Process for the manufacture of 2-ethylhexyl acrylate

Details Process for the manufacture of 2-ethylhexyl acrylate Process for the manufacture of 2-ethylhexyl acrylate

2005-10-18

2005-10-18

Richter, Johann (Department: 1621)

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

Organic compounds

Carboxylic acid esters

Reexamination Certificate

active

06956130

ABSTRACT:
2-Ethylhexyl acrylate is manufactured according to a process for the direct esterification of acrylic acid with 2-ethylhexanol catalysed by sulphuric acid, the acrylic acid subjected to the esterification being stabilized by at least one stabilizing agent, the said esterification being followed by the neutralization by a base of the crude reaction mixture (B1) obtained, the resulting salts passing into the aqueous phase (A1) of the said mixture, the organic phase (O1) and the aqueous phase (A1) resulting from this neutralization being separated and the 2-ethylhexyl acrylate being recovered from the organic phase (O1). To suppress the emulsions which appear during the said neutralization, the stabilizer or stabilizers of acrylic acid is/are chosen with the exclusion of hydroquinone, in the absence of which the aqueous phase of the process is stabilized before and/or during the neutralization.

REFERENCES:
patent: 5093520 (1992-03-01), Nestler et al.
patent: 5510514 (1996-04-01), Fauconet et al.
patent: 5606102 (1997-02-01), Fauconet et al.
patent: 6458991 (2002-10-01), Paulus et al.

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