8-17H2,4H3
InChIKey: MTPIZGPBYCHTGQ-UHFFFAOYSA-N
SMILES: C(CC)(COCCOC(=O)C=C)(COCCOC(=O)C=C)COCCOC(=O)C=C
LogP: 2.89 at 23 °C
Trimethylolpropane Ethoxylate Triacrylate is a plasticizer that can be used synthesize nanocomposites.
Trimethylolpropane Ethoxylate Triacrylate is an ethoxylated modified product of TMPTA; compared with TMPTA, on the basis of no loss or a small amount of speed, it greatly improves product flexibility, enhances wear resistance and scratch resistance, and greatly reduces product irritation.
Properties, viscosity, shrinkage rate and improved solubility, etc.
These changes have broadened the application fields, especially in the fields of printing inks and nail polishes that are often in contact with the human body.
Trimethylolpropane Ethoxylate Triacrylate is a highly versatile, tri-functional acrylate monomer that serves as a key building block in advanced polymeric systems.
Trimethylolpropane Ethoxylate Triacrylates structure is based on trimethylolpropane, a triol with a compact, branched central core, which is ethoxylated to introduce flexible ethylene glycol units and further esterified with acrylate groups, creating three terminal sites capable of polymerization.
This makes the molecule both reactive and flexible, combining the mechanical stability of a tri-functional core with the mobility and solubility imparted by the ethoxylate chains.
The acrylate termini allow Trimethylolpropane Ethoxylate Triacrylate to participate in free-radical polymerization, either thermally or via photoinitiation under UV or visible light, which enables rapid crosslinking and network formation.
This property is particularly important in high-performance coatings, adhesives, and composites, where curing speed, adhesion, and durability are critical.
Its structure also allows for fine-tuning of polymer properties, such as hardness, flexibility, thermal resistance, and chemical resistance, by adjusting the degree of crosslinking or the ratio of TMPEOTA to other monomers.
In addition, the ethoxylate chains improve solubility in polar and semi-polar solvents, allowing the compound to function as a reactive diluent, which reduces viscosity in highly viscous resins without introducing volatile organic compounds (VOCs).
This property makes Trimethylolpropane Ethoxylate Triacrylate environmentally preferable in modern UV-cured coatings and inks.
Its hydrophilic segments can also aid in compatibility with other polymerizable monomers or oligomers, enabling uniform mixing and homogeneous curing.
Industrial applications of Trimethylolpropane Ethoxylate Triacrylate include 3D printing resins, UV-curable inks, protective coatings, optical adhesives, and electronics encapsulants, where its rapid curing kinetics, high crosslink density, and mechanical stability are critical.
Trimethylolpropane Ethoxylate Triacrylate is also used in formulating hybrid polymers, combining acrylate chemistry with epoxy or urethane systems, to create customized materials with specific thermal, chemical, and mechanical properties.
Trimethylolpropane Ethoxylate Triacrylate is typically a colorless to pale yellow viscous liquid with good solubility in a variety of monomers and polar solvents.
Chemically, it is reactive toward free radicals and nucleophiles, which allows for controlled polymerization under mild conditions, but also requires careful storage and handling to prevent premature polymerization or degradation.
Trimethylolpropane Ethoxylate Triacrylate can be stabilized with inhibitors to prevent unintended polymerization during transport or storage.
Trimethylolpropane Ethoxylate Triacrylate is valued for its combination of tri-functionality, flexibility, chemical reactivity, and processability, which allows it to serve as a cornerstone in advanced materials design.
Its ability to form dense, crosslinked networks while maintaining solubility and flexibility makes it indispensable in coatings, adhesives, 3D printing, electronics, and high-performance polymer manufacturing.
Uses:
Ethoxylated trimethylolpropane triacrylate is an important acrylic functional monomer and is widely used in coatings, adhesives, electronics and composite materials.
The cured film formed by it has strong wear resistance and corrosion resistance, and is currently the most widely used multifunctional reactive diluting monomer.
As the molecule has acrylic functionality, it is capable of doing the Michael reaction with an amine.
This allows its use in epoxy chemistry where its use speeds up the cure time considerably.
Trimethylolpropane Ethoxylate Triacrylate can be used as a vulcanization booster for specialty rubbers such as ethylene propylene rubber, EPDM rubber, silicone rubber, polyurethane, ethylene/vinyl acetate (EVA) copolymer and chlorinated polyethylene elastomer (CPE).
Typically, the vulcanization process is catalyzed with organic peroxides (such as DCP or BPO) however some rubbers are difficult to fully vulcanize using only peroxide catalysts.
This usually results in longer curing times and lower yields, compromising mechanical and physical properties.
Trimethylolpropane Ethoxylate Triacrylate has greatly improved the kinetics of vulcanization: for example, when using DCP for curing, if 1 to 4% Trimethylolpropane Ethoxylate Triacrylate additive is used as a curing agent, not only the curing time is greatly reduced, but the overall chemical and mechanical properties are improved.
Trimethylolpropane Ethoxylate Triacrylate is extensively used in UV-curable coatings because its tri-functional acrylate groups enable rapid crosslinking, producing hard, durable, and chemically resistant surfaces.
These coatings are applied to wood, metal, plastics, and glass, providing scratch resistance, adhesion, and glossy finishes.
