PHOTOMER 4061

PHOTOMER 4061 is mainly used in UV-curable coatings, inks, overprint varnishes, and adhesives where good flow, high reactivity, and balanced flexibility–hardness properties are required, especially in applications such as wood coatings, plastic coatings, and graphic arts.
PHOTOMER 4061 Resins is a difunctional acrylate of low viscosity and odor. 
PHOTOMER 4061 is a reactive monomer with good cure response, it forms films that are flexible, hard and glossy.

CAS Number: 42978-66-5
Molecular Formula: C15H24O6
Molecular Weight: 300.35
EINECS Number: 256-032-2

Synonyms: Tripropylene glycol diacrylate, Tri(propylene glycol) diacrylate, TRPGDA, Tripropylene Glycol Diacrylate (stabilized with MEHQ), Tri(propylene glycol) diacrylate, mixture of isomers, Acrylic acid, propylenebis(oxypropylene) ester, (1-Methyl-1,2-ethanediyl)bis(oxy(methyl-2,1-ethanediyl)) diacrylate, 2-Propenoic acid, (1-methyl-1,2-ethanediyl)bis(oxy(methyl-2,1-ethanediyl)) ester, 2-Propenoic acid, 1,3-propanediylbis(oxy-3,1-propanediyl) ester, 1,4,7-Trimethyl-3,6-dioxaoctamethylene diacrylate, 2-[2-(2-prop-2-enoyloxypropoxy)propoxy]propyl prop-2-enoate, 1-((1-((1-(Acryloyloxy)propan-2-yl)oxy)propan-2-yl)oxy)propan-2-yl acrylate, 2-{2-[2-(acryloyloxy)-1-methylethoxy]-1-methylethoxy}-1-methylethyl acrylate, TRPGDA;TRIPROPYLENE GLYCOL DIACRYLATE;2-propenoicacid,(1-methyl-1,2-ethanediyl)bis(oxy(methyl-2,1-ethanediyl))es;2-Propenoicacid,(1-methyl-1,2-ethanediyl)bis[oxy(methyl-2,1-ethanediyl)]ester;Photomer 4061;Tri(propylene glycol) diacrylate(TPGDA、TRPGDA);Tripropylene glycol diacrylate, 90%, mixture of isomers;Photomer 4061 G TF

PHOTOMER 4061 as a cause of occupational contact dermatitis, tripropylene glycol diacrylate (TPGDA) was contained in dental resins, in UV-cured inks and in nail eosmetics.
PHOTOMER 4061 is a commercial urethane acrylate–based reactive diluent / oligomer blend used in UV-curable and EB-curable formulations, and it is designed to reduce viscosity while maintaining good mechanical performance and fast curing speed in radiation-curing systems.
PHOTOMER 4061 typically contains multifunctional acrylate components that participate directly in polymerization, meaning it becomes part of the final crosslinked network rather than evaporating like a solvent, which helps improve hardness, chemical resistance, and abrasion resistance of cured coatings.

PHOTOMER 4061 exhibits good solvency and viscosity reducing characteristics with typical radiation curable oligomers and prepolymers.
PHOTOMER 4061 can generate homopolymers of moderate high tensile strength and reduced shrinkage.

It possesses reactivity, hardness, flexibility, yellowing resistance, adhesion and pigment wetting properties.
PHOTOMER 4061 is recommended for use in UV/EB topcoats for paper, wood, metals and flexible plastic films, clear coatings, overprint varnishes and pigmented systems where low viscosities are required to ensure proper flow out during high-speed processing.

PHOTOMER 4061 is a medium viscosity, nonvolatile, proprietary urethane acrylate oligomer blended with 20% PHOTOMER 4061 (TPGDA). 
This product exhibits good cure response and low odor. 
PHOTOMER 4061 is an excellent film former and contributes unique performance properties typical of urethane resins in UV/EB curable formulations.

