Patent ID: 6287546
Filing Date: 2001-09-11
Classification: A61K,A61Q

Abstract:
A stabilized shampoo formulation comprising(a) 5-30% of a mixed anionic and amphoteric surfactant system where the ratio of anionic to amphoteric is from 60:40-40:60 and wherein:(1) the anionic surfactant is selected from the group consisting of:(i) alkyl and alkyl ether sulfates of formula R.sup.20 OSO.sub.3 M and R.sup.20 O(C.sub.2 H.sub.4 O).sub.w SO.sub.3 M, wherein R.sup.20 is alkyl or alkenyl of 10-20 carbon atoms, w is a number from 1 to 10, and M is a water-soluble cation selected from the group consisting of ammonium, sodium, potassium and triethanolamine;(ii) reaction products of fatty acids esterified with isethionic acid and neutralized with sodium hydroxide;(iii) succinamates; and(iv) olefin sulfonates having 12 to 24 carbon atoms; and(2) the amphoteric surfactant is selected from the group consisting of:(i) derivatives of aliphatic secondary and tertiary amines in which the aliphatic radical can be straight chain or branched and wherein one of the aliphatic substituents contains from 8 to 18 carbon atoms and one contains an anionic water solubilizing group;(ii) zwitterionic surfactants in which the aliphatic radicals can be straight chain or branched, and wherein one of the aliphatic substitutents contains from 8 to 18 carbon atoms and one contains an anionic water-solubilizing group selected from the group consisting of carboxy, sulfonate, sulfate, phosphate, and phosphonate;(iii) betaines;(b) from 0.1-15% of at least one siloxysilicate material wherein the siloxysilicate is represented by Formula IA: ##STR4##whereinR.sup.4, R.sup.5, R.sup.6, and R.sup.7 are each independently selected from the group consisting of phenyl and C1-C12 branched and unbranched hydrocarbons;M.sup.1 and M.sup.2 are each independently from the group consisting of(1) hydrogen;(2) phenyl;(3) phenethyl;(4) a polyether of Formula II:--CH.sub.2 --(CH.sub.2).sub.n --(O--CH(R.sup.10)--CH.sub.2).sub.u --(OCH.sub.2 --CH.sub.2).sub.v --OR.sup.11 Formula IIwhere n is a number from 1-20 and the --(CH.sub.2)-- chain may optionally contain 1 or 2 unsaturations; u and v are integers each independently selected from 0-20, provided that u+v>1; R.sup.10 is selected from C1-C20 alkyl; and R.sup.11 is selected from the group consisting of H, --CH.sub.3 and --C(O)CH.sub.3); and(5) C1-C24 branched and unbranched hydrocarbons optionally substituted by a halogen substituted C1-C3 hydrocarbon radical, with a particular value for R.sup.2 being C1-C24 alkyl, especially methyl; andwherein (x+y)/z is a number in the range of 0.5 and 4.0; orwherein the siloxysilicate is represented by Formula IB: ##STR5##wherein x'/z' is a number between 0.5-1.5; x' and z' are selected so that the MQ resin has a viscosity in the range of 1.0.times.10.sup.3 -1.times.10.sup.6 centipoise; R.sup.1 and R.sup.3 are each independently selected from the same group as defined for R.sup.4, R.sup.5, R.sup.6 and R.sup.7 of Formula IA; R.sup.2 is selected from the same group as described for M.sup.1 and M.sup.2 ;(c) from 0.10-7.00% of at least one member of a selected stabilizing agent selected from the group consisting of(i) long chain fatty alcohols with greater than 14 carbons;(ii) acrylates/steareth-20 methacrylate copolymer; acrylates copolymer; and acrylates/C10-30 alkyl acrylate crosspolymer; and(iii) N,N-disubstituted phthalamic acids and their ammonium salts selected from the group consisting of Formula III: ##STR6##where R.sup.24 and R.sup.25 may be the same or different and are each selected from the group consisting of C10-C40 straight and branched chain alkyl groups, and C10-C40 straight and branched arylalkyl; and(iv) mixtures of (i)-(iii); and(d) an aqueous carrier;wherein all percents are in weight percents based on 100% active level.