Combinations of oil-soluble aliphatic copolymers with nitrogen derivatives of hydrocarbon substituted succinic acids are flow improvers for middle distillate fuel oils
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
- Resource Relation:
- Patent File Date: Filed date 16 Mar 1977
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
04 OIL SHALES AND TAR SANDS
COPOLYMERS
FUEL OILS
ADDITIVES
VISCOSITY
ACETIC ACID ESTERS
ETHYLENE
SUCCINIC ACID
ALKENES
CARBOXYLIC ACID ESTERS
CARBOXYLIC ACIDS
DICARBOXYLIC ACIDS
ESTERS
FUELS
HYDROCARBONS
OILS
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
OTHER ORGANIC COMPOUNDS
PETROLEUM PRODUCTS
POLYMERS
023000* - Petroleum- Properties & Composition
040500 - Oil Shales & Tar Sands- Properties & Composition