US PATENT SUBCLASS 525 / 73
.~.~.~.~ Mixture contains solid polymer derived from reactant containing nitrogen heterocycle

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}
55  DF  .~.~ At least one solid polymer derived from ethylenic reactants only {25}
70  DF  .~.~.~ Mixing of solid graft or graft-type copolymer derived from ethylenic reactants only with other solid polymer derived from ethylenic reactants only; or treating said mixture with chemical treating agent; or processes of forming or reacting; or the resultant product of any of the above operations {11}
73.~.~.~.~ Mixture contains solid polymer derived from reactant containing nitrogen heterocycle

DEFINITION

Classification: 525/73

Mixture contains solid polymer derived from reactant containing nitrogen heterocycle:

(under subclass 70) Subject matter wherein a solid polymer is derived from or has been reacted with an ethylenic reactant containing a nitrogen heterocycle (e.g., 2-methyl-5-vinylpyridine, n-vinyl pyrrolidone, etc.).