US 2021/0400979 A1 · ANTI-VIRAL FACE MASK AND FILTER MATERIALS

Abstract

The invention provides a filter fabric for providing anti pathogenic properties which has been coated with a composition comprising (a) 0.0001-99.9999% by weight of a compound of such as zinc pyrithione and (b) 0.0001-99.9999% by weight of an additional zinc salt selected from the group consisting of zinc acetate, zinc propionate, zinc oxalate, zinc benzoate, zinc gluconate, zinc ascorbate, zinc citrate, zinc lactate, zinc glycolate, zinc maleate, zinc fumarate, zinc polyacrylate and zinc polymaleate. The invention also provides a composition for imparting anti-viral properties to a breathable substrate material comprising two or more zinc salts selected from the group consisting of zinc acetate, zinc propionate, zinc oxalate, zinc benzoate, zinc gluconate, zinc ascorbate, zinc citrate, zinc lactate, zinc glycolate, zinc maleate, zinc fumarate, zinc EDTA, zinc glycinate, zinc polyacrylate, zinc polylactate, zinc polyglycolate and zinc polymaleate said zinc salts being present in effective amounts to impart anti-pathogenic properties.

Claims20

Dependent claims

A composition for imparting anti-pathogenic properties to a breathable substrate material comprising:

(a) 0.0001-99.9999% by weight of a compound of the formula I
where X is a substituent at any carbon in the pyridine ring selected from the group consisting of H, C1-C5 alkyl, C1-C5 alkoxy, F, Cl, Br and I;
and
(b) 0.0001-99.9999% by weight of an additional zinc salt selected from the group consisting of zinc acetate, zinc propionate, zinc oxalate, zinc benzoate, zinc gluconate, zinc ascorbate, zinc citrate, zinc lactate, zinc glycolate, zinc maleate, zinc fumarate, zinc picolinate, zinc propionate, zinc salicylate, zinc tartrate, zinc undecylenate, zinc salts of omega fatty acids, zinc glycinate, zinc polyacrylate, zinc polylactate, zinc polyglycolate and zinc polymaleate.

1 more element

A method of imparting anti-pathogenic properties to a face mask substrate material comprising:

(a) preparing a first coating composition containing a primer solution comprising a nonionic surfactant selected from the group consisting of Cetearyl Alcohol Ethoxylate 5-25 EO, Cetyl Alcohol Ethoxylate 2-20 EO, Cetyl Oleyl Alcohol Ethoxylate 2-30 EO, Lauryl Alcohol Ethoxylate 1-23 EO, Stearyl Alcohol Ethoxylate 2-20 EO, Isodecyl Alcohol Ethoxylate 3-8 EO, Isotridecyl Alcohol Ethoxylate 3-15 EO, C9-11 Alcohol Ethoxylate 2.5-8 EO, Tallow Fatty Amine Ethoxylate 2-20 EO, Coconut Fatty Amine Ethoxylate 2-5 EO, Ditallow Amine Ethoxylate 15 EO, Castor Oil Ethoxylate 5-54 EO, Hydrogenated Castor Oil Ethoxylate 25-40 EO, Lauryl Alcohol Ethoxylated and Propoxylated, Ethoxylated Sorbitan Monolaurate 20-80 EO, Polyethylene Glycol 200-8000 MW, Glycerine Ethoxylate 26 EO, Nonylphenol Ethoxylate 4-100 EO and copolymers of ethylene oxide and propylene oxide, optionally 10 wt % by weight of a polyvinyl alcohol having a weight average molecular weight from about 50,000 Mw to about 250,000 Mw;
and a solvent, and having a percent solids ranging from about 10 percent to about 50 percent;
(b) applying said first coating to a surface of a substrate;
(c) preparing a second coating composition comprising:
(i) 0.0001-99.9999% by weight of a compound of the formula I
where X is a substituent at any carbon in the pyridine ring selected from the group consisting of H, C1-C5 alkyl, C1-C5 alkoxy, F, Cl, Br and I;
and
(ii) 0.0001-99.9999% by weight of an additional zinc salt selected from the group consisting of zinc acetate, zinc propionate, zinc oxalate, zinc benzoate, zinc gluconate, zinc ascorbate, zinc citrate, zinc lactate, zinc glycolate, zinc maleate, zinc fumarate, zinc picolinate, zinc propionate, zinc salicylate, zinc tartrate, zinc undecylenate, zinc salts of omega fatty acids, zinc glycinate, zinc polyacrylate, zinc polylactate, zinc polyglycolate and zinc polymaleate;
and wherein said coating composition comprising (a) and (b) has a solids content ranging from about 0.0001% percent to about 50% by weight;
(d) applying said second coating composition as a top coat over said first coating composition on said substrate;
and
(e) drying the coated substrate material.

9 more elements

Dependencies are inferred from the claim text.

Anti-viral face mask and filter materials

Life of this patent

Anti-viral face mask and filter materials

Life of this patent

Abstract

Claims20