US PATENT SUBCLASS 516 / 47
.~.~.~ The compound contains -C(=O)OH or salt thereof (e.g., soap, rosin, fatty acid)

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

9  DF  CONTINUOUS LIQUID OR SUPERCRITICAL PHASE: COLLOID SYSTEMS; COMPOSITIONS CONTAINING AN AGENT FOR MAKING OR STABILIZING COLLOID SYSTEMS; PROCESSES OF MAKING OR STABILIZING COLLOID SYSTEMS; PROCESSES OF PREPARING THE COMPOSITIONS (E.G., THICKENING AGENT; PROTECTIVE COLLOID AGENT; COMPOSITION CONTAINING AN EMULSIFYING AGENT WITH NO DISPERSANT* DISCLOSED; ORGANIC LIQUID EMULSIFIED IN ANHYDROUS HF) {5}
38  DF  .~ Aqueous continuous liquid phase and discontinuous phase primarily bituminous (e.g., asphalt, pitch, tar, montan wax, paraffin wax), or coal, or elemental Carbon {6}
46  DF  .~.~ The agent contains organic compound containing oxygen {3}
47.~.~.~ The compound contains -C(=O)OH or salt thereof (e.g., soap, rosin, fatty acid) {1}
48  DF  .~.~.~.~> Inorganic alkaline reactant is added in a separate step {1}

DEFINITION

Classification: 516/47

The compound contains -C(=O)OH group or salt thereof (e.g., soap, rosin, fatty acid):

(under subclass 46) Subject matter in which the organic* compound which contains oxygen contains carboxylic acid group or salt thereof, such as soap, rosin, or fatty acids.

(1) Note. "-C(=O)OH group or salt thereof" does NOT include carboxylic acid esters (-C(=O)OR where R is an organic* group).

SEE OR SEARCH THIS CLASS, SUBCLASS:

19, for a similar colloid system making or stabilizing agent* used in foam colloid system.

20, for a similar colloid system making or stabilizing agent* used in organic* liquid continuous phase with organic* liquid discontinuous phase (e.g., oil-in-oil emulsion).

28+, for a similar colloid system making or stabilizing agent* used in organic* liquid continuous phase with inorganic* liquid discontinuous phase (e.g., water-in-oil emulsion).

31+, for a similar colloid system making or stabilizing agent* used in organic* liquid continuous phase with discontinuous phase primarily solid or semisolid. 39, for a similar colloid system making or stabilizing agent* where the organic* compound which contains oxygen is derived from a native precursor in the bituminous material* and it is subjected to an in situ reaction with an inorganic* alkaline agent.

72+, for a similar colloid system making or stabilizing agent* used in aqueous continuous phase with discontinuous phase primarily organic* liquid (e.g., oil-in-water emulsion).

77+, for a similar colloid system making or stabilizing agent* used in aqueous continuous phase with discontinuous phase primarily (nonbituminous) solid.

SEE OR SEARCH CLASS

530, Chemistry: Natural Resins or Derivatives; Peptides or Proteins; Lignins or Reaction Products Thereof, appropriate subclasses for colloid systems such as gel-like proteins. Areas known to have documents related to colloid systems or wetting agents include

200+, for natural resin derivatives which are not pure compounds, and processes of treating natural resins or derivatives (e.g., wood, gum, and tall oil rosin; wood or pine tar or pitch; shellac; copals from various sources, both

recent and fossil, such as Congo, Manila, etc.; amber; dammar; kauri; coal resin; gum accroides; sandarac; cativo resin).