US PATENT SUBCLASS 525 / 54.23
.~.~.~.~ Previously formed solid polymer is derived from ethylenically unsaturated reactants only


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

*  DD  SYNTHETIC RESINS (Class 520, Subclass 1) {4}
50  DF  .~ MIXING OF TWO OR MORE SOLID POLYMERS; MIXING OF SOLID POLYMER OR SICP WITH SICP OR SPFI; MIXING OF SICP WITH AN ETHYLENIC AGENT; MIXING OF SOLID POLYMER WITH A CHEMICAL TREATING OR ETHYLENIC AGENT; OR PROCESSES OF FORMING OR REACTING; OR THE RESULTANT PRODUCT OF ANY OF THE ABOVE OPERATIONS {32}
54.2  DF  .~.~ Previously formed solid polymer chemically reacted with carbohydrate or derivative {2}
54.21  DF  .~.~.~ Cellulose or derivative as chemical reactant {2}
54.23.~.~.~.~ Previously formed solid polymer is derived from ethylenically unsaturated reactants only


DEFINITION

Classification: 525/54.23

Previously formed solid polymer is derived from ethylenically unsaturated reactants only:

(under subclass 54.21) Subject matter wherein only ethylenically unsaturated compounds are precursors for the solid polymer.