	US 11,679,984 B2
	Composite sols
Jan-Erik Otterstedt, Simrishamn (SE)
Assigned to PREBONA AB, Simrishamn (SE)
Appl. No. 16/306,979
Filed by Prebona AB, Simrishamn (SE)
PCT Filed Jun. 15, 2017, PCT No. PCT/EP2017/064658 § 371(c)(1), (2) Date Dec. 4, 2018, PCT Pub. No. WO2017/216285, PCT Pub. Date Dec. 21, 2017.
Claims priority of application No. 16174645 (EP), filed on Jun. 15, 2016.
Prior Publication US 2020/0239322 A1, Jul. 30, 2020
Int. Cl. C01B 33/149 (2006.01); A01N 25/04 (2006.01); A01N 59/20 (2006.01)

CPC C01B 33/149 (2013.01) [A01N 25/04 (2013.01); A01N 59/20 (2013.01); C01P 2004/61 (2013.01)]

16 Claims

1. A stable composite sol comprising an aqueous colloidal dispersion of particles of silica having a particle size of from 3 nm to 100 nm, said particles having multivalent ions of one or more metals adsorbed at the particle surface, selected from metals having atomic numbers 24-31, 42-46, 48-50, 64 and 74-82, wherein said multivalent ions are present at a total concentration of from 0.05 mM to 50 mM, and wherein the dispersion has a pH of from 8 to 11.