Billy P Allen

US Patent:

52350673, Aug 10, 1993

Filed:

Nov 3, 1989

Appl. No.:

7/431053

Inventors:

Billy R. Allen - Bridge City TX
Bobby R. Martin - Beaumont TX
John A. Lemen - Port Arthur TX
Leonard A. Matthews - Port Arthur TX

Assignee:

Texaco Inc. - White Plains NY

International Classification:

C07D20740

US Classification:

548520

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 %.