Solvent dewaxing waxy hydrocarbon distillate oils using a combination wax-naphthalene condensate and poly-dialkylfumarate/vinyl acetate copolymer dewaxing aid

Patent · Tue Jul 24 04:00:00 EDT 1984

OSTI ID:6416329

Briens, C L; Sankey, B M

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.

• Assignee: Exxon Research and Engineering Co. (Canada)
• Patent Number(s): US 4461698
• OSTI ID: 6416329
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
ACETATES
AROMATICS
CARBOXYLIC ACID SALTS
CHEMICAL COMPOSITION
CONDENSED AROMATICS
COPOLYMERS
DEWAXING
DISTILLATES
ENERGY SOURCES
FOSSIL FUELS
FUELS
HYDROCARBONS
MOLECULAR STRUCTURE
MOLECULAR WEIGHT
NAPHTHALENE
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PETROLEUM
PETROLEUM DISTILLATES
PETROLEUM FRACTIONS
POLYMERS
QUANTITY RATIO
SEPARATION PROCESSES
SOLVENTS