CPC C08J 3/124 (2013.01) [A01N 25/00 (2013.01); A23L 29/20 (2016.08); A61K 8/0241 (2013.01); A61K 8/88 (2013.01); A61K 47/42 (2013.01); A61Q 19/00 (2013.01); C04B 16/04 (2013.01); C04B 24/12 (2013.01); C04B 24/2652 (2013.01); C08J 3/24 (2013.01); C09D 7/43 (2018.01); C09D 11/04 (2013.01); C09K 8/035 (2013.01); C09K 8/685 (2013.01); C09K 8/70 (2013.01); C11D 3/3719 (2013.01); A23V 2002/00 (2013.01); A61K 2800/10 (2013.01); A61K 2800/41 (2013.01); A61K 2800/48 (2013.01); A61K 2800/546 (2013.01); C04B 2103/0079 (2013.01); C08J 2377/04 (2013.01)] | 5 Claims |
1. A method of preparing a rheology modifier comprising:
cross-linking a poly(amino acid) with a cross-linker to produce a cross-linked poly(amino acid) and simultaneously drying the cross-linked poly(amino acid) by heating a solution of the poly(amino acid) and a cross-linker in water at a temperature at which the water evaporates and the cross-linker crosslinks the poly(amino acid) to form a dried resin including the cross-linked poly(amino acid);
dispersing the dried resin in water to rehydrate the dried resin with the cross-linked poly(amino acid); and
grinding the rehydrated cross-linked poly(amino acid) to have a mean equivalent diameter when fully swollen in deionized water of up to about 1000 μm, as measured by laser diffraction.
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