US PATENT SUBCLASS 524 / 356
.~.~.~.~.~ Ketone or ketene DNRM, i.e., C(C=O)C or C=C=O


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}
356.~.~.~.~.~ Ketone or ketene DNRM, i.e., C(C=O)C or C=C=O {3}
357  DF  .~.~.~.~.~.~> Two or more C(C=O)C groups {1}
359  DF  .~.~.~.~.~.~> Carbocyclic ring, e.g., benzophenone, etc. {1}
361  DF  .~.~.~.~.~.~> Only C, H, and oxygen atoms {4}


DEFINITION

Classification: 524/356

Ketone or ketene DNRM, i.e., C(C=O) or C=C=O:

(under subclass 81) Subject matter wherein the designated nonreactive material contains at least one ketone or ketene group.

(1) Note. See the Class 520 Glossary for a definition of the term "ketone". Ketone is CH2[end subscrpt]=C=O.