Methods and compositions for improvement of low temperature flui

Details Methods and compositions for improvement of low temperature flui Methods and compositions for improvement of low temperature flui

1997-09-12

1999-01-12

Howard, Jacqueline V.

Fuel and related compositions

Liquid fuels

Containing organic -c

44403, C10L 118

Patent

active

058572872

ABSTRACT:
Adding to a fuel oil a composition of from about 1 to about 40 parts by weight ethylene/vinyl acetate copolymer having a vinyl acetate content of from about 10% by weight to about 50% by weight and a weight average molecular weight of from about 2,000 to about 10,000, and 1 part by weight esterified copolymer of at least one generally linear .alpha.-olefin of from about 18 to about 50 carbon atoms and maleic anhydride in an .alpha.-olefin to maleic anhydride molar ratio of from about 4:1 to about 1:2, the copolymer having a weight average molecular weight of from about 2,000 to about 20,000, the esterified copolymer having been esterified with a plurality of aliphatic alcohols having from about four to about forty carbon atoms, imparts to the fuel oil surprisingly improved low temperature fluidity, provided that the alcohols include an eight carbon alcohol making up from about 50 to about 85 molar percent of the alcohols.

REFERENCES:
patent: 4153422 (1979-05-01), Wisotsky
patent: 4240916 (1980-12-01), Rossi
patent: 4481013 (1984-11-01), Tack et al.
patent: 4652611 (1987-03-01), Kuroda et al.
patent: 5441545 (1995-08-01), Lewtas et al.
patent: 5478368 (1995-12-01), Lewtas et al.
patent: 5503645 (1996-04-01), Jung et al.

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