Oxazoline containing dispersants stabilized against oxidation wi

Details Oxazoline containing dispersants stabilized against oxidation wi Oxazoline containing dispersants stabilized against oxidation wi

1979-10-11

1981-04-21

Metz, Andrew

Compositions

X-ray or neutron shield

44 63, 44 76, 252467, 252402, 260125, 260128, 548219, 548225, 548226, 548237, C01M 138

Patent

active

042631530

ABSTRACT:
A dispersant or dispersant mixture that is useful in fuel and lubricant compositions, and that is characterized by its derivation from a long chain dicarboxylic acid material and an amino alcohol, is stabilized against oxidation by sulfurization by reaction with sulfur or with a sulfur compound selected from the group consisting of carbon disulfide, sulfides of phosphorus including P.sub.2 S.sub.5 and P.sub.4 S.sub.3, and phosphosulfurized olefins. More particularly, the dispersant so treated will usually comprise a mono or bis-oxazoline prepared by reaction of a hydrocarbyl-substituted C.sub.4 -C.sub.10 dicarboxylic acid or anhydride or ester thereof, having at least 50 carbon atoms in the hydrocarbyl group, with a 2,2-disubstituted 2-amino-1-alkanol that has from two to three hydroxy groups and that contains from 4 to 8 total carbon atoms.

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