Compositions containing particles of highly fluorinated ion exchange polymer
View Patent ↗Solid and liquid compositions containing particles of highly fluorinated ion-exchange polymer having sulfonate functional groups with an ion exchange ratio of less than about 33. The compositions contain at least about 25% by weight of polymer particles having a particle size of about 2 nm to about 30 nm.
1. An aqueous liquid composition comprising an aqueous liquid medium containing about 0.5 to about 50% by weight particles of a highly fluorinated ion-exchange polymer having sulfonate functional groups with an ion exchange ratio of less than about 33, at least about 25% by weight of said particles having a particle size of about 2 nm to about 30 nm.
2. The composition of claim 1 wherein at least about 50% by weight of said particles have a particle size of about 2 nm to about 30 nm.
3. The composition of claim 1 wherein at least about 90% by weight of said particles have a particle size of about 2 nm to about 30 nm.
4. The composition of claim 1 wherein said composition is substantially free of alcohols.
5. The composition of claim 1 wherein said composition is substantially free of organic liquids.
6. The composition of claim 1 wherein said liquid medium consists essentially of water.
7. The composition of claim 1 wherein said composition is a stable colloid.
8. The composition of claim 1 comprising about 5 to about 40% by weight ion exchange polymer.
9. The composition of claim 1 comprising about 10 to about 40% by weight ion exchange polymer.
10. The composition of claim 1 comprising about 20 to about 40% by weight ion exchange polymer.