Separation of (meth) acrylic acid by rectification

Details Separation of (meth) acrylic acid by rectification Separation of (meth) acrylic acid by rectification

1994-12-14

1999-10-05

Manoharan, Virginia

Distillation: processes, separatory

Adding material to distilland except water or steam per se

Organic compound

203DIG21, 562600, B01D 334, C07C 5144

Patent

active

059617900

ABSTRACT:
A process for the separation by rectification of (meth)acrylic acid from a mixture containing (meth)acrylic acid and an inert hydrophobic organic liquid having a boiling point higher than that of (meth)acrylic acid as main constituents and also lower aldehydes as secondary constituents, a primary amine and/or a salt thereof are added.

REFERENCES:
patent: 3725208 (1973-04-01), Maezawa et al.
patent: 3893895 (1975-07-01), Dehnert et al.
patent: 4828652 (1989-05-01), Schrapp
patent: 5196578 (1993-03-01), Kuragano et al.
patent: 5426221 (1995-06-01), Willersinn
patent: 5482597 (1996-01-01), Herbst et al.

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