Combination of ethylene polymer, polymer having alkyl side chains, and nitrogen containing compound to improve cold flow properties of distillate fuel oils
A description is given of a wax-containing petroleum fuel oil comprising a major proportion of a distillate oil boiling in the range of 120 to 500/sup 0/C, which fuel oil has been improved in its low temperature flow properties, containing in the range of about 0.001 to 0.5 wt. %, based on the weight of the total composition, of a flow improving combination of: (A) one part by weight of an oil-soluble ethylene backbone distillate flow improving polymer having a number average molecular weight in the range of about 500 to 50,000; (B) 0.1 to 10 parts by weight of a second oil-soluble polymer of monomers other than ethylene, having a molecular weight in the range of about 1000 to 200,000 wheren at least 10% by weight of said polymer is in the form of straight chain alkyl groups having 6 to 30 carbon atoms, said polymer comprising unsaturated ester, or unsaturated ester and olefin, monomer moieties, said moieties comprising a major weight proportion of said polymer; and (C) 0.01 to 10 parts by weight of an oil soluble nitrogen compound containing a total of about 30 to 300 carbon atoms and having at least one straight chain alkyl segment of 8 to 40 carbons, and selected from the class consisting of amine salts and/or amides of hydrocarbyl carboxylic acids or anhydrides having 1 to 4 carbonyl groups.
- Assignee:
- Exxon Research and Engineering Co
- Patent Number(s):
- US 4211534
- OSTI ID:
- 5041148
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
023000* -- Petroleum-- Properties & Composition
ADDITIVES
AMIDES
AMINES
CHEMICAL COMPOSITION
COPOLYMERS
ESTERS
FLOW RATE
FUEL ADDITIVES
FUEL OILS
FUELS
HEATING OILS
LIQUID FUELS
LOW TEMPERATURE
OILS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC POLYMERS
OTHER ORGANIC COMPOUNDS
PETROLEUM PRODUCTS
POLYACRYLATES
POLYETHYLENES
POLYMERS
POLYOLEFINS
POLYVINYLS
VISCOSITY