The ethoxylate chains also improve flow, leveling, and compatibility with other resin components, resulting in smooth, uniform coatings with minimal defects.
Trimethylolpropane Ethoxylate Triacrylate is a key component in photopolymer resins for 3D printing, including stereolithography (SLA) and digital light processing (DLP) technologies.
Its rapid photopolymerization and high crosslink density allow the production of dimensionally accurate, mechanically strong, and thermally stable parts.
The flexible ethoxylate segments provide improved stress distribution, reducing cracking and warping during curing and enhancing long-term durability of printed objects.
In adhesive formulations, Trimethylolpropane Ethoxylate Triacrylate acts as a reactive diluent and crosslinker, improving adhesion strength, curing speed, and mechanical properties.
Its ability to co-polymerize with other acrylate or epoxy monomers allows the development of high-performance structural adhesives, optical adhesives, and pressure-sensitive adhesives that are resistant to moisture, heat, and chemical exposure.
Trimethylolpropane Ethoxylate Triacrylate is widely used in UV-curable inks for industrial printing, including packaging, textile, and decorative applications.
Its low viscosity, high reactivity, and crosslinking ability allow inks to cure rapidly under UV light, producing highly adherent, durable, and chemically resistant prints. The compound also enhances color stability and gloss, while maintaining compatibility with a wide range of pigments and fillers.
Due to its high crosslinking capability and optical clarity, Trimethylolpropane Ethoxylate Triacrylate is used in electronics encapsulants, coatings for circuit boards, and protective layers for optical devices.
Trimethylolpropane Ethoxylate Triacrylate provides dimensional stability, thermal resistance, and electrical insulation, making it ideal for encapsulation of sensitive electronic components and transparent coatings for lenses or displays.
In composite materials, Trimethylolpropane Ethoxylate Triacrylate acts as a crosslinker in epoxy, urethane, and acrylate-based systems, providing rigid and chemically resistant polymer matrices.
Its tri-functional structure allows high network density, which enhances mechanical strength, thermal stability, and chemical resistance in composites used for automotive, aerospace, and industrial applications.
Trimethylolpropane Ethoxylate Triacrylate can also serve as a reactive diluent, reducing viscosity of highly viscous resins while still participating in curing reactions.
This property allows chemists and engineers to formulate UV-curable or thermally cured systems that are easy to process, spread, or mold, without compromising the final mechanical or chemical properties of the polymer network.
Trimethylolpropane Ethoxylate Triacrylate is sometimes used in dental resins, restorative materials, and medical device coatings, where its high crosslink density, rapid cure, and biocompatibility are crucial.
Trimethylolpropane Ethoxylate Triacrylate enables durable, wear-resistant materials for fillings, adhesives, or coatings that must withstand mechanical stress, moisture, and chemical exposure in the human body.
Unlike traditional solvent-based monomers, Trimethylolpropane Ethoxylate Triacrylate is a reactive component that becomes part of the polymer network, meaning it does not evaporate during curing, reducing volatile organic compound (VOC) emissions.
This makes it valuable for eco-friendly industrial coatings, inks, and adhesives, aligning with modern environmental regulations and sustainability initiatives.
Trimethylolpropane ethoxylate triacrylate can be used: As a cross-linking agent or a polymerizable monomer in the preparation of gel polymer electrolyte for Lithium-ion batteries.
Trimethylolpropane Ethoxylate Triacrylate enhances the thermal stability, ionic conductivity, and mechanical strength of the polymer.
As a monomer to prepare UV-curable resins via v at photopolymerization, for stereolithography (SLA) and digital light processing (DLP).
These techniques have potential applications in the 3D printing of medical devices, soft robots, dental implants, Optical adhesives, and microfluidic devices.
To synthesize inverse micropatterned photonic crystal (PhC) films via photopolymerization for the detection of alcohol content in water.
Safety Profile:
Trimethylolpropane Ethoxylate Triacrylate's classification got worse over time; in November 2023 all mixtures containing ≥ 1% by weight of TMPTA had been classified as carcinogen category 2 (H351).
To overcome this problem, ethoxylated versions (EOTMPTA) were launched on the market, registred on ECHA with a range going from 1 to 6.5 moles of ethoxylation.
Trimethylolpropane Ethoxylate Triacrylate is known to be irritating to the skin.
Direct contact with the liquid or concentrated solutions can cause redness, itching, and burning sensations, and prolonged or repeated exposure may lead to dermatitis or allergic sensitization.
Individuals who are sensitive to acrylates may develop severe skin reactions, so wearing protective gloves and clothing is essential when handling the chemical.
Contact with the eyes can result in significant irritation, redness, pain, and tearing.
In severe cases, exposure may cause corneal damage or temporary visual impairment.
Use of safety goggles or face shields is strongly recommended during handling, mixing, or processing.
Inhalation of vapors, aerosols, or fine droplets can irritate the nose, throat, and respiratory tract, causing coughing, sore throat, and shortness of breath.
In poorly ventilated areas or during spraying operations, exposure to airborne acrylates may trigger asthma-like symptoms, sensitization, or allergic respiratory reactions in susceptible individuals.
Proper ventilation, fume hoods, and respiratory protection are critical for safe handling.
