Antimicrobial composition and tissue containing it

Patent metadata

Field	Value
Publication number	US-2016249608-A1
Application number	US-201415024422-A
Country	US
Kind code	A1
Filing date	Sep 23, 2014
Priority date	Sep 24, 2013
Publication date	Sep 1, 2016
Grant date	—

Abstract

The present invention relates to an antimicrobial and antifog composition comprising: (a) at least a non ionic surfactant comprising a hydrophilic unit and a hydrophobic unit, said hydrophilic unit containing poly(oxyalkylene) units responding to the [—(R 1 —O) z —] n with R 1 represents linear or branched alkylene groups, such as propylene or ethylene and z is an integer equal or higher than 1, preferably ranging from 1 to 40, the number n of said poly(oxyalkylene) units being equal or higher than 3, and (b) at least an alcohol compound of low molecular weight equal or less than 500 g/mol, wherein the weight ratio R of the non ionic surfactant/alcohol compound is such that 2.5≦R≦200 and the content of the at least alcohol compound by weight, relative to the total weight of the antimicrobial composition is ranging from 0.01% to 5%. The present invention also relates to an aqueous solution comprising the above mentionned antimicrobial and antifog composition, and dry microfiber tissue and non woven wet tissue impregnated with said aqueous solution, and an opticle article comprising a main surface coated with a temporary antimicrobial film or coating obtained by wiping said main surface with one of the above tissues.

First claim

1 .- 16 . (canceled)

17 . An antimicrobial composition comprising:
at least a non-ionic surfactant comprising a hydrophilic unit and a hydrophobic unit, said hydrophilic unit containing poly(oxyalkylene) units responding to the [—(R 1 —O) z —] n with R 1 represents linear or branched alkylene groups, and z is an integer equal or higher than 1, the number n of said poly(oxyalkylene) units being equal or higher than 3; and at least an alcohol compound of low molecular weight equal or less than 500 g/mol, wherein the weight ratio R of the non-ionic surfactant/alcohol compound is such that 2.5≦R≦200 and the content of the at least alcohol compound by weight, relative to the total weight of the antimicrobial composition ranges from 0.01% to 5%.

18 . The antimicrobial composition according to claim 17 , wherein the weight ratio R of the non-ionic surfactant/alcohol compound is such that 20≦R≦50.

19 . The antimicrobial composition according to claim 18 , wherein the weight ratio R of the non-ionic surfactant/alcohol compound is such that 20≦R≦40.

20 . The antimicrobial composition according to claim 17 , wherein the content of the at least alcohol compound by weight, relative to the total weight of the antimicrobial composition ranges from 0.25% to 2%.

21 . The antimicrobial composition according to claim 17 , wherein the content of the at least alcohol compound by weight, relative to the total weight of the antimicrobial composition ranges between 0.5 to 1.5%.

22 . The antimicrobial composition according to claim 17 , wherein the alcohol compound of low molecular weight is selected from mono-ol, diol, aromatic alkyl alcohol and fatty alcohol, the alcohol compound having 2 to 20 carbon atoms or the mixture thereof.

23 . The antimicrobial composition according to claim 22 , wherein the alcohol is selected from: ethanol, propan-1-ol, propan-2-ol, ethylene glycol, 1,1,1,-tricholoro-2-methylpropanol, propandiol, bromo-2-nitropropan-1,3-diol, 3-(p-chlorophenoxy)-propane-1,2-diol, butanediol, pentanediol, hexyleneglycol, octanediol, benzyl alcohol, biphenyl-2-ol, 2,6-dichlorobenzyl alcohol, chlorocresol, isopropyl-metacresol, phenylethyl alcohol, dichlorobenzyl alcohol, 5-chloro-2-(2,4-dichlorophenoxy)phenol, chloroxylenol, 2,2′-methylenbis(6-bromo-4-chlorophenol), benzyl-2-chloro-4-phenol, phenoxyethanol, phenoxypropanol, 3-(p-chlorophenoxy)-propane-1,2-diol, (phenylmethoxy)methanol, lauryl alcohol, cetyl alcohol, stearyl alcohol, cetearyl alcohol and myristyl alcohol or mixture thereof.

