Recovery of succinimides from filter cakes

Details Recovery of succinimides from filter cakes Recovery of succinimides from filter cakes

1984-12-14

1988-09-20

Fisher, Richard V.

Liquid purification or separation

Processes

Separating

210770, 210772, B01D 3700, B01D 1200, C02F 100

Patent

active

047723998

ABSTRACT:
A process for recovering succinimide lubricating oil additives from filter cakes formed during filtration of the additives employing a siliceous filter aid. The filter cakes are mixed with an aqueous solution of a base acting material having a pH above about 10, the mixture is held at a temperature above about 150.degree. F. and settled to separate an upper succinimide containing phase which is recovered.

REFERENCES:
patent: 2828862 (1958-04-01), Johnson
patent: 3362533 (1968-01-01), Muller
patent: 3538179 (1970-11-01), Nelson
patent: 4260495 (1981-04-01), Bennoit et al.
patent: 4265780 (1981-05-01), Kimura et al.
patent: 4319980 (1982-03-01), Jenkins
patent: 4501670 (1985-02-01), Tyson et al.
patent: 4544491 (1985-10-01), Tyson et al.

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