Process for manufacturing polyalkenyl succinic anhydrides

Details Process for manufacturing polyalkenyl succinic anhydrides Process for manufacturing polyalkenyl succinic anhydrides

1976-04-05

1978-04-25

Jiles, Henry R.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07D30760

Patent

active

040862518

ABSTRACT:
A process for producing alkenyl substituted anhydrides which comprises introducing one mole of polypropene or polybutene having a number average molecular weight of 200-3000, 0.8-5.0 moles of the anhydride of an unsaturated dicarboxylic acid and 5-200 ppm of an additive which suppresses the formation of tarry materials and undesirable reaction side products and/or improves yield, into a reaction zone, reacting said materials at a temperature from about 150.degree. C to about 300.degree. C to form the alkenyl anhydride, distilling off and condensing the unreacted anhydride from the reaction mixture, recovering the alkenyl substituted anhydride, and returning at least a portion of the recovered unreacted anhydride to a reaction zone for reaction with an alkenyl material.

REFERENCES:
patent: 3202679 (1955-08-01), Andrewsen et al.
patent: 3231587 (1966-01-01), Rense
patent: 3412111 (1968-11-01), Irwin
patent: 3476774 (1969-11-01), Taweski et al.
patent: 3927041 (1975-12-01), Cengel et al.
patent: 3935249 (1976-01-01), Cengel et al.
patent: 3960900 (1976-06-01), Puskas et al.

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