US PATENT SUBCLASS 8 / 115.59
.~.~.~.~.~ Contains six-membered nitrogen heterocycle

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8 /   HD   BLEACHING AND DYEING; FLUID TREATMENT AND CHEMICAL MODIFICATION OF TEXTILES AND FIBERS

115.51  DF  CHEMICAL MODIFICATION OF TEXTILES OR FIBERS OR PRODUCTS THEREOF {7}
115.54  DF  .~ Treating textiles or fibers from synthetic resin or natural rubber with chemical reactant {4}
115.56  DF  .~.~ Organic chemical reactant {4}
115.57  DF  .~.~.~ Reactant contains heterocycle {2}
115.58  DF  .~.~.~.~ Reactant contains nitrogen heterocycle {1}
115.59.~.~.~.~.~ Contains six-membered nitrogen heterocycle

DEFINITION

Classification: 8/115.59

Contains six-membered nitrogen heterocycle:

(under subclass 115.58) Subject matter wherein the chemical reactant contains a six-membered nitrogen heterocyclic ring, e.g., pyridine, piperidine, etc.