One-step-feeding method for preparing phthalic-anhydride-modified epoxy acrylate, and formula thereof

Abstract

The invention provides a one-step-feeding method for preparing phthalic-anhydride-modified epoxy acrylate, and a formula thereof. The finished product is prepared from the components of, by weight, 32.4% of epoxy resin 128, 24.7% of phthalic anhydride, 22.45% of a reactive diluent, 20.1% of hydroxyethyl acrylate, 0.21% of a catalyst, 0.06% of a polymerization inhibitor, and 0.08% of an anti-oxidant, wherein an optional variable range of the amounts of epoxy resin 128, reactive diluent, phthalic anhydride, and hydroxyethyl acrylate is respectively 0.15%, and an optional variable range of the amounts of the catalyst, the polymerization inhibitor, and the anti-oxidant is respectively 0.005%. A synthesizing method is the one-step feeding method. During the entire reaction process, through the optimal control and adjustment upon process parameters such as acid value, temperature, nitrogen flow and reaction time, the phthalic-anhydride-modified epoxy acrylate finished product with stable application performance, stable storage performance, moderate viscosity, and water-white transparent color is obtained.

Description

technical field [0001] The invention relates to chemical products and a preparation method thereof, in particular to a method for preparing phthalic anhydride-modified epoxy acrylate by a one-step feeding method and a formula thereof. Background technique [0002] The existing process adopts a step-by-step feeding method: put in hydroxyethyl acrylate and phthalic anhydride and heat them to react at 110°C, judge which stage the reaction has progressed according to the detected acid value; after the first step of reaction is in place, cool the materials to 90 ℃, and then put in epoxy resin 128 for temperature rise reaction until the acid value drops to 2.0-2.5mgKOH / g. The defect of this preparation method: after the first step reaction finishes, need to cool down and just can drop into epoxy resin 128, because the reaction speed of epoxy resin and intermediate is very fast under high temperature; The feeding method adopted by a large-scale factory is difficult to operate; if ...

AI Technical Summary

Problems solved by technology

The defect of this preparation method: after the first step reaction finishes, need to cool down and just can drop into epoxy resin 128, because the reaction speed of epoxy resin and intermediate is very fast under high temperature; The feeding method adopted by a large-scale factory is difficult to operate; if the manhole is opened and epoxy resin 128 is poured through the manhole, the materials in the reactor will be emitted under high temperature conditions, causing serious pollution to the working environment on site, and long-term contact may even cause serious harm to the human body

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