US PATENT SUBCLASS 424 / 78.24
.~.~.~.~.~ N-Vinyl-2-pyrrolidone


Current as of: June, 1999
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424 /   HD   DRUG, BIO-AFFECTING AND BODY TREATING COMPOSITIONS

78.08  DF  SOLID SYNTHETIC ORGANIC POLYMER AS DESIGNATED ORGANIC ACTIVE INGREDIENT (DOAI) {6}
78.17  DF  .~ Aftertreated polymer (e.g., grafting, blocking, etc.) {2}
78.18  DF  .~.~ Polymer derived from ethylenic monomers only {2}
78.19  DF  .~.~.~ Heterocyclic monomer {2}
78.22  DF  .~.~.~.~ Nitrogen heterocycle {2}
78.24.~.~.~.~.~ N-Vinyl-2-pyrrolidone {1}
78.25  DF  .~.~.~.~.~.~> Complexed with molecular halogen or compound containing only halogen atoms


DEFINITION

Classification: 424/78.24

N-vinyl-2-pyrrolidone:

(under subclass 78.22) Subject matter wherein the nitrogen heterocycle is N-vinyl-2-pyrrolidone.