Method for production of purified (meth)acrylic acid

Method for production of purified (meth)acrylic acid

The present invention relates to reducing corrosion of distillation equipment during azeotropic distillation of (meth)acrylic acid in the presence of dissolved copper, by providing aqueous (meth)acrylic acid having not more than 0.1% by weight formaldehyde, based on the total weight of the aqueous (...

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Hauptverfasser: BRIEGEL KEITH F, ELDER JAMES, MENDOZA JOY LYDON, DECOURCY MICHAEL STANLEY, JULIETTE JAMES JERRICK
Format: Patent
Sprache:eng
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ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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creator BRIEGEL KEITH F
ELDER JAMES
MENDOZA JOY LYDON
DECOURCY MICHAEL STANLEY
JULIETTE JAMES JERRICK
description The present invention relates to reducing corrosion of distillation equipment during azeotropic distillation of (meth)acrylic acid in the presence of dissolved copper, by providing aqueous (meth)acrylic acid having not more than 0.1% by weight formaldehyde, based on the total weight of the aqueous (meth)acrylic acid. The source of the copper may, for example, be copper-based polymerization inhibitors added to the aqueous (meth)acrylic acid and/or distillation equipment.
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subjects ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
title Method for production of purified (meth)acrylic acid
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