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Trihydroxymethylpropane
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Trimethylolpropane trimethacrylate (TMPTMA) is a cross-linking agent. It is very stable in water because it hydrolyzes very slowly. However, TMPTMA is inherently biodegradable. It can be assumed that TMPTMA is also biodegradable in soil and sediment and thus can be considered non-persistent in soil and sediment. Trimethylolpropane trimethacrylate photodegrades rapidly in air.
| chemical properties | Trimethylolpropane trimethacrylate (TMPTMA) is a cross-linking agent. It is very stable in water because it hydrolyzes very slowly. However, TMPTMA is inherently biodegradable. It can be assumed that TMPTMA is also biodegradable in soils and sediments and therefore can be considered non-persistent in soils and sediments. Trimethylolpropane trimethacrylate photodegrades rapidly in air.  Trimethylolpropane trimethacrylate was used to prepare macroporous poly(glycidyl methacrylate-co-trimethylolpropane trimethacrylate) materials with finely controlled porosity. |
| feature | Trimethylolpropane trimethacrylate is a typical trifunctional monomer, its viscosity is higher than that of monofunctional and difunctional monomers, but compared with multifunctional monomers, its viscosity is relatively low, and it has good solubility sex. The monomer has high cure speed and high cross-link density to form hard, scratch-resistant, brittle cured films with excellent solvent resistance. Its price is relatively low, and although it is irritating to the skin, it is still the most commonly used multifunctional monomer. It is ideal for a variety of coatings, anaerobic adhesives and composite applications. |
| use | Trimethylolpropane trimethacrylate (TMPTMA) is used in the chemical industry as an intermediate in polymer synthesis. It is a reactive trifunctional methacrylate suitable for a variety of polymer cross-linking functions. TMPTMA is particularly useful as an additive in PVC plastisols, plasticizer systems and elastomers. Other applications include as an additive in water-based emulsions, adhesives and UV/EB curable coatings. |
| Prepare | Synthesis of trimethylolpropane trimethacrylate: 40.25g (0.3mol) trimethylolpropane and 90.41g (1.05mol) methacrylic acid were added respectively to a reflux condenser, water separator, thermometer, stirrer and air sampling device in the reactor to inhibit polymerization. Aqua 0.39g (by hydroquinone: phenothiazine=2: 1 mass ratio preparation), CZ zirconium-based solid acid catalyst 1.21g, and aqua 100ml (by toluene: cyclohexane=45: 55 The volume ratio of preparation) is gradually increased to 85±5°C while stirring, the flow rate of air in the reactor is kept at 7ml/min, and the reaction is carried out at a temperature of 90-100°C for 5 hours (when the water agent brings out the unreacted The reaction end point is when water is generated), and the filter residue obtained by filtering the reaction liquid is the CZ zirconium-based solid acid catalyst (recycled and reused). Add 2g of activated carbon to the reaction mother liquor, stir and heat up to 45±5°C, keep warm for 15 minutes, filter while hot, remove the activated carbon, and evaporate the filtrate under reduced pressure to obtain the target product trimethylolpropane trimethacrylate. 110g, purity 98.2%, acid value ≤0.5 mg/g (acid value detection method is determined according to GB 1668-8 method), esterification rate 98.2%. The filtrate after removing the activated carbon is evaporated under reduced pressure to obtain the target product trimethylolpropane trimethacrylate. 110g, purity 98.2%, acid value ≤0.5mg/g (acid value detection method is determined according to GB 1668-8 method), esterification rate 98.2%. The filtrate after removing the activated carbon is evaporated under reduced pressure to obtain the target product trimethylolpropane trimethacrylate. 110g, purity 98.2%, acid value ≤0.5 mg/g (acid value detection method is determined according to GB 1668-8 method), esterification rate 98.2%. |
| definition | ChEBI: Trimethylolpropane trimethacrylate is a carbonyl compound. |
| general instructions | Trimethylolpropane trimethacrylate is a carbonyl compound. |
| Flammability and explosiveness | non-flammable |
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