Combinations of oil-soluble aliphatic copolymers with nitrogen derivatives of hydrocarbon substituted succinic acids are flow improvers for middle distillate fuel oils

Patent · Tue Apr 03 04:00:00 EST 1979

OSTI ID:6126780

Ilnyckyj, S

Combinations of an oil-soluble aliphatic copolymer having the property of a nucleator for wax crystallization e.g., an ethylene-vinyl acetate copolymer having a number average molecular weight within the range of 500 to 50,000, in combination with an oil-soluble hydrocarbyl substituted succinic acid which has been reacted with a nitrogen material to form either an amine salt or an amide or a mixture thereof wherein the hydrocarbyl groups contain 8 to 28, preferably 12 to 22, carbon atoms are useful in improving the cold flow properties of distillate hydrocarbon oils. The flow improvers for middle distillate fuel oils described are combinations of an oil-soluble aliphatic copolymer and an oil-soluble hydrocarboyl substituted succinic acid. The aliphatic copolymer has the property of being a nucleator for wax crystallization e.g., an ethylene - vinyl acetate copolymer having a number average molecular weight within the range of 500 to 50,000. the substituted succinic acid has been reacted with a nitrogen material to form either an amine salt or an amide or a mixture thereof. The hydrocarbyl groups on the succinic acid contain 8 to 28, preferably 12 to 22, carbon atoms. This combination of materials improves the cold flow properties of distillate hydrocarbon oils.

• Assignee: Exxon Research and Engineering Co.
• Patent Number(s): US 4147520
• OSTI ID: 6126780
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
023000* -- Petroleum-- Properties & Composition
04 OIL SHALES AND TAR SANDS
040500 -- Oil Shales & Tar Sands-- Properties & Composition
ACETIC ACID ESTERS
ADDITIVES
ALKENES
CARBOXYLIC ACID ESTERS
CARBOXYLIC ACIDS
COPOLYMERS
DICARBOXYLIC ACIDS
ESTERS
ETHYLENE
FUEL OILS
FUELS
HYDROCARBONS
OILS
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
OTHER ORGANIC COMPOUNDS
PETROLEUM PRODUCTS
POLYMERS
SUCCINIC ACID
VISCOSITY