Method for producing acrylic acid

Details Method for producing acrylic acid Method for producing acrylic acid

2008-06-03

2008-06-03

Zucker, Paul A (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acids and salts thereof

C562S598000

Reexamination Certificate

active

07381839

ABSTRACT:
The objective of the present invention is to provide method for acrylic acid in which a generation of polymerized substance is prevented while acrylic acid is stored in a storage tank. A method of the present invention for producing acrylic acid, comprising storing acrylic acid in a storage tank, wherein a process liquid containing 50 mass % or more of acrylic acid is subjected to at least one filtering operation at 15 to 70° C. when the process liquid is supplied to the storage tank.

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