Novel gasohol or ethanol fuel composition containing as a corrosion inhibitor the reaction product of benzothiazole, formaldehyde and an N-alkyl propylene diamine
AssigneeTexaco Inc.
InventorRodney L. Sung
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Abstract
A novel fuel composition contains ethanol or gasohol plus, as a corrosion inhibitor, a reaction product of benzotriazole, formaldehyde, and an N-alkyl propylene diamine.
Claims38
A fuel composition for internal combustion engines comprising
- (a) a major portion of a fuel containing (i) at least one alcohol selected from the group consisting of ethanol and methanol and (ii) gasoline in amount of 0-50 volumes per volume of alcohol;
- and
- (b) a minor corrosion inhibiting amount of, as a corrosion inhibiting agent, a reaction product of (i) a benzotriazole, (ii) an aldehyde or a ketone, and (iii) a C.sub.3 -C.sub.12 poly-primary amine bearing at least one free --NH.sub.2 group and at least one --NHR' group wherein R' is a C.sub.12 -C.sub.18 hydrocarbon group.
A fuel composition for internal combustion engines comprising
- (a) a major portion of a fuel containing absolute ethanol;
- and
- (b) a minor corrosion inhibiting amount, 0.001 w %-0.001 w % of said fuel composition, of as a corrosion inhibiting agent, a reaction product of benzotriazole per se, formaldehyde, and R' NHCH.sub.2 CH.sub.2 CH.sub.2 NH.sub.2 wherein R' is C.sub.12 -C.sub.18 alkyl hydrocarbon.
A composition comprising a reaction product of (i) a benzotriazole, (ii) an aldehyde or a ketone, and (iii) a C.sub.3 -C.sub.12 poly-primary amine bearing at least one free --NH.sub.2 group and at least one --NHR' group wherein R' is a C.sub.12 -C.sub.18 hydrocarbon group.
##STR2## wherein R' is a C.sub.12 -C.sub.18 straight chain alkyl hydrocarbon group.
Dependencies are inferred from the claim text.