Gasoline additive compositions comprising a combination of monomaine and polyamine Mannich bases
Patent
·
OSTI ID:5245258
A combination of monoamine and polyamine Mannich condensation products is described for use in gasoline as carburetor detergents and useful also to control intake valve deposits and quick-heat intake manifold deposits. The monoamide is Z/sub n/NR/sub 3-n/, and the polyamine is ZNH(C/sub x/H/sub 2x/N(R'))/sub y/C/sub x/H/sub 2x/NHZ wherein Z is an alkyl- and hydroxy-substituted benzyl group, the alkyl having 50 to 1000 carbon atoms; R is hydrogen or alkyl of 1 to 18 carbon attoms; n is 1 or 2; R' is hydrogen or Z with the proviso that at least one R' is hydrogen; x is 2 or 3; and y is 1 to 5.
- Assignee:
- E.I. Du Pont de Nemours and Co.
- Patent Number(s):
- US 26 Jul 1977
- OSTI ID:
- 5245258
- Country of Publication:
- United States
- Language:
- English
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