Continuous manufacture of the 4th class salt

Japanese Patent JP5916629

B2

The invention provides a method of continuously producing high quality quaternized N,N-dialkylaminoethyl (meth)acrylates (DMAEA.MCQ) that has a long shelf life and which is stable in water. The method involves placing starting materials into a continuously stirred tank reactor in the presence of less than 6% water. This low amount of water causes two liquid phases to form and prevents unwanted side reactions. The denser liquid phase contains DMAEA.MCQ and the lighter phase contains the starting materials. Liquid from the denser phase is removed from a position where little of the lighter phase has been mixed in. The removed liquid then has any last traces of the starting materials reacted into DMAEA.MCQ and strips away any starting materials with a gas flow. The resulting liquid is high purity DMAEA.MCQ. Water can then safely be added to ease in the transport and use of the produced DMAEA.MCQ.

JPH06234710	PREPARATION OF AMINOALCOHOL
JPH10174874	AMINATION CATALYST FOR ALKYLENE OXIDE, ALCOHOL, ALDEHYDE AND KETONE
JPH09505314	[Title of Invention] Method for producing solid quaternized ester

Fair, Barbara E.
Reed, Peter Y.
Fel Fels, Leonard M.
Brahmah, Jr., Larry E.
Holada, Charles Jay.
Juan, Chen-San
Sawant, Kailas Bee.

JP2012550133A

May 11, 2016

January 21, 2011

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NALCO COMPANY

C07C213/02; C07C213/10; C07C219/08

JP59110660A
JP2008081443A
JP2002363144A
JP2012533634A
JP8268985A
JP2000229919A
JP3206067A

WO2011011352A1
WO2009090791A1
US20110021808
US20030023113

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