ANTIVIRAL COMPOSITION FOR THE SURFACE TREATMENT OF AN ARTICLE

1 . An antiviral composition which is suitable for forming a coating on the surface of an article, comprising:

at least one polyamide-polyamine-epichlorohydrin resin, known as PAAE resin, and

one or more biocidal agents including at least one compound based on silver and/or one compound based on quaternary ammonium.

2 . The composition as claimed in claim 1 , in which said PAAE resin is formed from adipic acid, diethylenetriamine and epichlorohydrin.

3 . The composition as claimed in claim 1 , in which said PAAE resin(s) represent from 0.24% to 8.82% by dry weight relative to the total dry weight of said composition.

4 . The composition as claimed in claim 1 , comprising at least one biocidal agent chosen from silver salts, silver in a supported particulate form; polymeric or nonpolymeric quaternary ammonium salts; and mixtures thereof.

5 . The composition as claimed in claim 1 , in which said compound(s) based on silver and/or said compound(s) based on quaternary ammonium represent from 0.07% to 18% by dry weight, relative to the total dry weight of said composition.

6 . The composition as claimed in claim 1 , said composition comprising at least 3-iodo-2-propynylbutyl carbamate (IPBC) and/or diiodomethyl-p-tolyl sulfone (DIMTS).

7 . The composition as claimed in claim 1 , comprising at least one compound based on silver and at least IPBC.

8 . The composition as claimed in claim 1 , said composition comprising at least one binder.

9 . The composition as claimed in claim 1 , said composition comprising at least one aqueous or organic solvent medium.

10 . The composition as claimed in claim 1 , said composition comprising at least one humectant.

11 . A process for the surface treatment of an article intended to give it antiviral properties, comprising the application to the surface of said article of one or more compositions, comprising:

at least one polyamide-polyamine-epichlorohydrin resin, known as PAAE resin; and

one or more biocidal agents including at least one compound based on silver and/or one compound based on quaternary ammonium,

and forming a coating present at least on the surface of said treated article comprising at least said PAAE resin and said biocidal agent(s).

12 . The process as claimed in claim 11 , the composition or at least one of the compositions also comprising at least one binder.

13 . The process as claimed in claim 11 , comprising the application to the surface of said article of a single antiviral composition which is suitable for forming a coating on the surface of an article, comprising:

at least one polyamide-polyamine-epichlorohydrin resin, known as PAAE resin, and

one or more biocidal agents including at least one compound based on silver and/or one compound based on quaternary ammonium.

14 . The process as claimed in claim 11 , comprising the successive application of at least two different compositions comprising, taken in combination, at least said PAAE resin and said biocidal agent(s).

15 . The process as claimed in claim 11 , in which said composition(s) are applied by spraying, sizing, impregnating, printing; overprinting on an at least partially printed surface; surfacing, coating or depositing on the surface to be treated.

16 . An article surface-treated via a process as defined in claim 11 .

17 . The article as claimed in claim 16 , said article being a substrate intended for the manufacture of an information support.

18 . An information support including a substrate as defined in claim 17 .

19 . A method of improving the antiviral properties of a composition intended for the surface treatment of an article, comprising one or more biocides including at least one compound based on silver and/or at least one compound based on quaternary ammonium, using at least one polyamide-polyamine-epichlorohydrin resin as an additive.