US PATENT SUBCLASS 525 / 459
.~.~.~.~ Solid polymer derived from -N=C=X reactant and polyhydroxy reactant also derived from polyamine reactant

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}
452  DF  .~.~ Solid polymer derived from -N=C=X reactant (X is chalcogen) {1}
453  DF  .~.~.~ Solid polymer derived from -N=C=X reactant and polyhydroxy reactant {6}
459.~.~.~.~ Solid polymer derived from -N=C=X reactant and polyhydroxy reactant also derived from polyamine reactant

DEFINITION

Classification: 525/459

Solid polymer derived from -N=C=X reactant and polyhydroxy reactant also derived from polyamine reactant:

(under subclass 453) Subject matter wherein the solid polymer derived from a -N=C=X or blocked -N=C=X reactant and polyhydroxy reactant is also derived from a polyamine reactant (X is chalcogen).