US PATENT SUBCLASS 516 / 48
.~.~.~.~ Inorganic alkaline reactant is added in a separate step

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  DF  .~.~.~ The compound contains -C(=O)OH or salt thereof (e.g., soap, rosin, fatty acid) {1}
48.~.~.~.~ Inorganic alkaline reactant is added in a separate step {1}
49  DF  .~.~.~.~.~> With added solid non-bituminous particulate

DEFINITION

Classification: 516/48

Inorganic alkaline reactant is added in a separate step:

(under subclass 47) Subject matter in which an inorganic* alkaline reactant is added in a separate step.

(1) Note. An example of the type of process (or composition) found in this subclass is the sequential addition of rosin and then NaOH or TSP.

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).