Polyvinylpyrrolidone dewaxing aid for bright stocks
Patent
·
OSTI ID:5770716
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
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
02 PETROLEUM
020400* -- Petroleum-- Processing
AMIDES
AZOLES
BLOOD SUBSTITUTES
COOLING
DEWAXING
DISPERSIONS
DRUGS
HEMATOLOGIC AGENTS
HETEROCYCLIC COMPOUNDS
HYDROCARBONS
KETONES
LACTAMS
MIXTURES
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC POLYMERS
POLYMERS
POLYVINYLS
PVP
PYRROLES
PYRROLIDONES
SEPARATION PROCESSES
SLURRIES
SOLVENTS
SUSPENSIONS
020400* -- Petroleum-- Processing
AMIDES
AZOLES
BLOOD SUBSTITUTES
COOLING
DEWAXING
DISPERSIONS
DRUGS
HEMATOLOGIC AGENTS
HETEROCYCLIC COMPOUNDS
HYDROCARBONS
KETONES
LACTAMS
MIXTURES
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC POLYMERS
POLYMERS
POLYVINYLS
PVP
PYRROLES
PYRROLIDONES
SEPARATION PROCESSES
SLURRIES
SOLVENTS
SUSPENSIONS