Lever Brothers Company, Division of Conopco, Inc.

Unilever Home and Personal Care Usa, Division of Conopco, Inc.

Lever Brothers Company

Conopco, Inc.

Unilever Home & Personal Care Usa, a Division of Conopco, Inc.

Unilever Home & Personal Care USA

John George Chambers

Bryan Stuart Joy

Geoffrey Irlam

Michael Paul Aronson

Sergio Roberto Leopoldino

Charles Craig Nunn

Terry Instone

Melissa Iva Katz

John Gerrard Sheehan

David Serridge

Christine Gorman

Shana Azri-Meehan

Graham Andrew Turner

Stephen Thomas Keningley

Jonathan Osler

Margaret Jobling

William John Wilson

Ailsa Pauline Grieveson

Izumi Kutsuwa

Brian S Joy

Phillip Moore

Geoffrey Trlam

Izuma Kutsuwa

Steven James Kynaston

A process for manufacturing detergent particles comprising the steps of: a) forming a liquid surfactant blend comprising a major amount of surfactant and a minor amount of water, the surfactant part consisting of at least 51 wt % linear alkylbenzene sulfonate and at least one co-surfactant, the surfactant blend consisting of at most 20 wt % nonionic surfactant; b) drying the liquid surfactant blend of step (a) in an evaporator or drier to a moisture content of at most 2 wt % and cooling the output from the evaporator or dryer; c) feeding the cooled material, which output comprises at least 93 wt % surfactant blend with a major part of LAS, to an extruder, optionally along with less than 10 wt % of other materials such as perfume, fluorescer, and extruding the surfactant blend to form an extrudate while periodically cutting the extrudate to form hard detergent particles with a diameter across the extruder of greater than 2 mm and a thickness along the axis of the extruder of greater than 0.2 mm, provided that the diameter is greater than the thickness; d) optionally, coating the extruded hard detergent particles with up to 30 wt % coating material selected from powdered inorganic material and mixtures of such material and nonionic material with a melting point in the range 40 to 90&#xb0; C.

Manufacture of high active detergent particles

A personal wash liquid composition which comprises 10 to 40% of one or more anionic surfactants, 30 to 50% of one or more humectants, and less than 55% water, characterized in that the water activity of the product is less than 0.9. Compositions according to the invention have been found to have self-preserving properties.

Personal cleansing compositions containing high levels of humectants

The invention discloses bars comprising fatty acid soaps, free fatty acid, polyalkylene glycol and specific salts of protic acid (i.e., having pKa1 less than 6, preferably less than 5.5). Using specific equivalent molar ratios of free fatty acid to protic acid salt and specific wt. ratio of free fatty acid to PAG and salt of protic acid, applicants obtain bars having sensory feel of soap and which improve skin condition is measured in Controlled Application Wash Test.

Bar comprising soap, fatty acid, polyalkylene glycol and protic acid salts in critical ratios and providing enhanced skin care benefits

Synthetic detergent bar and manufacture thereof

Liquid personal wash composition comprises a synthetic anionic surfactant and an amphoteric surfactant in range of 4:1 to 0.1:1. Use of levels of at least 10% of a specified PEG provides both enhanced lather and enhanced mildness.

Personal liquid cleansing composition comprising high levels of polyethylene glycol

A soap bar comprises 40-85% soap, 1-40% water immiscible benefit agent 1-40% solid water soluble carrier and 5-25% water. The carrier is initially mixed with the benefits agent to form a premix which is subsequently dispersed into the soap. Suitable benefit agents are oils and humectants whereas suitable carriers are starches, modified starches and water soluble solid polymers.

Process for producing soap bars

Soap bar

The invention discloses process for making bars comprising fatty acid soaps, free fatty acid, polyalkylene glycol and specific salts of protic acid (i.e., having pKa1 less than 6, preferably less than 5.5). Using specific equivalent molar ratios of fatty acid to protic acid salt and specific wt. ratio of PAG and salt of protic acid to free fatty acid, applicants obtain bars having sensory feel of soap and which improve skin condition in Controlled Application Wash Tests.

Process of making soap bar with enhanced skin benefits comprising adding salts of specific protic acid

A detergent composition which is suitable for making into bars for personal washing comprises:

Synthetic bar comprising high levels of alkylene oxide as structurant

An aqueous liquid detergent composition comprises a mixture of synthetic anionic and amphoteric surfactants in a weight ratio within the range 4:1 to 0.1:1 and a polyethylene glycol having a molecular weight of not more than 100,00. The later component boosts the lather of the composition during use. It may also enhance the mildness of the formulation.

Cleansing composition containing polyethylene glycol

A personal care composition in the form of an aqueous liquid comprises:

Personal care composition

The invention relates to mild toilet soap bars, comprising blends of soap with one or more coactives. There is a need for mild bars which do not have the processing problems associated with the use of superfatting agents and co-actives, which can be made without difficulty on conventional soap production lines without substantial modification of the lines and yet provide a product with reduced harshness while maintaining lathering and structural properties. Moreover, it is desirable that soap bars should not suffer from the defect of grittiness and also have a composition which contains relatively low levels of the significantly more expensive lauric fats. We have determined that in soap bars which comprise at least 25% wt. on total actives of lauric acid soaps; as the balance of the soaps, non-lauric soaps having an iodine value of less than 45; at least 5% wt. on total actives of one or more synergistic mildness active, and, 2-10% on total actives of free fatty acids and are substantially free of cationic polymer skin mildness aids, there is a significant reduction in bar stickiness while maintaining hardness within acceptable limits. Moreover, the lather volume of the bars is increased without the addition of lauric fats and they do not suffer from grittiness.

Toilet soap bars

An aqueous liquid cleansing and moisturising composition comprising a surface active agent and a benefit agent in which the surface active agent and benefit agent are separate but combinedly dispensable from a single packaging means in a predetermined ratio as discrete domains. Separating the benefit agent from the surface active agent results in improved deposition of the benefit agent.

Detergent compositions containing separate stripes of surface active

Formation of soap bars comprising fatty isethionate esters and fatty acid can be achieved without an energetic mixing step by forming an isotropic solution of the fatty isethionate ester, fatty acid and water.

Soap bars made with ternary system of fatty isethionate ester, fatty

A translucent detergent bar is provided containing with respect to the total weight of the bar 25 to 34 wt % soap, 5 to 15 wt % alcohol, 15 to 30 wt % sugar and/or cyclic polyol, and 15 to 30 wt % water, the soap comprising a soap mixture consisting of 18 to 26 wt % soluble soaps and 8 to 16 wt % insoluble soaps calculated with respect to the total weight of the bar. The bar has good user properties and yet can be a low cost bar due to its relatively low soap content.

Growing community of inventors

Wirral, United Kingdom

John George Chambers