The Procter Gamble Company

Laura Bueno Romo

Carlos Amador Zamarreno

Anju Deepali Massey Brooker

Philip Frank Souter

Alan Thomas Brooker

Robby Renilde Francois Keuleers

Nigel Patrick Somerville Roberts

Andre Chieffi

Andrew Philip Moon

Eric San Jose Robles

Katherine Esther Latimer

Libbi Moon

Despeina Zympeloudi

Carlos Amador Zammarreno

Evangelia Argentou

Despoina Zympeloudi

A method of laundering fabric, where the method includes the steps of:

Method of laundering fabric

A method of laundering fabrics includes: a) contacting a laundry detergent to water to form a wash liquor, wherein the laundry detergent includes detersive surfactant, wherein the wash liquor includes detersive surfactant at a concentration in the range of from 100 ppm to 2500 ppm; b) contacting fabric to the wash liquor, and washing the fabric in the wash liquor; c) after a period of time of at least 6 minutes from contacting the fabric to the wash liquor, introducing calcium cations into the wash liquor to form a calcium enriched wash liquor, wherein the calcium enriched wash liquor includes calcium cations at a concentration in the range of from 20 ppm to 400 ppm; d) washing the fabric in the calcium-enriched wash liquor for a period of time of at least 2 minutes; and e) removing the excess calcium-enriched wash liquor from the fabric, and rinsing the fabric in water.

The present invention provides a method for treating fabrics by employing an automatic laundry washing machine to selectively add agitation-sensitive detersive actives into the wash liquor during a wash cycle when the mechanical agitation power applied to the fabrics by said washing machine is more than 12 W/kg, so as to improve or optimize the cleaning performance of such agitation-sensitive detersive actives.

Method of treating fabrics with selective dosing of agitation-sensitive ingredients

A method of laundering fabric including: (a) calculating a final amount of water to be added to a final wash bath; (b) calculating the amount of energy needed to heat this final amount of water to a desired final temperature; (c) contacting an amount of water that is less than the final amount water with fabric to form an intermediate wash bath, wherein a detergent composition is contacted to the fabric during the formation of the intermediate wash bath, or prior to the formation of the intermediate wash bath; (d) heating the water that contacts the fabric during (c) with the energy calculated in (b) such that the intermediate wash bath has a temperature above the desired final temperature; (e) washing the fabric in the intermediate wash bath for at least 3 minutes; (f) contacting the remaining amount of water to the intermediate wash bath to form the final wash bath having the desired final temperature; (g) washing the fabric in the final wash bath for at least 5 minutes; and (h) rinsing the fabric.

The present invention comprises a process of washing fabrics using a water-soluble unit dose article.

Process for washing fabrics

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Newcastle upon Tyne, United Kingdom

Laura Bueno Romo