Continuous process for alkenyl succinimides

Details Continuous process for alkenyl succinimides Continuous process for alkenyl succinimides

1989-11-03

1993-08-10

Ivy, C. Warren

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

548545, 252 515A, C07D20740

Patent

active

052350673

ABSTRACT:
A continuous process has been found for producing hydroxyacylated alkenyl-substituted mono- and bis- succinimides. The Mannich phenol coupled compositions are produced continuously as well. In the imidization reaction, an alkenyl succinic anhydride is contacted with a polyamine to form mono- and bis- polyamino alkenyl succinimides in continuous stirred tank reactor for a residence time of 1 to 3 hours. The reaction product is then, optionally Mannich base coupled. Finally, in the amidization, the mono- and bis- polyamino alkenyl succinimide is contacted with an acylating agent such as hydroxyacetic acid. Contacting is carried out in a continuous stirred tank reactor for a residence time of 3 to 6 hours. A hydroxyacylated alkenyl-substituted mono- and bis- succinimide product free of haze is produced in the absence of filtering, by reducing water continuously in all three reactors to a concentration of 0.4 wt %.

REFERENCES:
patent: 4364846 (1982-12-01), Kaufman
patent: 4636322 (1987-01-01), Nalesnik et al.
patent: 4699724 (1987-10-01), Nalesnik et al.
patent: 4713189 (1987-12-01), Nalesnik et al.

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