24 . The antimicrobial composition according to claim 17 , wherein the at least a non-ionic surfactant is selected from fluoroalkyl-polyoxyalkylenes, polyoxyalkylene glycols, polyoxyalkyene alkylether, polyoxyalkylene esters or mixture thereof.

25 . The antimicrobial composition according to claim 24 , wherein the at least a non-ionic surfactant is selected from polyoxyalkylene sorbitan-fatty acid esters and polyoxyethylene castor oils or mixture thereof.

26 . The antimicrobial composition according to claim 24 , wherein the surfactant is selected from fluoroalkyl-polyoxyalkylenes of formula: F(CF 2 ) s —(CH 2 —CH 2 O) r H (I), in which s and r are integers such that r ranges from 1 to 16, and s is equal or less than 10.

27 . The antimicrobial composition according to claim 24 , wherein the surfactant is selected from polyoxyalkylene sorbitan-fatty acid esters of formula (IX) below:

in which R a , R b , R c et R d are independently linear or branched alkylene groups of C 2 -C 6 , w, x, y and z are independently integers ≧1.

28 . The antimicrobial composition according to claim 27 , wherein R a , R b , R c et R d of formula (IX) are independently linear alkylene groups of C 2 -C 6 and w, x, y and z are independently integers between 1 to 40.

29 . The antimicrobial composition according to claim 17 , wherein the content of the at least a non-ionic surfactant, by weight, relative to the total weight of the antimicrobial composition ranges from 10 to 40%.

30 . The antimicrobial composition according to claim 17 , wherein the content of the at least a non-ionic surfactant, by weight, relative to the total weight of the antimicrobial composition ranges from 95 to 99.9%.

31 . An aqueous solution comprising by weight relative to the total weight of the preparation at least 50% of water and at least 10% of the antimicrobial composition according to claim 17 .

32 . The aqueous solution according to claim 31 , comprising by weight, relative to the total weight of the preparation, at least 60% of water.

33 . A dry microfiber tissue impregnated by an antimicrobial composition according to claim 17 .

34 . A dry microfiber tissue obtained by impregnation with an aqueous solution as defined in claim 31 , of microfiber tissue comprising microfibers made of polymers comprising polyester units and polyamide units, followed by drying said microfiber tissue.

35 . A non-woven wet tissue the structure of which comprises a hydrophilic polymer, said tissue being impregnated by an aqueous solution as defined in claim 31 .

36 . The non-woven wet tissue according to claim 35 , wherein the hydrophilic polymer is a hydrophilic polymer comprising cellulosic units.

37 . The non-woven wet tissue according to claim 35 , the structure of which further comprises a hydrophobic polymer.

38 . An optical article comprising a substrate having at least one main surface coated with a precursor coating of an antifog coating, wherein the coating precursor of the antifog coating is:
obtained through the grafting of at least one compound having a polyoxyalkylene group; and further coated with a film obtained by applying onto said precursor coating temporary film comprising an antimicrobial composition as defined in claim 17 .

39 . A method for imparting antimicrobial properties to an optical article having at least one main surface, comprising the application onto said main surface of a temporary antimicrobial film composition such as defined in claim 38 .

40 . The method of claim 39 , wherein the application onto said main surface comprises wiping said main surface with a tissue, the structure of which comprises a hydrophilic polymer and a hydrophobic polymer, said tissue being impregnated with said temporary antimicrobial film composition.

Assignees

• Satisloh Ag

Inventors

• Cadet Mamonjy

Classifications

• C11D3/0078

  Compositions for cleaning contact lenses, spectacles or lenses · CPC title

• A01N25/34

  Shaped forms, e.g. sheets, not provided for in any other sub-group of this main group · CPC title

• A61L2/18

  Liquid substances · CPC title

• A01N25/30 Primary

  characterised by the surfactants · CPC title

• A01N31/14

  Ethers · CPC title