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US 5,296,154 AGranted
High molecular weight nitrogen-containing condensates and fuels and lubricants containing same
AssigneeThe Lubrizol Corporation
InventorThomas F. Steckel
Life of this patent
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Abstract
Improved additives/detergents for lubricant and fuel compositions are obtained by condensing a hydroxyalkyl or hydroxyaryl compound with an amine compound. The condensates according to the present invention are produced by the acid catalyzed condensation of the amine reactant with the hydroxy reactant.
Claims18
A polyamine comprising units of the formula:
- ##STR25## wherein R is independently hydrogen or C.sub.1-7 hydrocarbyl;
- R' is hydrogen, alkyl or NH.sub.2 R"(NR").sub.y, wherein y is a number in the range from 1 to about 6 and R" is an alkylene group of 1 to about 10 carbon atoms;
- Y represents N or O;
- X is an alkylene group;
- A is hydrocarbyl;
- Z is a heterocyclic ring containing at least one nitrogen atom;
- x is a number in the range from 1 to about 10;
- u is an integer greater than 1;
- and n is 0 or 1.
6 more elements
A process comprising reacting a mixture comprising
- (A) at least one compound represented by the formula:
- ##STR27## wherein each R is independently hydrogen or a hydrocarbyl, Y represents S, N, or O;
- A and X each independently represent an alkylene group;
- n is 0 or 1 dependent upon m and q, where q is 0 or 1, m is 2 or 3;
- with
- (B) at least one polyamine represented by the formula:
- ##STR28## wherein each R is hydrogen or a hydrocarbyl group,
- each R' is independently hydrogen, alkyl, or NH.sub.2 R"(NR").sub.y where each R" is independently an alkylene group of 1 to about 10 carbon atoms and y is a number in the range of from 1 to about 6,
- each Z is independently a heterocyclic ring containing at least on nitrogen atom and
- x is a number int eh range of from 1 to about 10 in the presence of
- (C) an acid catalyst at an elevated temperature.
8 more elements
Dependencies are inferred from the claim text.