US PATENT SUBCLASS 44 / 362-- .~.~.~ Heavy metal or aluminum complex of compounds having two -C(=X)- groups, wherein X is chalcogen, bonded to the same carbon, or enols thereof (e.g., iron acetylacetonate, etc.)

US PATENT SUBCLASS 44 / 362
.~.~.~ Heavy metal or aluminum complex of compounds having two -C(=X)- groups, wherein X is chalcogen, bonded to the same carbon, or enols thereof (e.g., iron acetylacetonate, etc.)

Current as of: June, 1999
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44 /	HD	FUEL AND RELATED COMPOSITIONS

300	DF	LIQUID FUELS (EXCLUDING FUELS THAT ARE EXCLUSIVELY MIXTURES OF LIQUID HYDROCARBONS) {31}
354	DF	.~ Aluminum or heavy metal, other than lead, containing {3}
358	DF	.~.~ Organic compound containing the heavy metal or aluminum {8}
362		.~.~.~ Heavy metal or aluminum complex of compounds having two -C(=X)- groups, wherein X is chalcogen, bonded to the same carbon, or enols thereof (e.g., iron acetylacetonate, etc.)

DEFINITION

Classification: 44/362

Heavy metal or aluminum complex of compounds having two -C(=X)- groups, wherein X is chalcogen, bonded to the same carbon, or enols thereof (e.g., iron acetylacetonate, etc.):

(under subclass 358) Compositions which contain complexes of compounds having two -C(=X)- groups, wherein X is chalcogen (i.e., oxygen, sulfur, selenium, or tellurium), bonded to the same carbon, or the enols thereof with heavy metal of aluminum.

(1) Note. An example of the keto-enol tautomerism referred to above is either of these two tautomer types, below, which can form complexes with heavy metal or aluminum: [figure]