US PATENT SUBCLASS 524 / 37
.~.~.~.~.~ Carboxylic acid ester

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}
27  DF  .~.~.~ Carbohydrate or derivative DNRM {9}
35  DF  .~.~.~.~ Cellulose {3}
37.~.~.~.~.~ Carboxylic acid ester {2}
38  DF  .~.~.~.~.~.~> Mixed carboxylate ester {1}
41  DF  .~.~.~.~.~.~> Acetate

DEFINITION

Classification: 524/37

Carboxylic acid ester:

(under subclass 35) Subject matter wherein the cellulose contains at least one carboxylic acid ester group therein.

(1) Note. See the Class 520 Glossary wherein the term "carboxylic acid ester group" is defined under "carboxylic acid or derivative".