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- Address : Shanghai China
Introduction to the use of UV monomer HEMA-JINDUN CHEMICAL
UV Monomer
HEMA: full name: hydroxyethyl methacrylate, monofunctional UV active
monomer, more than HEA (hydroxyethyl acrylate) a methyl, greatly reducing the
irritation of HEA, low viscosity, high polarity, miscible with water, widely
used as UV coatings, inks and adhesives, water treatment agents and so on.
HEMA structural formula
Parameter.
| Melting point | -12 °C |
| Boiling point | 67 °C3.5 mm Hg(lit.) |
| density | 1.073 g/mL at 25 °C(lit.) |
| vapor density | 5 (vs air) |
| vapor pressure | 0.01 mm Hg ( 25 °C) |
| refractive index | n20/D 1.453(lit.) |
| Fp | 207 °F |
| storage temp. | 2-8°C |
| solubility | Chloroform, Methanol (Slightly) |
| form | Liquid |
| pka | 13.83±0.10(Predicted) |
| color | Clear |
| Odor | Ester like |
| Water Solubility | soluble |
| Sensitive | Air Sensitive |
| BRN | 1071583 |
| Stability: | Unstable - may polymerize in the absence of stabilizer. May be stabilized with, or contain small amounts of, diethylene glycol monomethacrylate, di(ethylene glycol)dimethacrylate, methacrylic acid. Incompatible with strong oxidizing agents, free radical initiators, peroxides, steel. Closed containers may explode if heated due to runaway polymer |
| InChIKey | WOBHKFSMXKNTIM-UHFFFAOYSA-N |
| CAS DataBase Reference | 868-77-9(CAS DataBase Reference) |
| NIST Chemistry Reference | 2-Hydroxyethyl methacrylate(868-77-9) |
| EPA Substance Registry System | 2-Hydroxyethyl methacrylate (868-77-9) |
Features.
1. miscible with water in any ratio, suitable for use in aqueous and dairy systems
2. With hydroxyl group, it has good adhesion to metal and plastic, improving the adhesion of the system
3. Improve the brittleness of the coating
4. improve the weatherability of the coating film, so that the coating film can maintain a high gloss under long-term use
5. low irritation compared to other monoclonal monomers, hazard label only Xi (irritating)
Disadvantages.
1. slow reaction speed, adding too much may cause problems such as incomplete curing of the paint film.
2. low vitrification of polymer and hydroxyl group, the superposition of the two, the water resistance of the coating will increase with the addition of HEMA, and a gradient of decrease.
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date
2022-10-10
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location
Shanghai, China
