Synthetic method of allyl acrylate

Abstract

The invention discloses a new synthetic method of allyl acrylate. According to the method, an organic silicon monomer with functional groups is used, and the allyl acrylate is prepared under the soft reaction condition. The synthetic method of the allyl acrylate includes three steps that (1) acryloxytrimethylsilane is synthesized; (2) allyloxy silane is synthesized; and (3) the acryloxytrimethylsilane and the allyloxy silane are mixed. According to the raw materials used in a reaction, chlorine elements are fully converted into inorganic salt, low-boiling-point chloride like phosphorus trichloride is not used, and it is guaranteed that the chlorine elements are not contained in a prepared product; reaction conditions are soft, and the requirement for the equipment is not high; purification is easy, boiling points of all components are large in difference, and reduced pressure distillation separation is easy; water washing is not needed, and amplification is easy; and trifluoromethanesulfonic acid serves as a catalyst, the high acidity is achieved, and double bonds cannot be damaged.

Description

technical field

[0001] The invention relates to a method for synthesizing monomeric substances in the field of photocuring, in particular to a method for synthesizing a special acrylate—allyl acrylate. Background technique

[0002] Acrylates generally refer to ester compounds formed by the dehydration condensation of acrylic acid and alcohols (see Equation 1). This type of compound has acryloyloxy groups, so it can be used as a photocuring active monomer and is widely used in the field of photocuring.

[0003] (1)

[0004] The reaction is catalyzed by a strong acid. Higher alcohols react with acrylic acid in organic solvents, such as benzene, toluene, cyclohexane, n-heptane, etc., and water and organic solvents can form azeotropes to continuously remove water from the system. Excluded, so that the reaction continues to the right, the advantage is that the raw materials are easy to get, the device is simple, and can be easily scaled up, the disadvantage is that the use of...