US PATENT SUBCLASS 525 / 333.4
.~.~.~.~.~ Halogenated polymer

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}
326.1  DF  .~.~.~ Chemically after treated solid polymers derived from ethylenically unsaturated monomers only {24}
333.3  DF  .~.~.~.~ Polymer derived from aromatic hydrocarbon monomer, e.g., styrene, etc. {3}
333.4.~.~.~.~.~ Halogenated polymer

DEFINITION

Classification: 525/333.4

Halogenated polymer:

(under subclass 333.3) Product wherein the said solid polymer has been halogenated.

(1) Note. The halogen is introduced subsequent to formation of the solid polymer.

(2) Note. Halogen must be present in the final product.

SEE OR SEARCH THIS CLASS, SUBCLASS:

333.6, for quaternized polystyrene produced by reacting an amine with post halogenated polystyrene followed by reaction with quaternizing agent.