US PATENT SUBCLASS 508 / 221
.~ Compound of indeterminate structure, prepared by reacting a heterocyclic compound of known structure; a heterocyclic ring is one having as ring members only carbon and at least one hetero atom selected from nitrogen and chalcogen (oxygen, sulfur, selenium, or tellurium)

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508 /   HD   SOLID ANTI-FRICTION DEVICES, MATERIALS THEREFOR, LUBRICANT OR SEPARATE COMPOSITIONS FOR MOVING SOLID SURFACES, AND MISCELLANEOUS MINERAL OIL COMPOSITIONS

110  DF  LUBRICANTS OR SEPARANTS FOR MOVING SOLID SURFACES AND MISCELLANEOUS MINERAL OIL COMPOSITIONS (E.G., WATER CONTAINING, ETC.) {53}
221.~ Compound of indeterminate structure, prepared by reacting a heterocyclic compound of known structure; a heterocyclic ring is one having as ring members only carbon and at least one hetero atom selected from nitrogen and chalcogen (oxygen, sulfur, selenium, or tellurium) {9}
222  DF  .~.~> The heterocyclic compound reactant contains a lactone or cyclic carbonate ring
223  DF  .~.~> The heterocyclic compound reactant contains a three- or four-membered hetero ring (e.g., aziridine, epoxy compounds, oxetane, etc.) {2}
226  DF  .~.~> The heterocyclic compound reactant is sulfurized by means of an inorganic sulfurizing agent
227  DF  .~.~> An additional reactant contains phosphorus {1}
229  DF  .~.~> An additional reactant is an aldehyde or ketone
230  DF  .~.~> An additional reactant is an inorganic compound containing heavy metal or aluminum (e.g., ammonium molybdate, etc.)
231  DF  .~.~> The heterocyclic compound reactant contains a five-membered hetero ring with at least three ring hetero atoms (e.g., thiadiazole, benzotriazole, etc.)
232  DF  .~.~> The heterocyclic compound reactant contains a carboxylic acid anhydride ring {7}
242  DF  .~.~> An additional reactant is a phenol, a thiophenol, a carboxylic acid, or salt thereof

DEFINITION

Classification: 508/221

Compound of indeterminate structure, prepared by reacting a heterocyclic compound of known structure; a heterocyclic ring is one having as ring members only carbon and at least one hetero atom selected from nitrogen and chalcogen (oxygen, sulfur, selenium, or tellurium):

(under subclass 110) Compositions which contain a compound of indeterminate structure, prepared by the reaction of a compound of known structure having a heterocyclic ring whose members are carbon and at least one hetero atom selected from nitrogen and chalcogen (i.e., oxygen, sulfur, selenium, or tellurium).