Styrene-dialkyl maleate copolymers as dewaxing agents

Details Styrene-dialkyl maleate copolymers as dewaxing agents Styrene-dialkyl maleate copolymers as dewaxing agents

1985-05-31

1986-01-14

Doll, John

Mineral oils: processes and products

Paraffin wax; treatment or recovery

Separation of paraffin from oil

C10G 7304

Patent

active

045644381

ABSTRACT:
A solvent dewaxing process for dewaxing waxy lubricating oil with a dewaxing solvent and a dewaxing aid which comprises using as the dewaxing aid a styrene dialkyl maleate copolymer wherein the side chain groups contain from C.sub.16 -C.sub.24.sup.+ carbon atoms. These polymers are further characterized as having a molecular weight within the range of 10,000-150,000.

REFERENCES:
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patent: 3458430 (1969-07-01), Henselman et al.
patent: 3729296 (1973-04-01), Miller
patent: 4073738 (1978-02-01), Ladenberger et al.
patent: 4460453 (1984-07-01), Gudelis et al.
patent: 4496691 (1985-01-01), Proux et al.

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