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The standard industrial reaction for producing methyl acrylate is esterification of acrylic acid with methanol under acid catalysis (sulfuric acid, p-toluenesulfonic acid or acidic ion exchangers. [7]). The transesterification is facilitated because methanol and methyl acrylate form a low boiling azeotrope (boiling point 62–63 °C). [8]
Methacrylic acid undergoes several reactions characteristic of α,β-unsaturated acids (see acrylic acid). These reactions include the Diels–Alder reaction and Michael additions. Esterifications are brought about by acid-catalyzed condensations with alcohols, alkylations with certain alkenes, and transesterifications.
Often, acrylate refers to esters of acrylic acid, the most common member being methyl acrylate. These acrylates contain vinyl groups . These compounds are of interest because they are bifunctional : the vinyl group is susceptible to polymerization and the carboxylate group carries myriad functionalities.
Acrylic acid undergoes the typical reactions of a carboxylic acid. When reacted with an alcohol, it forms the corresponding ester. The esters and salts of acrylic acid are collectively known as acrylates (or propenoates). The most common alkyl esters of acrylic acid are methyl, butyl, ethyl, and 2-ethylhexyl acrylate.
The reactions by the direct oxidation method consist of two-step oxidation of isobutylene or TBA with air to produce methacrylic acid and esterification by methanol to produce MMA. [10] CH 2 =C(CH 3) 2 or (CH 3) 3 C−OH + O 2 → CH 2 =C(CH 3)−CHO + H 2 O CH 2 =C(CH 3)CHO + ½ O 2 → CH 2 =C(CH 3)CO 2 H CH 2 =C(CH 3)CO 2 H + CH 3 OH → CH ...
Methyl acrylate; The anion of methacrylic acid This page was last edited on 4 February 2015, at 16:22 (UTC). Text is available under the Creative Commons Attribution ...
Dimethylaminoethyl acrylate (2-dimethylaminoethyl acrylate) or DMAEA is an unsaturated carboxylic acid ester having a tertiary amino group. It is a colorless to yellowish, water-miscible liquid with a pungent, amine-like odor. DMAEA is an important acrylic monomer that gives basic properties to copolymers.
The first acrylic acid was created in 1843. Methacrylic acid , derived from acrylic acid , was formulated in 1865. The reaction between methacrylic acid and methanol results in the ester methyl methacrylate .