Patent ID: 11926712
Assignee: INDEPENDENCE OILFIELD CHEMICALS LLC
Field: Basic materials chemistry (Chemistry)
Classification: CPC C | IPC C

Claim 24:
25. A formulation according to claim 1, wherein:
said polymer (AA) includes 1-50 mol % of anionic co-monomeric moieties, selected from acrylate and AMPS-based repeat units;
said quaternary ammonium compound is selected from choline chloride, tetramethyl ammonium chloride, tetraethylammonium chloride and tetrapropyl ammonium chloride;
said aqueous formulation includes a salt (BB) in addition to components (i), (ii) and (iii), wherein said salt (BB) is not a quaternary ammonium compound;
said formulation includes at least 2 wt % of said salt (BB) and said formulation includes less than 30 wt % of said salt (BB);
the sum of the wt % of said quaternary ammonium compound and said salt (BB) is at least 20 wt % and said sum is less than 70 wt %; and
in said formulation, the ratio of the wt % of salt (BB) divided by the wt % of said quaternary ammonium compound is in the range 0.01 to 10.