US PATENT SUBCLASS 524 / 238
.~.~.~.~.~.~.~ (C=X)X group wherein X is chalcogen


Current as of: June, 1999
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524 /   HD   SYNTHETIC RESINS OR NATURAL RUBBERS -- PART OF THE CLASS 520 SERIES

*  DD  SYNTHETIC RESINS (Class 520, Subclass 1) {1}
*  DD  .~ PROCESSES OF PREPARING A DESIRED OR INTENTIONAL COMPOSITION OF AT LEAST ONE NONREACTANT MATERIAL AND AT LEAST ONE SOLID POLYMER OR SPECIFIED INTERMEDIATE CONDENSATION PRODUCT, OR PRODUCT THEREOF (Class 523, subclass 1) {17}
1  DF  .~.~ Adding a NRM to a preformed solid polymer or preformed specified intermediate condensation product, composition thereof; or process of treating or composition thereof {31}
80  DF  .~.~.~ DNRM which is other than silicon dioxide, glass, titanium dioxide, water, halohydrocarbon, hydrocarbon, or elemental carbon {4}
81  DF  .~.~.~.~ Organic DNRM {21}
186  DF  .~.~.~.~.~ Organo nitrogen compound other than unsubstituted ammonium salt as sole nitrogen atom DNRM {12}
236  DF  .~.~.~.~.~.~ Trivalent or tetravalent nitrogen atom other than unsubstituted ammonium {6}
238.~.~.~.~.~.~.~ (C=X)X group wherein X is chalcogen {2}
239  DF  .~.~.~.~.~.~.~>.~ Two or more (C=X)X groups
240  DF  .~.~.~.~.~.~.~>.~ Aryl group


DEFINITION

Classification: 524/238

(C=X)X group wherein X is chalcogen:

(under subclass 236) Subject matter wherein the nitrogen compound contains at least one-X group wherein X is a chalcogen atom.

(1) Note. Chalcogen is limited to oxygen, sulphur, selenium, and tellurium.

(2) Note. Included herein is (R3[end subscrpt]NH)[supscrpt]+[end supscrpt] (acetate)[supscrpt]-[end supscrpt].