US PATENT SUBCLASS 8 / 115.61
.~.~.~.~ Reactant contains oxygen heterocycle

Current as of: June, 1999
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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}
115.61.~.~.~.~ Reactant contains oxygen heterocycle

DEFINITION

Classification: 8/115.61

Reactant contains oxygen heterocycle:

(under subclass 115.57) Subject matter wherein the chemical reactant contains an oxygen heterocyclic ring, e.g., epichlorohydrin, etc.

(1) Note. Reactant such as polyethylene oxide, polypropylene oxide, etc., are devoid of the oxygen ring and therefore not classified here. However, the polymer from the diglycidyl ether of bisphenol A contains residual epoxy groups and would be classified here.