US PATENT SUBCLASS 525 / 399
.~.~.~ Mixed with -N=C=X-containing reactant or polymer derived therefrom (X is a chalcogen)

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}
398  DF  .~.~ Solid polymer derived from aldehyde, aldehyde derivative, or liquid polymer thereof as sole reactant and wherein none of the reactants contains a plurality of methylol groups or derivatives thereof {4}
399.~.~.~ Mixed with -N=C=X-containing reactant or polymer derived therefrom (X is a chalcogen)

DEFINITION

Classification: 525/399

Mixed with -N=C=X-containing reactant or polymer derived therefrom (X is chalcogen):

(under subclass 398) Subject matter wherein a solid polymer derived from an aldehyde or aldehyde derivative is mixed with -N=C=X or blocked -N=C=X reactant or polymer derived therefrom (X is chalcogen).

SEE OR SEARCH THIS CLASS, SUBCLASS:

395, for a discussion of the term "blocked".