US PATENT SUBCLASS 424 / 78.22
.~.~.~.~ Nitrogen heterocycle

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.~.~.~.~ Nitrogen heterocycle {2}
78.23  DF  .~.~.~.~.~> Six-membered ring
78.24  DF  .~.~.~.~.~> N-Vinyl-2-pyrrolidone {1}

DEFINITION

Classification: 424/78.22

Nitrogen heterocycle:

(under subclass 78.19) Subject matter wherein the monomer is a nitrogen heterocycle; e.g., 5-ethyl-3-vinyloxazolidin-2-one.

SEE OR SEARCH CLASS

525, Synthetic Resins or Natural Rubbers,

54.1+, for the chemical aftertreatment of a solid synthetic organic polymer with a protein or biologically active polypeptide, subclasses 54.2+ aftertreatment with a carbohydrate or derivative, subclasses 326.7+ for a product derived from a monomer containing a nitrogen heterocycle, and subclass 356 for the aftertreatment of a solid synthetic organic polymer derived from ethylenic monomers only with elemental halogen; e.g., the formation of the polyvinylpyrrolidone-iodine complex (well known antimicrobial agent), etc.

526, Synthetic Resins or Natural Rubbers,

258+, for the preparation of a polymer from ethylenic monomers only wherein the monomer contains a nitrogen heterocycle.