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US 5,972,323 AGranted
Hydrolytically cleavable active ingredient derivative compounds, hair treatment compositions containing them and hair treatment methods
AssigneeWella Aktiengesellschaft
InventorsGunther Lang, Rudolf Bimczok, Thomas Czigler, Thomas Kripp
Life of this patent
Estimating the term…
Abstract
The new active ingredient derivative compounds have the formula (I) ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 are the same or different and are each an unsubstituted or substituted alkyl group, Y is an unsubstituted or substituted alkylene group, R is an active ingredient group which, prior to ester formation, has at least one OH group and A.sup.- is an anion. A process for making the compounds of formula (I) is described. Hair treatment compositions containing these compounds and methods of treating hair with these hair treatment compositions are also described.
Claims5
A method of treating hair comprising
- a) providing an aqueous hair treatment composition having a pH of from 2 to 7 and containing water and at least one active ingredient derivative compound of formula (I) ##STR5## wherein R.sup.1, R.sup.2 and R.sup.3 are the same or different and are each an unsubstituted alkyl group having from one to six carbon atoms or a substituted alkyl group having from one to six carbon atoms and one or more hydroxy or amine group substituents;
- Y is an unsubstituted alkylene group having from one to six carbon atoms or a substituted alkylene group having from 2 to 10 carbon atoms and at least one hydroxy group, amino group, O-acetyl group or quaternary ammonium group substituent;
- R is an active ingredient group of an active ingredient of the formula ROH, said active ingredient being selected from the group consisting of lauryl alcohol, myristyl alcohol, cetyl alcohol, panthenol, cholesterol, farnesol, retinol, didehydroretinol, calciferol, tocopherol, vitamin K.sub.1, vitamin K.sub.2, ethyl vanillin, geraniol, nerol, linalool, .alpha.-terpineol, menthol, thymol, rutin and p-hydroxybenzoic acid esters, and A.sup.- is an anion;
- b) applying an amount of said hair treatment composition sufficient to treat the hair to said hair;
- c) allowing said hair treatment composition applied to the hair in step b) to act on the hair for an acting time of from 1 to 60 minutes at 15.degree. C. to 50.degree. C.;
- d) after step c), treating the hair with an alkaline solution for 1 to 15 minutes;
- and
- e) rinsing the hair with water, and washing the hair with a shampoo as needed and drying the hair;
- wherein said alkaline solution contains from 0.5 to 10 percent by weight of a member selected from the group consisting of ammonia, guanidine, ammonium carbonate, ammonium hydrogen carbonate, alkali carbonates and alkali hydrogen carbonates.
6 more elements
A method of treating hair with an active ingredient of formula ROH, said method comprising
- a) providing an aqueous hair treatment composition having a pH of from 2 to 7 and containing water and at least one O-acetyl carnitine ester of formula (I) ##STR6## wherein R.sup.1.sub.1 R.sup.2 and R.sup.3 are each methyl groups, Y is --CH.sub.2 --CH(OOCCH.sub.3)--CH.sub.2 -- and R is an active ingredient group of said active ingredient of the formula ROH and said active ingredient is selected from the group consisting of lauryl alcohol, myristyl alcohol, cetyl alcohol, panthenol, cholesterol, farnesol, retinol, didehydroretinol, calciferol, tocopherol, vitamin K.sub.1, vitamin K.sub.2, ethyl vanillin, geraniol, nerol, linalool, .alpha.-terpineol, menthol, thymol, rutin and p-hydroxybenzoic acid esters, and A.sup.- is an anion;
- b) applying an amount of said hair treatment composition sufficient to treat the hair to said hair;
- c) allowing said hair treatment composition applied to the hair in step b) to act on the hair for an acting time of from 1 to 60 minutes at 15.degree. C. to 50.degree. C.;
- d) after step c), treating the hair with an alkaline solution for 1 to 15 minutes;
- and
- e) rinsing the hair with water, and washing the hair with a shampoo as needed and drying the hair;
- wherein said alkaline solution contains from 0.5 to 10 percent by weight of a member selected from the group consisting of ammonia, guanidine, ammonium carbonate, ammonium hydrogen carbonate, alkali carbonates and alkali hydrogen carbonates.
4 more elements
Dependencies are inferred from the claim text.