| Trimethylpropane Triacrylate (TMPTA) is an very important acrylic ester with multifunctional teams monomers. The acrylic ester is widely used in the synthesis of special acrylic resins as copolymerization monomer, it is also used for rubber, plastics, textile and fiberfill bonding and as adhesives.Trimethylopropane triacrylate (TMPTA) was synthesized by the esterification reaction of trimethylolpmpane (TMP) and acrylic acid (AA) and catalyzed by catalyst NaHSO4 at 4.0:1 mole ratio of acrylic acid to trimethylolpropane using hydroquinone and p-hydroxyanisole as polymerization inhibitors, cyclohexane and toluene as water carrying agent. The influence of conditions on TMPTA yield such as temperature, reaction time and the amount of catalyst in the reaction yield were investigated. Two solid-acid catalysts had been found, sodium bisulfate and carbon-based solid acid catalyst, respectively. Towards range of temperature from 355 to 370K, using TsOH as catalyst, the reaction kinetics experiment had been done.The reaction kinetics was proved to be second order, and reaction activation energy, frenquency factor were calculated.At last, the esterification kinetic equation was-dcA/dt=6389.82e-39260/RT CACB under the temperature from 82℃to 97℃. Due to acrylic acid was excessive, so the extraction of acrylic acid had been investigated.The influences of different extractants, ratio of solvent and extraction series on the extraction efficiency had been studied separately.
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