Dewaxing waxy hydrocarbon oils using di-alkyl fumarate-vinyl laurate copolymer dewaxing aids

Patent · Tue Jun 10 04:00:00 EDT 1986

OSTI ID:5477263

Achia, B U; DeKraker, A R; Rossi, A

A method is described for dewaxing waxy hydrocarbon oils comprising mixing the waxy hydrocarbon oil feedstock with a dewaxing solvent and a dewaxing aid, the dewaxing aid comprising (A) a dialkyl fumarate-vinyl laurate copolymer having a number average molecular weight of about 30,000 or more, as determined by gel permeation chromatography; and (B) a second component selected from a wax-naphthalene condensation copolymer, dialkyl fumarate-vinyl acetate copolymer or an ethylene-vinyl acetate copolymer, components (A) and (B) being used in a ratio of (A) to (B) of 2/1 to 1/1, chilling the waxy hydrocarbon oil/dewaxing solvent/dewaxing aid combination to precipitate solid particles of wax therefrom, producing a slurry of wax/dewaxed oil dewaxing solvent/dewaxing aid, and separating the wax from the slurry and recovering a dewaxed oil.

• Assignee: Exxon Research and Engineering Co., Florham Park, NJ
• Patent Number(s): US 4594142
• OSTI ID: 5477263
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
ACETATES
ALKENES
AROMATICS
CARBOXYLIC ACID SALTS
CHROMATOGRAPHY
CONDENSED AROMATICS
COPOLYMERS
DEWAXING
ENERGY SOURCES
ETHYLENE
EXTRACTION
FOSSIL FUELS
FUELS
GEL PERMEATION CHROMATOGRAPHY
HYDROCARBONS
MIXING
MOLECULAR WEIGHT
NAPHTHALENE
ORGANIC COMPOUNDS
ORGANIC POLYMERS
OTHER ORGANIC COMPOUNDS
PETROLEUM
POLYMERS
PRECIPITATION
SEPARATION PROCESSES
SOLVENT EXTRACTION
SOLVENTS
WAXES