1. Composition for washing keratin materials, characterized in that it comprises, in a cosmetically acceptable aqueous medium containing at least one anionic detergent surfactant, at least one sorbitan ester of a saturated or unsaturated, linear or branched C8-C30 fatty acid, oxyethylenated with a number of moles of ethylene oxide of less than or equal to 10, in a weight ratio anionic detergent surfactantsorbitan ester ranging from 0.5 to 5.
2. Composition according to claim 1, characterized in that it contains at least one C8-C20 fatty acid ester of sorbitan oxyethylenated with a number of moles of ethylene oxide of less than or equal to 10.
3. Composition according to claim 1 or 2, characterized in that the oxyethylenated sorbitan ester contains 3 to 8 mol of ethylene oxide.
4. Composition according to any one of claims 1 to 3, characterized in that the sorbitan ester is a sorbitan monoester.
5. Composition according to any one of claims 1 to 4, characterized in that the sorbitan ester is chosen from oxyethylenated sorbitan monolaurate (4EO), oxyethylenated sorbitan monostearate (4EO) and oxyethylenated sorbitan monooleate (5EO).
6. Composition according to any one of claims 1 to 5, characterized in that the sorbitan ester is present in proportions of from 0.5% to 20% and preferably from 2% to 15% relative to the weight of the said composition.
7. Composition according to any one of claims 1 to 6, characterized in that it also comprises a detergent surfactant chosen from nonionic surfactants other than oxyethylenated C8-C30 fatty acid esters of sorbitan with a number of moles of ethylene oxide of less than or equal to 10, and amphoteric and zwitterionic surfactants.
8. Composition according to any one of claims 1 to 7, characterized in that the detergent surfactants are present in proportions of between 1% and 50% by weight relative to the total weight of the composition and preferably between 5% and 40% by weight.
9. Composition according to any one of claims 1 to 8, characterized in that it also contains one or more cationic surfactants.
10. Composition according to any one of claims 1 to 9, characterized in that it also contains one or more silicones.
11. Composition according to any one of claims 1 to 10, characterized in that it also contains one or more cationic or amphoteric polymers.
12. Composition according to claim 11, characterized in that it contains at least one cationic polymer chosen from cellulose ether derivatives comprising quaternary ammonium groups, polysaccharides, in particular cationic guar gums and cyclopolymers of methyldiallylammonium or of dimethyldiallylammonium.
13. Composition according to any one of claims 1 to 12, characterized in that it also contains viscosity regulators, such as electrolytes, for instance sodium chloride, thickeners, for instance cellulose derivatives, guar gum, hydroxypropyl guar gums, scleroglucans, xanthan gum and amphiphilic polymers comprising at least one fatty chain.
14. Composition according to any one of claims 1 to 13, characterized in that it also contains one or more adjuvants chosen from fragrances, preserving agents, foam synergists, sequestering agents, foam stabilizers, propellants, dyes, antidandruff agents, ceramides, vitamins or provitamins, hydroxy acids, acidifying or basifying agents, plant, mineral or animal oils, synthetic oils such as polyisobutenes and polydecenes, fatty acid esters, pseudoceramides and nacreous agents.
15. Use of at least one C8-C30 fatty acid ester of sorbitan having a number of moles of ethylene oxide of less than or equal to 10, with the aim of reducing the eye-irritant potential and of improving the thickening of compositions for washing keratin materials comprising a detergent surfactant.
16. Use according to claim 15, in a shampoo.
17. Process for washing keratin materials, characterized by the application of at least one composition as defined in any one of claims 1 to 14 to these materials, followed by rinsing of the treated materials after an optional exposure time.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. Method for cleaning a welding torch, comprising directing by means of at least one jet nozzle a cold abrasive comprising a stream of compressed air in which CO2 particles are entrained against a predetermined area of the torch to be cleaned while rotating the at least one jet nozzle around an axis of symmetry of the welding torch so that a complete cleaning coverage of the area to be cleaned is achieved.
2. Method according to claim 1, further comprising applying pulsation of intensity to the stream.
3. Method according to claim 1 or 2 wherein the stream of compressed air in which CO2 particles are entrained is apportioned according to the number of jet nozzles employed.
4. Method according to claim 1, wherein the cold abrasive comprises the CO2 pellets or CO2 snow.
5. Apparatus for cleaning a welding torch with an axis of symmetry and having an outer gas nozzle shield and an interior area of the torch, which is to be cleaned, said apparatus comprising:
a source of CO2 particles;
a source for a stream of compressed air;
means for feeding the CO2 particles into the stream of compressed air in order to entrain the CO2 particles in the stream;
at least one jet nozzle having discharge ends, for directing the stream of compressed air with the CO2 particles entrained therein and
means for rotating the at least one jet nozzle around said axis, wherein said discharge ends of the at least one jet nozzle are inclined relative to said axis in order to aim the stream at said interior area to clean said interior area by with said stream as the at least one jet nozzle rotates about said axis.
6. Apparatus for cleaning a welding torch with an axis of symmetry and having an outer gas nozzle shield and an interior area and an exterior area of the torch, which are to be cleaned, said apparatus comprising:
a source of CO2 particles;
a source of a stream of compressed air;
means for feeding the CO2 particles into the stream of compressed air in order to entrain the CO2 particles in the stream;
at least one jet nozzle having discharge ends, for directing the stream of compressed air with the CO2 particles entrained therein; and
means for rotating the at least one jet nozzle around said axis, wherein said discharge ends of the at least one jet nozzle are substantially parallel to said axis in order to aim the stream at said interior and exterior areas to clean said interior and exterior areas with said stream as the at least one jet nozzle rotates about the axis.