US PATENT SUBCLASS 525 / 287
.~.~.~.~ Ethylenic reactant contains a phosphorus atom

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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}
242  DF  .~.~.~ Polymer derived from ethylenic reactants only mixed with ethylenic reactant {21}
287.~.~.~.~ Ethylenic reactant contains a phosphorus atom

DEFINITION

Classification: 525/287

Ethylenic reactant contains a phosphorus atom:

(under subclass 242) Subject matter wherein the ethylenic reactant contains a phosphorus atom, e.g., bis (beta-chloroethyl) vinyl phosphonate (CH2[end subscrpt]=CH- P(O) (O CH 2[end subscrpt]CH2CL)2[end subscrpt]), etc.