Increasing viscosity storage stabiity of Mannich base dispersant

Details Increasing viscosity storage stabiity of Mannich base dispersant Increasing viscosity storage stabiity of Mannich base dispersant

1988-10-20

1990-10-16

Chaudhuri, Olik

Compositions

Electrolytes for electrical devices

252 55, 252 515R, C10M10558

Patent

active

049632779

ABSTRACT:
A method is described for improving the viscosity storage stability of a Mannich base condensation product of an oxidized polyolefin, formaldehyde, and an amine. This method involves contacting such Mannich base condensation product with a lower alkyl peroxide, a lower alkyl hydroperoxide or an aryl(lower)alkyl hydroperoxide at a temperature of about 250.degree. F. to about 400.degree. F. for a time period sufficient to provide an oxidized product.

REFERENCES:
patent: 3872019 (1975-03-01), Culbertson
patent: 4379064 (1975-04-01), Cengal
patent: 4455244 (1984-06-01), Smyser

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