US PATENT SUBCLASS 525 / 421
.~.~.~.~.~ Solid polymer derived from reactant containing ethylenic unsaturation

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}
418  DF  .~.~ Solid polymer derived from at least one carboxylic acid or derivative {3}
419  DF  .~.~.~ Solid polymer derived from at least one lactam; from an amino carboxylic acid or derivative; or from a polycarboxylic acid or derivative {3}
420  DF  .~.~.~.~ Solid polymer derived from an amino carboxylic acid or derivative; from a polyamine and a polycarboxylic acid or derivative; from at least one lactam; or from a polyamine salt of a polycarboxylic acid {14}
421.~.~.~.~.~ Solid polymer derived from reactant containing ethylenic unsaturation {1}
422  DF  .~.~.~.~.~.~> Solid polymer derived from imide reactant

DEFINITION

Classification: 525/421

Solid polymer derived from reactant containing ethylenic unsaturation:

(under subclass 420) Subject matter wherein the solid polymer is derived from a reactant containing ethylenic unsaturation.

(1) Note. The ethylenically unsaturated reactant may be the carboxylic acid or may be an additional reactant, e.g., maleic anhydride, 1,4-diaminobutene-2, etc.