US PATENT SUBCLASS 524 / 799
.~.~ Solid polymer or SICP derived from lignin or tannin and ethylenic monomer or SPFI

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}
799.~.~ Solid polymer or SICP derived from lignin or tannin and ethylenic monomer or SPFI

DEFINITION

Classification: 524/799

Solid polymer or SICP derived from lignin or tannin and ethylenic monomer or SPFI:

(under subclass 1) Subject matter under Class 523, ... wherein the desired or intentional composition is produced by formation of a solid polymer or SICP in the presence of at least one nonreactant material (NRM) by reaction of lignin, tannin, or derivatives with ethylenic monomer or specified polymer- forming ingredients (SPFI).

(1) Note. See the class definition of Class 523 for the definition of nonreactant material NRM.

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

(3) 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.

(4) Note. Placed herein are aqueous systems of reaction products of ligning, tannins, or lignosulfonates with SPFI. For this purpose, terms such as "tanning extract" or "reaction product" are assumed to result in aqueous systems unless the claim recites removal of water.