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US 2015/0105306 A1Published application
Mannich condensation products as sequestering agents for fuels and lubricating oils
AssigneeChevron Oronite Company LLC
InventorKenneth D. Nelson
Life of this patent
Estimating the term…
Abstract
Sequestering agents for use in fuels and lubricating oils derived from Mannich condensation reaction utilizing a polyisobutyl-substituted hydroxyaromatic compound, an aldehyde, an alkali metal base, and glycine or aspartic acid, or an ester thereof.
Claims23
A compound of Formula I:
- wherein PIB is a polyisobutyl group having a number average molecular weight of about 1600 to about 3000;
- X is, independently, hydrogen, an alkali metal ion, an ammonium ion, or alkyl having one to ten carbon atoms;
- R′ is, independently, hydrogen or alkyl having one to 10 carbon atoms, cycloalkyl having from 3 to 10 carbon atoms, aryl having 6 to 10 carbon atoms, alkaryl having 7 to 20 carbon atoms, or aralkyl having 7 to 20 carbon atoms;
- Y is hydrogen, alkyl having 1 to 10 carbon atoms, or CHR′OH, or
- Z is hydrogen, hydroxyl,
- n is an integer from 0 to 20;
- wherein if n is 0, then Z is
- and Y′ is H or —CHR′OH.
5 more elements
A compound prepared by the Mannich condensation of:
- (a) a polyisobutyl-substituted hydroxyaromatic compound having a number average molecular weight of about 1600 to about 3000;
- (b) an aldehyde;
- (c) aspartic acid, or an ester thereof;
- and
- (d) an alkali metal base.
2 more elements
Dependencies are inferred from the claim text.