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US 6,150,458 AGranted
Process for preparing esters of (meth) acrylic acid
AssigneeBayer Aktiengesellschaft
InventorsJan Weikard, Wolfgang Fischer
Life of this patent
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Abstract
The present invention relates to a process for preparing (meth)acrylic acid esters by 1) reacting hydroxyl group-containing polyethers, polyesters or polyester ethers with (meth)acrylic acid in the presence of an acid esterification catalyst and a solvent to form (meth)acrylic acid esters, and 2) reacting the acid esterification catalyst acid and unreacted (meth)acrylic acid with a compound containing two or more epoxide groups in the presence of the solvent used in step 1).
Claims16
A process for preparing a (meth)acrylic acid ester which comprises
- 1) reacting a hydroxyl group-containing polyether, polyester or polyester ether with (meth)acrylic acid in the presence of an acid esterification catalyst and a solvent to form a (meth)acrylic acid ester, and
- 2) reacting the acid esterification catalyst acid and unreacted (meth)acrylic acid with a compound containing two or more epoxide groups in the presence of the solvent used in step 1).
Dependencies are inferred from the claim text.