US PATENT SUBCLASS 525 / 327.2
.~.~.~.~ Polymer derived from monomer containing chalcogen as part of heterocyclic ring other than solely as cyclic anhydride of ethylenically unsaturated dicarboxylic acid

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}
327.2.~.~.~.~ Polymer derived from monomer containing chalcogen as part of heterocyclic ring other than solely as cyclic anhydride of ethylenically unsaturated dicarboxylic acid {1}
327.3  DF  .~.~.~.~.~> Three membered chalcogen ring monomer, e.g., oxirane, etc.

DEFINITION

Classification: 525/327.2

Polymer derived from monomer containing chalcogen as part of heterocyclic ring other than soley as cyclic anhydride of ethlenically unsaturated dicarboxylic acid:

(under subclass 326.1) Product wherein a solid polymer which has been chemically modified is derived from a monomer which contains chalcogen as part of a heterocyclic ring and other than solely as a cyclic anhydride of an ethylenically unsaturated dicarboxylic acid.

SEE OR SEARCH THIS CLASS, SUBCLASS:

327.4, for chemically modified solid polymers derived from cyclic anhydrides of ethylenic dicarboxylic acids.