THE PRODUCTION OF N,N-DIALKYLAMINOETHYL (METH)ACRYLATES

Title:

THE PRODUCTION OF N,N-DIALKYLAMINOETHYL (METH)ACRYLATES

Document Type and Number:

WIPO Patent Application WO/2010/135092

Kind Code:

A3

Abstract:

A method and apparatus for preparing a N,N-dialkylaminoalkyl acrylate in a continuous transesterification reaction. The reaction involves adding alkyl acrylates such as methacrylate or ethacrylate to a reboiler mechanism and efficiently removing alcohol co-products. Because the reaction is continuous, the alkyl acrylates can be added as needed to increase output, decrease output, or fine-tune the reaction dynamics. An entrainer is used to form a volatile azeotrope which contains both alcohol and entrainer and which is easily removed from the reboiler mechanism. This method reduces the amount of entrainer needed per unit of alkyl acrylate used and eliminates any need to purify the end product from entrainer contamination of the resulting N,N-dialkylaminoalkyl acrylate product.

Inventors:

BRAMMER JR LARRY E (US)
FAIR BARBARA E (US)
HUANG CHENG-SUNG (US)
QUACH LINH (US)
VER VERS LEONARD M (US)
REED PETER E (US)

Application Number:

PCT/US2010/033980

Publication Date:

February 24, 2011

Filing Date:

May 07, 2010

Export Citation:

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Assignee:

NALCO CO (US)
BRAMMER JR LARRY E (US)
FAIR BARBARA E (US)
HUANG CHENG-SUNG (US)
QUACH LINH (US)
VER VERS LEONARD M (US)
REED PETER E (US)

International Classes:

C07C213/08; C07C213/10; C07C219/08; C07C219/20

Domestic Patent References:

WO2008125787A1

2008-10-23

Foreign References:

JPS54163517A	1979-12-26
US20060287550A1	2006-12-21
US4851568A	1989-07-25

Other References: