Green synthesis method of trimethylolpropane triacrylate

Abstract

The invention relates to a green synthesis method of trimethylolpropane triacrylate. The green synthesis method comprise following steps: 1, raw materials are introduced into a reactor, heating backflow treatment is carried out until no water is detected in an obtained backflow liquid, and cooling to room temperature is carried out; 2, a water washing phase obtained in a step 4 of a former batch is introduced into a reaction vessel for water washing, an obtained methane sulfonic acid water phase is concentrated, and is recycled back into a step 1 of a next batch; 3, a sodium hydroxide solutionis added to a reaction liquid obtained through water washing for washing, an obtained mixture is allowed to stand for layering, a sulfuric acid solution is added into an obtained alkali washing waterphase for adjusting, and underpressure distillation and rectification are carried out so as to obtain acrylic acid; 4, water is added into a material obtained after alkali washing for washing, 4-methoxyphenol is added, an obtained mixed solution is allowed to stand for layering, an obtained lower layer water washing phase is recycled back into a step 2 of a next batch; and 5, a reaction materialobtained through removing of water phase is introduced into an evaporator, and vacuum pumping is carried out so as to obtain a finished product. The advantages are that: recycling of a catalyst, excess acrylic acid raw material, and a solvent is realized respectively, production cost is reduced, and at the same time waste water emission is reduced.

Description

Technical field

[0001] The invention relates to a synthesis method of trimethylolpropane triacrylate, and in particular to a green synthesis process of trimethylolpropane triacrylate that can recover and recycle a catalyst, raw material acrylic acid and solvent. Background technique

[0002] Polyol acrylates are widely used in many fields such as photocurable coatings, inks, and polymer modification and cross-linking. Among them, trimethylolpropane triacrylate (TMPTA) is an important acrylate multifunctional monomer. , it can not only be used as a monomer for the synthesis of special resins, but also an excellent modifier or cross-linking agent for polymer polymerization systems. Due to the high double bond content and fast curing speed of trimethylolpropane triacrylate, it has become the most widely used and used multifunctional acrylate reactive diluent in the field of radiation curing. In addition, trimethylolpropane triacrylate has Acrylate is also a raw material for ma...