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US 10,072,378 B2Granted
Water repellent, soil resistant, fluorine-free compositions
AssigneeInvista North America S.A.R.L.
InventorMarkus Baumann
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Abstract
The present invention pertains to a fluorine-free composition for treating textile articles being water repellant, sol resistant and stain resistant, especially carpets comprising a first composition comprising an aqueous silicone emulsion, an aqueous dispersion of a silane quaternary ammonium salt and water and a second composition comprising a soil repellency component that is an aqueous dispersion of colloidal organosiloxane copolymers.
Claims12
A fluorine-free composition comprising:
- a. a first composition comprising
- i. an aqueous silicone emulsion having a non-volatile silicone content of from 10 to 30 wt. %, based on the total weight of said aqueous emulsion, and having a particle size, d50, from 25 to 100 nm,
- ii. an aqueous dispersion of a silane quaternary ammonium salt having a solid content of from 1.0 to 7.0 wt %, based on the total weight of said dispersion,
- wherein the combination of (i) and (ii) has an average zeta potential of 0.07 according to the Zeta Potential Test, and
- iii. water,
- whereby the mixing ratio is from 0.5 to 4.0 volume parts for (i), from 0.7 to 1.5 volume parts for (ii), and from 1.0 to 4.0 volume parts for (iii), and
- b. a second composition comprising a soil repellency component that is an aqueous dispersion of colloidal organosiloxanes, organosiloxane polymers or organosiloxane copolymers, and which has an overall cationic or anionic charge, and that are of average particle size between 25 and 400 nm.
4 more elements
Dependencies are inferred from the claim text.