Method for producing (meth) acrylic acid

Details Method for producing (meth) acrylic acid Method for producing (meth) acrylic acid

2008-01-15

2008-01-15

Puttlitz, Karl (Department: 1621)

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

Organic compounds

Carboxylic acids and salts thereof

Reexamination Certificate

active

11061019

ABSTRACT:
The present invention relates to a method for producing (meth)acrylic acid comprising a process of recovering (meth)acrylic acid as an aqueous (meth)acrylic acid from a (meth) acrylic acid-containing gas mixture produced by the catalytic gas phase oxidation of at least one reactant selected from the group consisting of propane, propylene, isobutylene and (meth) acrolein, and a system usable for the method.

REFERENCES:
patent: 3932500 (1976-01-01), Duembgen et al.
patent: 4147885 (1979-04-01), Shimizu et al.
patent: 2001/0007043 (2001-07-01), Machhammer et al.

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