The use of dialkyl fumarate-vinyl acetate copolymers as dewaxing aids

Patent · Tue Jun 02 00:00:00 EDT 1987

OSTI ID:6381513

Dekraker, A R; Martella, D J

This patent describes a dewaxing process wherein a dewaxing aid is mixed with a waxy petroleum stock and solvent, and chilled to produce a slurry comprising dewaxed oil and solvent along with solid particles of wax, and filtered to separate the dewaxed oil and solvent from the wax particles. The improvement comprises using as a dewaxing aid a copolymer of dialkyl fumarate and vinyl acetate having a Specific Viscosity measured at 2 wt.% solution in xylene at 40/sup 0/C of at least 2.5, and wherein 50 to 100 wt.% of the alkyl groups are C/sub 20/ to C/sub 24/ alkyl groups.

• Assignee: Exxon Research and Engineering Co., Florham Park, NJ
• Patent Number(s): US 4670130
• OSTI ID: 6381513
• Resource Relation: Patent File Date: Filed date 14 Mar 1984
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
PETROLEUM
ADDITIVES
DEWAXING
ACETATES
ALKYL RADICALS
COPOLYMERS
FILTRATION
MIXING
QUANTITY RATIO
SLURRIES
SOLVENTS
VINYL MONOMERS
VISCOSITY
WAXES
XYLENES
ALKYLATED AROMATICS
AROMATICS
CARBOXYLIC ACID SALTS
DISPERSIONS
ENERGY SOURCES
FOSSIL FUELS
FUELS
HYDROCARBONS
MIXTURES
MONOMERS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
OTHER ORGANIC COMPOUNDS
POLYMERS
RADICALS
SEPARATION PROCESSES
SUSPENSIONS
020400* - Petroleum- Processing