PHOTOMER 4061 can be blended with mono- and multifunctional acrylate monomers to fine-tune viscosity and curing behavior.
By adjusting the formulation ratio, manufacturers can balance flow properties with final film hardness.
This flexibility makes the product suitable for many customized industrial coatings.

The urethane backbone in PHOTOMER 4061 improves impact resistance compared to purely acrylic reactive diluents.
This is particularly beneficial for coatings exposed to mechanical stress or repeated bending.
As a result, coated films are less likely to crack or delaminate.

In adhesive formulations, PHOTOMER 4061 enhances cohesive strength and bonding durability.
It contributes to strong internal network formation after UV curing.
This is useful for laminating films and assembling plastic components.

Boiling point : 361.58 °C (rough estimate)
Density : 1.03 g/mL at 25 °C (lit.)
Vapor density : >1 (vs air)
Vapor pressure : <0.01 mm Hg (20 °C)
Refractive index : n20/D 1.45 (lit.)
Flash point : >230 °F
Storage temperature : Amber vial, refrigerator, under inert atmosphere
Solubility : Chloroform, Methanol (slightly)
Form : Oil
Color : Colourless
Water solubility : 4 g/L at 20 °C
Stability : Light sensitive
Cosmetic ingredient functions : Plasticiser; Nail conditioning
InChI : InChI=1S/C15H24O6/c1-6-14(16)20-12(4)9-18-8-11(3)19-10-13(5)21-15(17)7-2/h6-7,11-13H,1-2,8-10H2,3-5H3
InChIKey : LJRSZGKUUZPHEB-UHFFFAOYSA-N
SMILES : CC(COC(C)COC(=O)C=C)OCC(C)OC(=O)C=C

PHOTOMER 4061 is a difunctional acrylate of low viscosity, low odour and moderate skin irritancy. 
A reactive monomer with good cure response, it forms films that are flexible, hard and glossy.
PHOTOMER 4061 exhibits good solvency and viscosity reducing characteristics with typical radiation curable oligomers and prepolymers.

PHOTOMER 4061 is formulated to provide good compatibility with a wide range of acrylate oligomers and monomers used in UV-curable systems.
This compatibility helps prevent phase separation and ensures uniform curing across the coating or ink film.
As a result, the final cured layer shows improved optical clarity and surface smoothness.

The material contributes to high crosslink density due to its multifunctional acrylate structure.
High crosslink density leads to increased hardness, scratch resistance, and solvent resistance.
At the same time, the urethane segments help maintain sufficient flexibility to reduce cracking.

PHOTOMER 4061 is often selected when both mechanical durability and fast curing are required.
It supports rapid polymerization under UV lamps with medium to high intensity.
This makes it suitable for high-speed industrial printing and coating lines.

In printing ink formulations, PHOTOMER 4061 improves adhesion to plastic films, paper, and coated substrates.
It also helps control ink viscosity and pigment dispersion stability.
These properties are important for achieving sharp images and consistent print quality.

In wood and furniture coatings, PHOTOMER 4061 contributes to tough and abrasion-resistant surfaces.
The cured films show good resistance to household chemicals and cleaning agents.
This improves the long-term durability and appearance of coated products.

From a formulation standpoint, PHOTOMER 4061 is considered a reactive component rather than an inert additive.
It chemically bonds into the polymer network during curing.
This reduces volatile organic compound (VOC) emissions compared to solvent-based systems.

PHOTOMER 4061 is compatible with common photoinitiators used in UV curing systems.
This ensures efficient radical generation and rapid network formation upon irradiation.
Good photoinitiator compatibility also helps achieve uniform curing through the film thickness.

From a processing perspective, PHOTOMER 4061 allows lower energy input for curing compared to less reactive resins.
This reduces operating costs and thermal stress on heat-sensitive substrates.
It is therefore suitable for coatings on plastics, thin films, and electronic components.

In electronics and optical applications, it may be used in protective coatings for circuit boards and displays.
The cured films provide moisture resistance and mechanical protection.
This helps improve reliability of sensitive electronic devices.

