Bleaching composition for keratin fibers, comprising a combination of two polyurethane polyethers
AssigneeL'oreal
InventorFrédéric Legrand
Life of this patent
Estimating the term…
Abstract
Bleaching compositions comprising at least one oxidizing agent and at least one combination of two polyurethane polyethers. Processes and devices for bleaching using the aforesaid compositions.
Claims67
A composition for bleaching keratin fibers comprising, in a medium appropriate for bleaching, at least one oxidizing agent, wherein said composition further comprises a combination of at least:
- one polyurethane polyether (a) which can be obtained by polycondensation of at least three compounds comprising (i) at least one polyethylene glycol comprising from 50 to 500 mol of ethylene oxide, (ii) at least one C8-C30 fatty alcohol, and (iii) at least one diisocyanate and,
- one polyurethane polyether (b) which can be obtained by polycondensation of at least three compounds comprising (i) at least one polyethylene glycol comprising from 50 to 500 mol of ethylene oxide, (ii) at least one C8-C30 fatty alcohol other than that of the at least one polyurethane polyether (a), and (iii) at least one diisocyanate.
A process for bleaching keratin fibers comprising applying, in a medium appropriate for bleaching, a composition to said fibers, allowing the composition to act for an exposure time ranging from 1 to 60 minutes, rinsing the fibers, optionally washing the fibers with shampoo, after said optional washing, rinsing the fibers again and drying, and wherein said composition comprises at least one oxidizing agent, wherein said composition comprises a combination of at least:
- one polyurethane polyether (a) which can be obtained by polycondensation of at least three compounds comprising (i) at least one polyethylene glycol comprising from 50 to 500 mol of ethylene oxide, (ii) at least one C8-C30 fatty alcohol, and (iii) at least one diisocyanate and,
- one polyurethane polyether (b) which can be obtained by polycondensation of at least three compounds comprising (i) at least one polyethylene glycol comprising from 50 to 500 mol of ethylene oxide, (ii) at least one C8-C30 fatty alcohol other than that of the at least one polyurethane polyether (a), and (iii) at least one diisocyanate.
A device for bleaching keratin fibers comprising two compartments wherein:
- a first compartment comprises at least one composition chosen from powders and aqueous compositions,
- a second compartment comprises at least one aqueous composition,
- at least one of the two compartments comprises at least one oxidizing agent, and
- at least one of the two compartments comprises at least one composition comprising a combination of at least:
- one polyurethane polyether (a) which can be obtained by polycondensation of at least three compounds comprising (i) at least one polyethylene glycol comprising from 50 to 500 mol of ethylene oxide, (ii) at least one C8-C30 fatty alcohol, and (iii) at least one diisocyanate and,
- one polyurethane polyether (b) which can be obtained by polycondensation of at least three compounds comprising (i) at least one polyethylene glycol comprising from 50 to 500 mol of ethylene oxide, (ii) at least one C8-C30 fatty alcohol other than that of the at least one polyurethane polyether (a), and (iii) at least one diisocyanate.
Dependencies are inferred from the claim text.