US PATENT SUBCLASS 516 / 158
.~.~.~.~.~.~ The compound contains esther (e.g., cellulose sulfate)

Current as of: June, 1999
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516 /   HD   COLLOID SYSTEMS AND WETTING AGENTS; SUBCOMBINATIONS THEREOF; PROCESSES OF

113  DF  COMPOSITIONS CONTAINING AN AGENT FOR BREAKING (RESOLVING) OR INHIBITING COLLOID SYSTEMS; PROCESSES OF BREAKING (RESOLVING) OR INHIBITING COLLOID SYSTEMS (E.G., GEL BREAKING OR INHIBITING, COAGULATING, FLOCCULATING); PROCESSES OF PREPARING THE COMPOSITIONS {3}
135  DF  .~ Continuous liquid phase colloid system and discontinuous liquid phase (e.g., breaking an emulsion) {4}
139  DF  .~.~ The agent contains material which is different from the primary components of both liquid phases of the emulsion colloid system (i.e., more than only diluting) {2}
141  DF  .~.~.~ Aqueous-petroleum, petroleum-aqueous, aqueous-hydrocarbon, or hydrocarbon-aqueous emulsion systems {2}
143  DF  .~.~.~.~ The agent contains organic compound {5}
146  DF  .~.~.~.~.~ The compound contains sulfoxy* (e.g., sulfonate terpene) {7}
158.~.~.~.~.~.~ The compound contains esther (e.g., cellulose sulfate)

DEFINITION

Classification: 516/158

The compound contains ether (e.g., cellulose sulfate):

(under subclass 146) Subject matter in which the sulfoxy* containing organic* compound also contains an ether group, such as, cellulose sulfate.

SEE OR SEARCH THIS CLASS, SUBCLASS:

126+, for similar subject matter related to breaking (resolving) or inhibiting of foams.