Uses Of PHOTOMER 4061:
PHOTOMER 4061 is a diacrylate monomer for use in UV-curable flexographic and silk-screen inks, wood-finish varnishes, coatings on plastics, etc.
PHOTOMER 4061 is widely used in UV-curable coatings for wood, plastics, and metal surfaces.
It provides good flow, fast curing, and durable surface properties after polymerization.

These features are important for furniture coatings, flooring finishes, and industrial protective layers.
In printing ink formulations, PHOTOMER 4061 functions as a reactive diluent and performance enhancer.
It helps control ink viscosity while participating in the curing reaction.

This improves print sharpness, adhesion, and resistance to rubbing and solvents.
PHOTOMER 4061 is applied in overprint varnishes to protect printed surfaces from abrasion and chemicals.
It forms a hard and transparent protective film after UV exposure.

This is especially useful in packaging and label applications.
In adhesive systems, PHOTOMER 4061 improves cohesive strength and bonding durability after curing.
It contributes to the formation of a strong crosslinked network.

Such properties are required in laminating adhesives and structural bonding of plastics.
PHOTOMER 4061 is also used in UV-curable coatings for electronic components and circuit boards.
The cured films provide moisture resistance and mechanical protection.

This helps improve the reliability and lifespan of electronic devices.
In graphic arts and decorative coatings, PHOTOMER 4061 enables high-gloss and smooth surface finishes.
It supports rapid processing on high-speed UV curing lines.

This is important for commercial printing and decorative film production.
Tripropylene Glycol Diacrylate is a microparticle used to study continuous-flow lithography of high-throughput microparticle synthesis.

PHOTOMER 4061 is used in UV-curable clear coats to enhance scratch and abrasion resistance.
It helps form a dense crosslinked network that protects the underlying substrate.
This is important for automotive interior parts and decorative plastic components.

In flexible packaging applications, PHOTOMER 4061 supports good adhesion to polymer films such as PET and PVC.
It maintains sufficient flexibility while still providing chemical resistance.
This balance is necessary to prevent cracking during bending and folding.

PHOTOMER 4061 is applied in protective coatings for optical and display components.
The cured layers are transparent and resistant to surface damage.
This improves durability of screens, lenses, and display covers.

In industrial flooring and surface sealing systems, PHOTOMER 4061 contributes to rapid curing and high mechanical strength.
Fast curing reduces downtime during installation and maintenance.
The resulting coatings show good resistance to wear and cleaning chemicals.

PHOTOMER 4061 is also used in 3D printing and additive manufacturing resins for UV-based printing technologies.
It improves resin reactivity and mechanical strength of printed parts.
This enables production of functional prototypes and end-use components.

In specialty coatings, PHOTOMER 4061 helps improve chemical resistance against oils, fuels, and cleaning agents.
This is important in industrial environments where surfaces are exposed to harsh conditions.
Such coatings are used on machinery parts, tools, and protective panels.

Safety Profile Of PHOTOMER 4061:
PHOTOMER 4061 may cause skin irritation and allergic skin sensitization upon repeated or prolonged contact.
Direct contact with liquid resin can lead to redness, itching, and dermatitis.
Protective gloves and suitable clothing should always be used during handling.

Eye contact with PHOTOMER 4061 can cause irritation, redness, and tearing.
Splashes may result in temporary visual discomfort.
Safety goggles or face shields are recommended when working with liquid formulations.

Inhalation of vapors or aerosols generated during processing may irritate the respiratory tract.
This is more likely to occur during spraying or heating of uncured resin.
Adequate ventilation or local exhaust systems should be used in production areas.

PHOTOMER 4061 is combustible and may burn when exposed to sufficient heat or open flame.
During combustion, it can release irritating and potentially toxic fumes.
Firefighting should be performed using foam, dry chemical, or carbon dioxide extinguishers.

The material can polymerize under exposure to heat or UV light in the absence of inhibitors.
Uncontrolled polymerization may generate heat and pressure buildup in closed containers.