| product_name | Trimethylolpropane triacrylate |
| CAS_number | 15625-89-5 |
| formula | C15H20O6 |
| molar_mass | 296.32 g/mol |
| density | 1.1 g/cm³ |
| boiling_point | >200°C (decomposes) |
| flash_point | 113°C |
| viscosity | 70-100 mPa·s at 25°C |
| refractive_index | 1.478 at 25°C |
| solubility_in_water | slightly soluble |
| appearance | colorless to pale yellow liquid |
| odor | slight ester-like odor |
| polymerization | may undergo auto-polymerization when exposed to light or heat |
| stability | stable under recommended storage conditions |
| vapor_density | 8.3 (air = 1) |
What is Trimethylolpropane triacrylate (TMPTA) and what are its main
uses?
Trimethylolpropane triacrylate (TMPTA) is a trifunctional monomer that is widely
used in the production of various UV-curable coatings, inks, and adhesives. It provides
excellent hardness, scratch resistance, and chemical resistance to the final
products.
How does TMPTA compare to other acrylate monomers in terms of
reactivity?
TMPTA is known for its fast curing speed and high reactivity, which makes it
a popular choice in UV-curable formulations. Its high functionality and low viscosity also
contribute to its superior performance compared to other acrylate monomers.
What are
the key benefits of using TMPTA in UV-curable applications?
Some key benefits of using
TMPTA in UV-curable applications include improved adhesion, excellent weatherability, and
reduced yellowing over time. It also offers high crosslinking density, which results in
enhanced mechanical properties of the final products.
How does TMPTA contribute to
the overall performance of UV-curable coatings?
TMPTA plays a crucial role in improving
the hardness, flexibility, and adhesion of UV-curable coatings. Its trifunctional structure
allows for the formation of a highly crosslinked network, which leads to superior chemical
and abrasion resistance.
Can TMPTA be used in combination with other monomers and
additives?
Yes, TMPTA is often used in combination with other monomers such as polyester
acrylates, epoxy acrylates, and monofunctional diluents to tailor the properties of
UV-curable formulations. Additives like photoinitiators and light stabilizers can also be
incorporated to enhance performance.
What are some typical applications of TMPTA in
the coating industry?
TMPTA is commonly used in the formulation of wood coatings, metal
coatings, plastic coatings, and automotive coatings. Its versatility and compatibility with
various substrates make it an ideal choice for a wide range of coating
applications.
How does the molecular structure of TMPTA influence its
properties?
The trifunctionality of TMPTA enables it to form a highly crosslinked network
upon polymerization, leading to improved mechanical strength and chemical resistance. Its
acrylate functionality also contributes to its reactivity and adhesion
characteristics.
What are some important considerations when formulating with
TMPTA?
When formulating with TMPTA, it is important to consider factors such as the
desired cure speed, film properties, and compatibility with other ingredients in the
formulation. Optimization of the UV-curing process parameters is also crucial to achieve the
desired coating performance.
In what ways can TMPTA help manufacturers improve the
sustainability of their coatings?
TMPTA can help manufacturers improve the sustainability
of their coatings by enabling the formulation of low-VOC (volatile organic compound) and
solvent-free systems. Its high reactivity allows for faster curing, leading to energy
savings and reduced environmental impact.
