Methods and equipment for removing stains from fabrics using a composition comprising hydroxide and hypochlorite
OwnerLawnie Taylorinventor
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Abstract
Methodologies and equipment for using a hypochlorite solution to remove menstrual fluid, underarm perspiration or other hard-to-remove stains from soft fabric articles with reduced damage to the fabric articles when compared with popular chlorine bleaches. The soft fabric articles preferably are in white, although the present invention can also be applied to articles in other colors. In one embodiment, the weight concentration ratio of the alkali metal hydroxide over the hypochlorite salt in the hypochlorite solution is no less than 1:12.5. The hypochlorite solution may contain at least 0.2% by weight of sodium hydroxide and/or have a pH of at least 11.8.
Claims33
A method for reducing the damaging effect of a hypochlorite salt-containing solution on a soft fabric article, comprising the steps of:
- (a) modifying the solution by adding an alkali metal hydroxide to the solution, such that the weight concentration ratio of the alkali metal hydroxide over the hypochlorite salt in the modified solution is no less than 1:12.5,
- wherein the modified solution consists of the hypochlorite salt, the alkali metal hydroxide, and water;
- and
- (b) contacting the modified solution with a stain on the soft fabric article for at least one minute to remove the stain.
A method for reducing the damaging effect of a hypochlorite salt-containing solution on a soft fabric article, comprising the steps of:
- (a) modifying the solution by adding an alkali metal hydroxide to the solution, such that the pH of the modified solution is at least 11.8, wherein the modified solution consists of a hypochlorite salt, the alkali metal hydroxide, and water;
- and
- (b) contacting the modified solution with a stain on the soft fabric article for at least one minute to remove the stain.
A kit useful for removing a stain from a soft fabric article, said kit comprising:
- a cleaning composition which consists of water and an effective amount of a hypochlorite salt and an alkali metal hydroxide, the weight concentration ratio of the alkali metal hydroxide over the hypochlorite salt being no less than 1:12.5.
A kit useful for removing a stain from a soft fabric article utilizing a hypochlorite salt-containing solution, said kit comprising:
- a first compartment which consists of sodium hypochlorite and water;
- and
- a second compartment which consists of sodium hydroxide.
A method for reducing the damaging effect of a hypochlorite salt-containing solution on a soft fabric article, comprising the steps of:
- (a) modifying the solution by adding an alkali metal hydroxide to the solution, such that the weight concentration ratio of the alkali metal hydroxide over the hypochlorite salt in the modified solution is no less than 1:12.5, and wherein said modified solution consists of the hypochlorite salt the alkali metal hydroxide, and water;
- and
- (b) contacting said modified solution with a stain on the soft fabric article for at least one minute, thereby effectuating removal of the stain while reducing the damaging effect of said modified solution on said soft fabric article.
A method for reducing the damaging effect of a hypochlorite salt-containing solution on a soft fabric article, comprising the steps of:
- (a) modifying the solution by adding an alkali metal hydroxide to the solution, such that the pH of the modified solution is at least 11.8, and wherein said modified solution consists of a hypochlorite salt the alkali metal hydroxide, and water;
- and
- (b) contacting said modified solution with a stain on the soft fabric article for at least one minute, thereby effectuating removal of the stain while reducing the damaging effect of said modified solution on said soft fabric article.
Dependencies are inferred from the claim text.