US PATENT SUBCLASS 524 / 753-- .~.~.~.~ Carboxylic acid ester linkage, e.g., oxyalkylated sorbitan ester, etc.

US PATENT SUBCLASS 524 / 753
.~.~.~.~ Carboxylic acid ester linkage, e.g., oxyalkylated sorbitan ester, etc.

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}
751	DF	.~.~.~ Heterocyclic chalcogen compound as DNRM {3}
753		.~.~.~.~ Carboxylic acid ester linkage, e.g., oxyalkylated sorbitan ester, etc.

DEFINITION

Classification: 524/753

Carboxylic acid ester linkage, e.g., oxyalkylated sorbitan ester, etc.:

(under subclass 751) Subject matter wherein said heterocyclic chalcogen compound has at least one carboxylic acid ester linkage.

(1) Note. Included herein are SPAN [supscrpt]R[end supscrpt] which is a mixture of esters of fatty acids with various hexitol anhydrides (e.g., sorbitan, etc.) derived from sorbitol, as illustrated below (TWEEN [supscrpt]R[end supscrpt] is oxyalkylated SPAN [supscrpt]R)[end supscrpt]: [figure]