Preparation method of tert-butyl (methyl)acrylate

Abstract

The invention provides a preparation method of tert-butyl (methyl)acrylate. (Methyl)acrylic acid and isobutylene are subjected to addition reaction under the action of an acidic catalyst to generate the tert-butyl (methyl)acrylate. The technique belongs to an ideal atomic economic reaction, simplifies the process route, and needs fewer appliances. Besides, no byproduct is generated in the whole preparation process, so the method is a low-carbon environment-friendly technique. The adopted acidic catalyst is non-toxic and harmless, so the production process is environment-friendly. Therefore, the olefine acid addition esterification method can be widely used and is suitable for substituting the alkyd esterification method.

Description

technical field [0001] The invention relates to the field of chemical industry for preparing esters by an alkenoic acid method, in particular to a method for preparing tert-butyl (meth)acrylate. Background technique [0002] Tert-butyl (meth)acrylate is a very important chemical basic raw material and intermediate, because of its unique and highly active polar molecules, unsaturated double bonds and carboxylate (-COOR) structure, it can be Many kinds of polymer formulas with good properties are derived, and plastic, cross-linked and other polymers are prepared through emulsion polymerization, solution polymerization, copolymerization and other processing methods. It can also be self-polymerized or copolymerized with other vinyl monomers, such as styrene, vinyl acetate, methyl methacrylate, acrylonitrile, acrylamide, vinyl chloride, etc. The polymer obtained by polymerizing the carbon-carbon double bond of (meth) tert-butyl acrylate is colorless and transparent, and has exce...

AI Technical Summary

Problems solved by technology

This process has problems such as equipment corrosion, side reactions and difficult disposal of reaction waste liquid.

In addition, in the process of preparing tertiary alcohol esters by esterification of carboxylic acids and corresponding alcohols, because tert-butanol has a relatively large steric hindrance effect, it is more inclined to the elimination reaction in the two competing reactions of esterification and elimination, and cannot reach The purpose of esterification, so the esterification of tertiary alcohols is much more difficult than primary alcohols and secondary alcohols, and the yield of the actual reaction is very low

Images