Hypochlorite bleach compositions containing optical brighteners

Claim 2

An aqueous composition comprising: (a) from about 3% to about 8% sodium hypochlorite; (b) from about 0.025% to about 0.2 % of an optical brightener having the formula: ##STR4## or the alkali metal salts thereof; (c) from about 0.05% to about 2% of a surfactant selected from the group consisting of alkylaryl sulfonates having the formulas: ##STR5## wherein R 1 is a C 8 -C 20 alkyl group, R 2 and R 3 are C 6 -C 16 alkyl groups, M is alkali metal and n is 0 or 1; and (d) at least about 80% water; wherein the brightener is present in the composition in the form of fibrous particles having fiber diameters of from about 0.01 to about 1.5 microns.

Claim 3

The composition of claim 1 additionally comprising up to about 0.5% of a perfume material which is stable against chemical attack by sodium hypochlorite.

Claim 4

The composition of claims 1 or 2 wherein the amount of sodium hypochlorite in the finished composition is from about 4% to about 6%.

Claim 5

The composition of claims 1 or 2 wherein the amount of optical brightener in the finished composition is from about 0.05% to about 0.2%.

Claim 6

The composition of claims 1 or 2 wherein the amount of surfactant in the finished composition is from about 0.2% to about 1%.

Claim 7

An aqueous composition comprising: (a) from about 3% to about 8% sodium hypochlorite; (b) from about 0.025% to about 0.2% of an optical brightener having the formula: ##STR6## or the alkali metal salts thereof; (c) from about 0.05% to about 2% of a surfactant selected from the group consisting of alkylaryl sulfonates having the formulas: ##STR7## wherein R 1 is a C 8 -C 20 alkyl group, R 2 and R 3 are C 6 -C 16 alkyl groups, M is alkali metal and n is 0 or 1; and (d) at least about 80% water; wherein the brightener is present in the composition in the form of fibrous particles; the said compositions being made by a process comprising the steps of:

Claim 8

An aqueous composition comprising: (a) from about 3% to about 8% sodium hypochlorite; (b) from about 0.025% to about 0.2% of an optical brightener having the formula: ##STR6## or the alkali metal salts thereof; (c) from about 0.05% to about 2% of a surfactant selected from the group consisting of alkylaryl sulfonates having the formulas: ##STR7## wherein R 1 is a C 8 -C 20 alkyl group, R 2 and R 3 are C 6 -C 16 alkyl groups, M is alkali metal and n is 0 or 1; and (d) at least about 80% water; wherein the brightener is present in the composition in the form of fibrous particles; the said compositions being made by a process comprising the steps of:

Claim 9

preparing an aqueous solution containing from about 0.05% to about 0.2% of the optical brightener and from about 0.1% to about 4% of the surfactant; 2. adding slowly, and with the low shear mixing, to the solution of Step 1, a sufficient amount of aqueous sodium hypochlorite to produce a final composition comprising from about 3% to about 8% sodium hypochlorite, from about 0.025% to about 0.2% optical brightener and from about 0.05% to about 2% surfactant.

Claim 10

preparing an aqueous solution containing from about 0.05% to about 0.2% of the optical brightener and from about 0.1% to about 4% of the surfactant; 2. adding slowly, and with the low shear mixing, to the solution of Step 1, a sufficient amount of aqueous sodium hypochlorite to produce a final composition comprising from about 3% to about 8% sodium hypochlorite, from about 0.025% to about 0.2% optical brightener and from about 0.05% to about 2% surfactant.

Claim 11

The composition of claim 6 additionally comprising up to about 0.5% of a perfume material which is stable against chemical attack by sodium hypochlorite, wherein said perfume material is added to the aqueous solution of Step 1 after the surfactant has been added.

Claim 12

The composition of claims 6 or 7 wherein the amount of sodium hypochlorite in the finished composition is from about 4% to about 6%.

Claim 13

The composition of claims 6 or 7 wherein the amount of optical brightener in the finished composition is from about 0.05% to about 0.075%.

Claim 14

The composition of claims 6 or 7 wherein the amount of optical brightener in the finished composition is from about 0.05% to about 0.2%.

Claim 15

The composition of claims 6 or 7 wherein the amount of surfactant in the finished composition is from about 0.2% to about 1%.

Claim 16

The composition of claim 4 wherein the surfactant is selected from the group consisting of alkylaryl sulfonates having the formulas: ##STR8## wherein R 1 is a C 11 -C 13 alkyl group, R 2 and R 3 are C 10 -C 12 alkyl groups, M is alkali metal and n is 0 or 1.

Claim 17

The composition of claim 5 wherein the surfactant is selected from the group consisting of alkylaryl sulfonates having the formulas: ##STR9## wherein R 1 is a C 11 -C 13 alkyl group, R 2 and R 3 are C 10 -C 12 alkyl groups, M is alkali metal and n is 0 or 1.

Claim 18

The composition of claim 10 wherein the surfactant is selected from the group consisting of alkylaryl sulfonates having the formulas: ##STR10## wherein R 1 is a C 11 -C 13 alkyl group, R 2 and R 3 are C 10 -C 12 alkyl groups, M is alkali metal and n is 0 or 1.

Claim 19

The composition of claim 11 wherein the surfactant is selected from the group consisting of alkylaryl sulfonates having the formulas: ##STR11## wherein R 1 is a C 11 -C 13 alkyl group, R 2 and R 3 and C 10 -C 12 alkyl groups, M is alkali metal and n is 0 or 1.