Granted Patent B2

US 12,624,319 · App. 16/713,130 · Granted May 12, 2026

Inventors: Mark Robert Sivik (Mason, OH); Alan Edward Sherry (Mason, OH); Deepak Ahirwal (Brussels, BE); Frank William Denome (Cincinnati, OH); Zaiyou Liu (Cincinnati, OH); Kerry Andrew Vetter (Cincinnati, OH); Yousef Georges Aouad (Cincinnati, OH); Min Mao (Deerfield Township, OH)

Assignee: The Procter & Gamble Company

C11D17/044B08B3/003B08B9/00C11D1/83C11D3/0094C11D3/10C11D3/124C11D3/128C11D3/3953C11D3/3955C11D1/143C11D1/146C11D1/75C11D2111/14

Abstract

Claims (21)

1 . A method of cleaning soil from a toilet bowl containing water, the method comprising the steps of:

1) adding an active agent-containing a water disintegrable, particle containing foam producing pouch article comprising:

i) a soluble fibrous structure comprising one or more filaments, wherein the soluble fibrous structure encases;

ii) a particulate effervescent cleaning composition, wherein the particulate effervescent foaming composition comprises:

a) a particulate foaming surfactant selected from the group consisting of linear C11-C12 alkylbenzene sulfonate, sodium C12-C16 alkyl methyl taurate, sodium alkyl sulfate, C12-C18 alpha olefin sulfonate, disodium lauroyl or cocoyl glutamate, sulfonated C12-C16 alky polyglucoside, lauryl sulfosuccinate, C12-C16 dimethyl amine oxide, lauramido propyl betaine, cocamido propyl betaine, lauramido propyl hydroxyl sultaine, cocamido propyl hydroxyl sultaine, and mixtures thereof;

b) an effervescent agent selected from the group consisting of sodium bicarbonate, sodium carbonate, and mixtures thereof

c) an effervescent activator selected from the group consisting of citric acid, tartaric acid, sulfamic acid, sulfuric acid on silica carrier, and mixtures thereof;

d) an effervescent protecting agent selected from the group consisting of silica, zeolite, and mixtures thereof; and

e) an active agent selected from the group consisting of perfumes, soil release polymers, enzymes, bacterial spores, chelants, antimicrobial compounds, bleaches, and mixtures thereof;

to the water within the toilet bowl; wherein the fibrous structure exhibits a basis weight of greater than 10 g/m 2 to about 5000 g/m 2 ;

wherein the water disintegrable, particle containing foam producing pouch article exhibits a dry density of less than water;

2) allowing the water to rapidly disintegrate the article to produce a particle containing foam while the article floats on the water within the toilet bowl;

3) allowing particles of the effervescent foaming composition to deposit on walls of the toilet bowl surface above the water line of the toilet bowl; wherein

A) the particle containing foam producing pouch article exhibits an undissolved particle residue height of at least 1 cm, as measured by the foam height method described herein;

B) the undissolved particle residue height of at least 1 cm persists for about 1 hour; and

C) the particle containing foam particulate residue deposited on the walls of the toilet bowl comprises particles of unreacted or partially reacted particulate foaming surfactant previously suspended in the foam.

2 . The method of claim 1 wherein the active agent comprises a perfume comprising at least 30% by weight of at least one perfume ingredient having a boiling point greater than about 250° C. and a calculated C log P value greater than about 3.0.

3 . The method of claim 1 wherein the active agent comprises a bleach selected from the group consisting of potassium monopersulfate, 6-phthalimido peroxyhexanoic acid, sodium percarbonate, and mixtures thereof.

4 . The method of claim 1 , wherein the soluble fibrous structure forms a pouch which encases the particulate effervescent cleaning composition.

5 . The method of claim 1 , wherein the particulate effervescent cleaning composition is commingled with the soluble fibrous structure to form a coform structure.

6 . The method of claim 1 , wherein the foam comprises particles of particulate surfactant suspended in the foam.

Assignments (2)

Continuity (3)

References Cited (265)