Hydrogen peroxide compositions

Claim 2

A liquid composition for use in bleaching or disinfection comprising an emulsion containing an aqueous acidic solution of hydrogen peroxide, an organic phase and an emulsifying amount of an emulsifier, said organic phase comprising an enol ester activator having either of the following general formulae: ##STR2## in which each of R a and R b represent hydrogen or a C 1 to C 5 alkyl radical or a C 2 to C 4 alkenyl radical or a phenyl radical, R a and R b being the same or different or combining together to form a carbocyclic di-radical, R c represents hydrogen or a C 1 to C 5 alkyl radical or a phenyl radical or is combined with R a or R b and the olefin group to form a carbocyclic radical, R e represents hydrogen or a C 1 to C 3 alkyl radical or a phenyl radical, n is 1 or 2, when n=1, R d represents hydrogen or a C 1 to C 3 alkyl radical or a phenyl radical, when n=2, R d represents a C 2 to C 10 alkylene di-radical or a phenylene di-radical, and m is an integer from 0 to 8.

Claim 3

The composition of claim 1 in which the enol ester and hydrogen peroxide are present in an equivalent ratio of from 1:1 to 2:3.

Claim 4

The composition of claim 1 in which the concentration of hydrogen peroxide therein is from 3 to 20% by weight thereof.

Claim 5

The composition of claim 1 in which the proportion of enol ester activator therein is from 10 to 30% by weight thereof.

Claim 6

The composition of claim 1 in which the amount of emulsifier is from 10 to 70% by weight of the enol ester activator.

Claim 7

The composition of claim 5 which contains, by weight of the enol ester activator, from 10 to 50% of nonionic emulsifier and from 5 to 50% of anionic emulsifier.

Claim 8

The composition of claim 1 in which the aqueous phase has a pH of from 2 to 5.

Claim 9

The composition of claim 1 in which the enol ester activator of formula (i) or (ii) satisfies the condition that R a is a hydrogen, methyl or ethyl radical and R b and R c are each hydrogen or methyl radicals.

Claim 10

The composition of claim 1 in which the enol ester activator of formula (i) or (ii) respectively satisfies the condition that R d is an ethyl, methyl, phenyl, phenylene or C 2 -C 4 polymethylene radical or R e is a methyl, ethyl or phenyl radical.

Claim 11

The composition of claim 1 in which the enol ester activator of formula (ii) satisfies the condition that m is 0, 1 or 2.

Claim 12

The composition of claim 1 in which the activator is selected from the group consisting of vinyl or isopropenyl or butenyl acetate, divinyl glutarate or adipate or azelate or sebacate, vinyl or isopropenyl benzoate, divinyl phthalate or iso- or tere-phthalate, cyclohexenyl acetate and glutardienol or succindienol diacetate.

Claim 13

The composition of claim 1 in which the emulsifier(s) is or are selected from the group consisting of glycerol fatty acid esters, derivatives of lanolin, sorbitan fatty acid esters, POE alkyl phenols, POE amines, POE fatty acid esters, POE fatty alcohols, POE/POP block condensates, alkyl esters of sulphosuccinates and linear alkylbenzene sulphonates.

Claim 14

A process for the preparation of a liquid bleach or disinfectant composition which comprises the steps of: (a) blending together in a chamber or zone one or more enol esters having either of the general formulae: ##STR3## in which each of R a and R b represent hydrogen or a C 1 to C 5 alkyl radical or a C 2 to C 4 alkenyl radical or a phenyl radical, R a and R b being the same or different or combining together to form a carbocyclic di-radical, R c represents hydrogen or a C 1 to C 5 alkyl radical or a phenyl radical or is combined with R a or R b and the olefin group to form a carbocyclic radical, R e represents hydrogen or a C 1 to C 3 alkyl radical or a phenyl radical, n is 1 or 2, when n=1, R d represents hydrogen or a C 1 to C 3 alkyl radical or a phenyl radical, when n=2, R d represents a C 2 to C 10 alkylene di-radical or a phenylene di-radical, and m is an integer from 0 to 8 with one or more emulsifiers therefor at a temperature so selected that the resultant blend is in the liquid state, (b) preparing in a second chamber or zone an aqueous acidic solution of hydrogen peroxide, (c) when necessary cooling either or both of the blend and the aqueous solution, so that upon mixing the mixture has a temperature below 50° C., (d) adding, if necessary, emulsifier to the aqueous solution so that the total weight of the emulsifier in said mixture is at least 5% by weight of the enol ester, (e) mixing the blend and the aqueous solution with each other in an equivalent mole ratio of enol ester to hydrogen peroxide within the range 5:1 to 1:10, and (f) subjecting the mixture simultaneously or subsequently to a shearing force thereby to form an emulsion.

Claim 15

A process for the preparation of a liquid bleach or disinfectant composition which comprises the steps of: (a) blending together in a chamber or zone one or more enol esters having either of the general formulae: ##STR3## in which each of R a and R b represent hydrogen or a C 1 to C 5 alkyl radical or a C 2 to C 4 alkenyl radical or a phenyl radical, R a and R b being the same or different or combining together to form a carbocyclic di-radical, R c represents hydrogen or a C 1 to C 5 alkyl radical or a phenyl radical or is combined with R a or R b and the olefin group to form a carbocyclic radical, R e represents hydrogen or a C 1 to C 3 alkyl radical or a phenyl radical, n is 1 or 2, when n=1, R d represents hydrogen or a C 1 to C 3 alkyl radical or a phenyl radical, when n=2, R d represents a C 2 to C 10 alkylene di-radical or a phenylene di-radical, and m is an integer from 0 to 8 with one or more emulsifiers therefor at a temperature so selected that the resultant blend is in the liquid state, (b) preparing in a second chamber or zone an aqueous acidic solution of hydrogen peroxide, (c) when necessary cooling either or both of the blend and the aqueous solution, so that upon mixing the mixture has a temperature below 50° C., (d) adding, if necessary, emulsifier to the aqueous solution so that the total weight of the emulsifier in said mixture is at least 5% by weight of the enol ester, (e) mixing the blend and the aqueous solution with each other in an equivalent mole ratio of enol ester to hydrogen peroxide within the range 5:1 to 1:10, and (f) subjecting the mixture simultaneously or subsequently to a shearing force thereby to form an emulsion.