Urea dewaxing of low n-paraffin content oils

Details Urea dewaxing of low n-paraffin content oils Urea dewaxing of low n-paraffin content oils

1974-06-28

1976-03-23

Levine, Herbert

Mineral oils: processes and products

Paraffin wax; treatment or recovery

With ureas

260 965C, C10G 4304

Patent

active

039459128

ABSTRACT:
Mineral oils containing small amounts (less than 2 weight percent) of normal paraffins may be urea dewaxed to produce refrigerator oils having Freon cloud or flock points of at least minus 55.degree.C. by utilizing large excesses of the amount of crystalline urea theoretically required for complete conversion of the n-paraffins into solid adduct and conducting the adduct formation under conditions of vigorous agitation.

REFERENCES:
patent: 2560193 (1951-07-01), Shoemaker
patent: 2731391 (1956-01-01), Salzmann
patent: 3600297 (1971-08-01), Franz et al.
patent: 3847791 (1974-11-01), Kunert et al.

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