Method for production of acrylic acid

Details Method for production of acrylic acid Method for production of acrylic acid

2008-01-22

2008-01-22

Puttlitz, Karl (Department: 1621)

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

Organic compounds

Carboxylic acids and salts thereof

C562S532000, C562S545000

Reexamination Certificate

active

07321060

ABSTRACT:
A method for the production of acrylic acid of high concentration by absorbing acrylic acid with high absorption ratio of acrylic acid is provided. In a method for producing acrylic acid by a procedure comprising a step of catalytic gas phase oxidation reaction and a step of absorbing the acrylic acid-containing gas, while a low boiling substance-containing solution is introduced into the absorption column via a portion different from the top of the column.

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Office Action issued Feb. 16, 2007 for the corresponding Chinese Patent Application No. 200410063128.9; Applicant: Nippon Shokubai Co., Ltd.; Application Date: Jun. 4, 2004.

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