US PATENT SUBCLASS 524 / 874
.~.~.~ With N-containing reactant

Current as of: June, 1999
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524 /   HD   SYNTHETIC RESINS OR NATURAL RUBBERS -- PART OF THE CLASS 520 SERIES

*  DD  SYNTHETIC RESINS (Class 520, Subclass 1) {1}
*  DD  .~ PROCESSES OF PREPARING A DESIRED OR INTENTIONAL COMPOSITION OF AT LEAST ONE NONREACTANT MATERIAL AND AT LEAST ONE SOLID POLYMER OR SPECIFIED INTERMEDIATE CONDENSATION PRODUCT, OR PRODUCT THEREOF (Class 523, subclass 1) {17}
871  DF  .~.~ N=C=X containing reactant forming a solid polymer or SICP in the presence of a nonreactant material (X is chalcogen) {4}
874.~.~.~ With N-containing reactant

DEFINITION

Classification: 524/874

With N-containing reactant:

(under subclass 871) Subject matter wherein there is at least one nitrogen-containing reactant present in addition to the -N=C=X reactant.