US PATENT SUBCLASS 524 / 73
.~.~.~.~ Reaction product of lignin or tannin or derivative with an oxygen or nitrogen-containing organic 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}
1  DF  .~.~ Adding a NRM to a preformed solid polymer or preformed specified intermediate condensation product, composition thereof; or process of treating or composition thereof {31}
72  DF  .~.~.~ Lignin or tannin or derivative DNRM {4}
73.~.~.~.~ Reaction product of lignin or tannin or derivative with an oxygen or nitrogen-containing organic reactant

DEFINITION

Classification: 524/73

Reaction product of lignin or tannin or derivative with an oxygen or nitrogen containing organic reactant:

(under subclass 72) Subject matter wherein the DNRM is a reaction product of a lignin or tannin or derivative and an organic reactant containing an oxygen or nitrogen atom, e.g., formaldehyde reacted lignin, etc.