Preparation of (meth)acrylic acid esters
AssigneeEvonik Operations GmbH
InventorsMarcel Treskow, Silvia Beyer, Thorben Schütz, Steffen Krill
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Abstract
The invention relates to a method for preparation of (meth)acrylic acid esters from (meth)acrylic acid anhydrides. The method involves: reacting a (meth)acrylic acid anhydride of Formula (I): wherein R1 is a hydrogen atom or a methyl group; with a substrate in the presence of a first catalyst to form a product mixture comprising the (meth)acrylic acid ester; and wherein: the substrate is selected from the group consisting of: primary alcohols; secondary alcohols; tertiary alcohols; and phenols; and the first catalyst comprises a salt of magnesium or of a rare earth element.
Claims19
A process for the preparation of a (meth)acrylic acid ester, comprising at least step (a) as follows:
- (a) reacting a (meth)acrylic acid anhydride of Formula (I):
- wherein R1 is a hydrogen atom or a methyl group;
- with a substrate in the presence of a first catalyst to form a product mixture comprising the (meth)acrylic acid ester;
- and wherein:
- the substrate is a primary alcohol having one hydroxyl group;
- and
- the first catalyst comprises a halide of magnesium;
- wherein the temperature during step (a) is kept between 60° C. and 90° C.
A process for the preparation of a (meth)acrylic acid ester, comprising at least step (a) as follows:
- (a) reacting a (meth)acrylic acid anhydride of Formula (I):
- wherein R1 is a hydrogen atom or a methyl group;
- with a substrate in the presence of a first catalyst to form a product mixture comprising the (meth)acrylic acid ester;
- and wherein:
- the substrate is a secondary alcohol having one hydroxyl group or a tertiary alcohol having one hydroxyl group;
- and
- the first catalyst comprises a halide of magnesium;
- wherein the temperature during step (a) is kept between 60° C. and 90° C.
Dependencies are inferred from the claim text.