Disinfection of instruments
The invention relates to a powdered disinfectant containing a peroxide, an acylating agent and nonionic surfactants and to the use of this disinfectant for disinfecting surfaces and instruments, particularly in the medical field.
1 - 9 . (canceled)
10 . A powdered peracetic acid disinfectant composition comprising:
(a) a peroxide;
(b) an acylating agent; and
(c) a nonionic surfactant selected from the group consisting of linear or 2-methyl-branched ether alcohols having the formula
R—O—(PO) 1-2 -(EO) 6-8 —H
wherein R is
C 8 =0 to 5% by weight of the nonionic surfactant in the composition;
C 9-10 =75 to 90% by weight of the nonionic surfactant in the composition;
C 1-12 =5 to 15% by weight of the nonionic surfactant in the composition;
C 13-14 =4 to 10% by weight of the nonionic surfactant in the composition; and
C 15-16 =0 to 3% by weight of the nonionic surfactant in the composition and the nonionic surfactant is free of alkoxylated alkyl phenol.
11 . The composition of claim 10 , wherein the peroxide is selected from the group consisting of sodium perborate monohydrate, sodium perborate tetrahydrate, sodium percarbonate, and mixtures thereof.
12 . The composition of claim 10 , wherein the acylating agent is selected from the group consisting of tetraacetyl glycoluril, tetraacetyl ethylenediamine, diacetyl hexahydrotriaone dione, and mixtures thereof.
13 . The composition of claim 10 , further comprising
from about 10 to about 70 wt. % peroxide;
from about 10 to about 40 wt. % acylating agent; and
from about 0.1 to about 10 wt. % nonionic surfactant.
14 . The composition of claim 10 , further comprising:
from about 15 to about 60 wt. % peroxide;
from about 15 to about 30 wt. % acylating agent; and
from about 0.5 to about 5 wt. % nonionic surfactant.
15 . The composition of claim 10 , further comprising a soluble inorganic salt.
16 . The composition of claim 10 , further comprising additional auxiliary ingredients.
17 . A method of disinfecting a surface comprising:
(a) providing a peracetic acid use composition in an amount effective to kill an organism selected from the group consisting of gram-positive bacteria, mycobacteria, viruses, and mixtures thereof, said use composition comprising from about 1 to about 10 wt. % of a powder diluted in water, said powder comprising:
(i) a peroxide;
(ii) an acylating agent; and
(iii) a nonionic surfactant selected from the group consisting of linear or 2-methyl-branched ether alcohols having the formula
R—O—(PO) 1-2 -(EO) 6-8 —H
wherein R is
C 8 =0 to 5% by weight of the nonionic surfactant in the composition;
C 9-10 =75 to 90% by weight of the nonionic surfactant in the composition;
C 11-12 =5 to 15% by weight of the nonionic surfactant in the composition;
C 13-14 =4 to 10% by weight of the nonionic surfactant in the composition; and
C 15-16 =0 to 3% by weight of the nonionic surfactant in the composition and the nonionic surfactant is free of alkoxylated alkyl phenol; and
(b) applying said use composition to a surface.
18 . The method of claim 17 , wherein the surface is a medical instrument.
19 . The method of claim 17 , wherein the peroxide is selected from the group consisting of sodium perborate monohydrate, sodium perborate tetrahydrate, sodium percarbonate, and mixtures thereof.
20 . The method of claim 17 , wherein the acylating agent is selected from the group consisting of tetraacetyl glycoluril, tetraacetyl ethylenediamine, diacetyl hexahydrotriaone dione, and mixtures thereof.
21 . The method of claim 17 , the powder further comprising
from about 10 to about 70 wt. % peroxide;
from about 10 to about 40 wt. % acylating agent; and
from about 0.1 to about 10 wt. % nonionic surfactant.
22 . The method of claim 17 , the powder further comprising:
from about 15 to about 60 wt. % peroxide;
from about 15 to about 30 wt. % acylating agent; and
from about 0.5 to about 5 wt. % nonionic surfactant.
23 . The method of claim 17 , the powder further comprising a soluble inorganic salt.
24 . The method of claim 17 , the powder further comprising additional auxiliary ingredients.
25 . A powdered peracetic acid disinfectant composition comprising:
(a) a peroxide;
(b) an acylating agent; and
(c) a nonionic surfactant selected from the group consisting of linear or 2-methyl-branched ether alcohols having the formula
R—O—(PO) 1-2 -(EO) 6-8 —H
wherein R is at least about 75% by weight C 10 of the nonionic surfactant in the composition;
and the nonionic surfactant is free of alkoxylated alkyl phenol.