US PATENT SUBCLASS 524 / 315
.~.~.~.~.~.~.~ 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}
80  DF  .~.~.~ DNRM which is other than silicon dioxide, glass, titanium dioxide, water, halohydrocarbon, hydrocarbon, or elemental carbon {4}
81  DF  .~.~.~.~ Organic DNRM {21}
284  DF  .~.~.~.~.~ Carboxylic acid or derivative and wherein the derivative is other than a metal salt DNRM {3}
300  DF  .~.~.~.~.~.~ Two or more carbon atoms {8}
315.~.~.~.~.~.~.~ Carboxylic acid ester {3}
316  DF  .~.~.~.~.~.~.~>.~ Atom other than C, H, or O
317  DF  .~.~.~.~.~.~.~>.~ Oxygen atom other than as part of a carboxylic acid group, e.g., glycolic ester, etc.
318  DF  .~.~.~.~.~.~.~>.~ Acyl group of the carboxylic acid has at least fifteen carbon atoms, e.g., butyl stearate, etc.


DEFINITION

Classification: 524/315

Carboxylic acid ester:

(under subclass 300) Subject matter wherein the carboxylic acid derivative is a carboxylic acid ester.

(1) Note. See the Class 520 Glossary for the definition of "carboxylic acid or derivative" which includes a carboxylic acid ester.