Polyvinylpyrrolidone dewaxing aid for bright stocks

Patent · Tue May 20 00:00:00 EDT 1980

OSTI ID:5770716

Achia, B U; Shaw, D H

Polyvinylpyrrolidone having a number average molecular weight ranging from about 150,000 to 400,000 has been found to be an effective dewaxing aid for bright stock in ketone dewaxing processes. Using as little as 100 ppm based on the waxy oil can result in almost a 50% increase in the filter rate of the dewaxed oils from the wax.

• Assignee: Exxon Research And Engineering Co
• Patent Number(s): US 4203824
• OSTI ID: 5770716
• Resource Relation: Patent File Date: Filed date 22 Dec 1978
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
HYDROCARBONS
DEWAXING
COOLING
KETONES
PVP
SLURRIES
SOLVENTS
AMIDES
AZOLES
BLOOD SUBSTITUTES
DISPERSIONS
DRUGS
HEMATOLOGIC AGENTS
HETEROCYCLIC COMPOUNDS
LACTAMS
MIXTURES
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC POLYMERS
POLYMERS
POLYVINYLS
PYRROLES
PYRROLIDONES
SEPARATION PROCESSES
SUSPENSIONS
020400* - Petroleum- Processing