Cleansing compositions

A - Human Necessities – 61 – K

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A61K 7/50 (1995.01)

Patent

CA 2306402

A rinse-off liquid personal cleansing composition comprising: (a) water, (b) from about 1 % to about 60 % by weight of a water-soluble surfactant, (c) a water-insoluble oil selected from highly branched polyalphaolefins having formula (1) wherein R1 is H or C1-C20 alkyl, R4 is C1-C20 alkyl, R2 is H or C1- C20, and R3 is C1-C20 preferably from C5-C20, n is an integer from 0 to 3 and m is an integer of from 1 to 1.000 and having a number average molecular weight of from about 1.000 to about 25,000, and (d) a crystalline, hydroxy- containing stabilizer selected from (i) wherein R1 is -(C=O)- R4(COH)xR5(COH)yR6, R2 is R1 or H, R3 is R1 or H, R4 is C0-20 alkyl, R5 is C0- C20 alkyl, R6 is C0-C20 alkyl, R4+R5+R6=C10-22, and wherein 1x+y4, (ii) R7- (C=O)-OM, wherein R7 is -R4(COH)xR5(COH)yR6, M is Na+, K+, or Mg2+, or H, and (iii) mixtures thereof. The personal cleansing compositions of the invention provide excellent product stability and rheology characteristics as well as excellent rinse feel and skin mildness.

La présent invention concerne une composition nettoyante liquide d'hygiène personnelle apte à être rincée comportant: (a) de l'eau; (b) environ 1 % à environ 60 % en poids d'un tensioactif soluble dans l'eau; (c) une huile insoluble dans l'eau choisi parmi les polyalphaolefines à forte ramification correspondant à la formule (1) où R?1¿ est H ou un alkyle en C¿1?-C¿20?, R?4¿ est un alkyle en C¿1?-C¿20?, R?2¿ est H ou C¿1?-C¿20?, et R?3¿ est C¿1?-C¿20? de préférence de C¿5?-C¿20?, n est un nombre entier compris entre 0 et 3 et m est un nombre entier compris entre 1 et 1000 et ayant un poids moyen numérique moléculaire compris entre environ 1000 et environ 25000; et (d) un stabilisateur cristallin, contenant de l'hydroxy choisi parmi (i) où R1 est -(C=O)-R4(COH)xR5(COH)yR6; R2 est R1 ou H; R3 est R1 ou H; R4 est un alkyle en C¿0?-C¿20?; R5 est un alkyle en C¿0?-C¿20?; R6 est un alkyle en C¿0?-C¿20?; R4+R5+R6 = C¿10?-C¿22?; et 1?x+y?4 (ii) R7-(C=O)-OM, où R7 est -R4(COH)xR5(COH)yR6, M est NA?+¿, K?+¿, Mg?2+¿, ou H et (iii) leurs mélanges. Lesdites compositions nettoyantes d'hygiène personnelle présentent d'excellentes propriétés de stabilité et de rhéologie de produit ainsi qu'un excellent toucher au rinçage et assure la douceur de la peau.

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