Solvent dewaxing waxy hydrocarbon distillate oils using a combin

Details Solvent dewaxing waxy hydrocarbon distillate oils using a combin Solvent dewaxing waxy hydrocarbon distillate oils using a combin

1982-09-29

1984-07-24

Gantz, Delbert E.

Mineral oils: processes and products

Paraffin wax; treatment or recovery

Separation of paraffin from oil

L10G 7304

Patent

active

044616988

ABSTRACT:
This invention relates to solvent dewaxing processes for dewaxing waxy hydrocarbon oil distillates employing a dewaxing aid which dewaxing aid is a mixture of (a) a poly-dialkylfumarate/vinyl acetate copolymer and (b) a wax-naphthalene condensation product. Component (a) has pendent alkyl side chain groups of from 16 to 30 carbon atoms in length (excluding branching) with an average pendent side chain carbon length of predominantly (>50%) C.sub.22. Component (a) has a number average molecular weight of from about 1,000 to 100,000 preferably greater than about 5,000. Component (b) has a number average molecular weight of at least about 1,000. The combination (a) and (b) may be employed in a weight ratio (A)/(B) within the range from about 1/10 to 20/1 preferably about 1/3 to 6/1 most preferably about 3/1 and at an aid dose level ranging from about 0.005 to 2.0 wt. % preferably 0.01 to 0.2 wt. % active ingredient.

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