US PATENT SUBCLASS 524 / 735
.~.~.~ Lignin, tannin, or derivative as DNRM


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}
700  DF  .~.~ Preparation of intentional or desired composition by formation of a solid polymer (SP) or SICP in presence of a designated nonreactant material (DNRM) other than solely water, hydrocarbon, silicon dioxide, glass, titanium dioxide or elemental carbon, composition thereof; or process of treating or composition thereof {23}
735.~.~.~ Lignin, tannin, or derivative as DNRM


DEFINITION

Classification: 524/735

Lignin, tannin, or derivative as DNRM:

(under subclass 700) Subject matter wherein lignin, tannin, or a derivative of these is present as DNRM during formation of a solid polymer or SICP.

(1) Note. See the Class 520 Glossary for a definition of the terms "lignin" and "lignin derivative".

(2) Note. Tannins appear to be esters of gallic acid whose carboxyl group is esterified by the hydroxyl group of a second molecule of gallic acid or the glucosides thereof.