Demulsification of bitumen emulsions using salts of poly (tertiaryamino) polyurethanes

Patent · Tue Sep 06 00:00:00 EDT 1983

OSTI ID:5598141

McCoy, D R

A process for recovering bitumen from oil-in-water (O/W) emulsions is disclosed wherein water-soluble demulsifiers are used. These demulsifiers are salts of poly (tertiary amino) polyurethanes prepared by the reaction of polyisocyanates with diols containing at least one tertiary amino group which reaction product is then reduced in pH until water solubility is attained. To resolve the bituminous petroleum emulsions, the process is carried out between 25/sup 0/ and 160/sup 0/C. wherein the demulsifier of the invention is contacted with the bituminous emulsion.

• Assignee: Texaco Inc.
• Patent Number(s): US 4402363
• OSTI ID: 5598141
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400 -- Petroleum-- Processing
04 OIL SHALES AND TAR SANDS
040402* -- Oil Shales & Tar Sands-- Surface Methods
BITUMENS
BITUMINOUS MATERIALS
CARBONACEOUS MATERIALS
COLLOIDS
DEMULSIFICATION
DISPERSIONS
EMULSIONS
ENERGY SOURCES
FOSSIL FUELS
FUELS
MATERIALS
OIL SANDS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
OTHER ORGANIC COMPOUNDS
PETROCHEMICALS
PETROLEUM
PETROLEUM PRODUCTS
PLASTICS
POLYAMIDES
POLYMERS
POLYURETHANES
RECOVERY
SYNTHETIC MATERIALS
TAR