Process for production of polyisobutenylsuccinic anhydrides with

Details Process for production of polyisobutenylsuccinic anhydrides with Process for production of polyisobutenylsuccinic anhydrides with

1996-02-14

1998-04-14

Dentz, Bernard

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

548546, 564204, C07D30760

Patent

active

057393559

ABSTRACT:
An alkenyl anhydride or polyalkenylsuccinic anhydride is prepared without forming resins, by an ene-synthesis reaction between an olefin or a polyolefin and a maleic anhydride, optionally substituted by one or two methyl groups, in an aromatic solvent that is selected from toluene and xylenes, whereby said anhydride is used at a ratio of 30 to 60% by weight relative to the reaction medium.
More particularly, polyisobutenylsuccinic anhydrides which can be used to form, by reaction with polyethylene polyamines, compositions that contain polyisobutenylsuccinimides, used as detergent additives for motor fuels or as ashless dispersants for motor oils, are produced.

REFERENCES:
patent: 4086251 (1978-04-01), Cengel et al.
patent: 4605808 (1986-08-01), Samson
patent: 5041622 (1991-08-01), LeSuer
Puskas et. al., J. Polymer Sci. Symposium No. 56, pp. 191-202, 1976.
Danilenko et al., Neftepererab. Neftekhim (Kiev), No. 8, pp. 43-46 (1972).

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