Method for reducing gelling between a liquid laundry detergent and a liquid fabric enhancer
AssigneeThe Procter & Gamble Company
InventorsNigel Patrick SOMERVILLE ROBERTS, Ming TANG, Gayle Marie FRANKENBACH
Life of this patent
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Abstract
A method is provided for reducing undesired gelling between a liquid laundry detergent and a liquid fabric enhancer inside an automatic laundry washing machine, by employing, in combination, liquid laundry detergent and liquid fabric enhancer of specific compositional characteristics. Laundry cleaning system and fabric cleaning kit that promote the combined use of such liquid laundry detergent and such liquid fabric enhancer.
Claims20
A method of reducing gelling between a liquid laundry detergent and a liquid fabric enhancer inside an automatic laundry washing machine, comprising the steps of:
- a. providing a liquid laundry detergent that is characterized by:
- (i) a water content of no more than 15 wt %;
- (ii) a nonionic surfactant content ranging from 3 wt % to 50 wt %;
- and (iii) an anionic surfactant content ranging from 10 wt % to 50 wt %, by total weight of said liquid laundry detergent;
- b. providing a liquid fabric enhancer that comprises from 2 wt % to 90 wt % of a fabric softening agent, by total weight of said liquid fabric enhancer, wherein said liquid laundry detergent and said liquid fabric enhancer, when combined at a 1:1 weight ratio, are characterized by:
- (i) a total surfactant content of greater than 25 wt %;
- and (ii) a total organic solvent content of greater than 7.5 wt %, by total weight of said liquid laundry detergent and said liquid fabric enhancer combined;
- c. providing an automatic laundry washing machine that is configured so that at least an undiluted portion of the liquid laundry detergent comes into contact with at least an undiluted portion of the liquid fabric enhancer in said automatic laundry washing machine;
- and
- d. using said liquid laundry detergent and said liquid fabric enhancer inside said automatic laundry washing machine to treat fabrics.
A laundry cleaning system, comprising an automatic laundry washing machine that comprises a cleaning chamber, a water supply, a detergent dispenser, a fabric enhancer dispenser, wherein said detergent dispenser contains a liquid laundry detergent, wherein said fabric enhancer dispenser contains a liquid fabric enhancer, and wherein said detergent dispenser and said fabric enhancer dispenser are arranged so that at least an undiluted portion of the liquid laundry detergent comes into contact with at least an undiluted portion of the liquid fabric enhancer in said automatic laundry washing machine;
- wherein said liquid laundry detergent is characterized by:
- (i) a water content of no more than 15 wt %;
- (ii) a nonionic surfactant content ranging from 3 wt % to 50 wt %;
- and (iii) an anionic surfactant content ranging from 10 wt % to 50 wt %, by total weight of said liquid laundry detergent;
- wherein said liquid fabric enhancer comprises from 2 wt % to 90 wt % of a fabric softening agent, by total weight of said liquid fabric enhancer;
- and
- wherein said liquid laundry detergent and said liquid fabric enhancer, when combined at a 1:1 weight ratio, are characterized by:
- (i) a total surfactant content of greater than 25 wt %;
- and (ii) a total organic solvent content of greater than 7.5 wt %, by total weight of said liquid laundry detergent and said liquid fabric enhancer combined.
A fabric cleaning kit comprising:
- a. a first primary package containing a liquid laundry detergent;
- b. a second, separate primary package containing a liquid fabric enhancer;
- and
- c. a secondary package containing said first primary package and said second primary package;
- wherein said liquid laundry detergent is characterized by:
- (i) a water content of no more than 15 wt %;
- (ii) a nonionic surfactant content ranging from 3 wt % to 50 wt %;
- and (iii) an anionic surfactant content ranging from 10 wt % to 50 wt %, by total weight of said liquid laundry detergent;
- wherein said liquid fabric enhancer comprises from 2 wt % to 90 wt % of a fabric softening agent, by total weight of said liquid fabric enhancer;
- and
- wherein said liquid laundry detergent and said liquid fabric enhancer, when combined at a 1:1 weight ratio, are characterized by:
- (i) a total surfactant content of greater than 25 wt %;
- and (ii) a total organic solvent content of greater than 7.5 wt %, by total weight of said liquid laundry detergent and said liquid fabric enhancer combined.
Dependencies are inferred from the claim text.