US 5,334,377 A · Alkylamino mercaptoalkylamides and their use as a reducing agent in a process for the permanent deformation of hair

Abstract

Alkylamino-mercaptoalkylamides have the formula ##STR1## where in A represents the divalent radical --(CH.sub.2).sub.n --, wherein n is a whole number ranging from 2 to 5, or the divalent radical --(CH.sub.2).sub.2 --O--(CH.sub.2).sub.2 --, m is 0, 1 or 2, R.sub.1 represents hydrogen or linear or branched lower alkyl having 1-5 carbon atoms, R.sub.2 and R.sub.3, each independently, represent hydrogen or a linear or branched lower alkyl having 1-4 carbon atoms with the proviso that R.sub.2 and R.sub.3 are not hydrogen simultaneously and the salts of the compound of formula I as well as the corresponding disulfides with the exclusion of the disulfide in which A.dbd.--(CH.sub.2).sub.2 --, m.dbd.0, R.sub.1 and R.sub.2 .dbd.H and R.sub.3 .dbd.--C.sub.2 H.sub.5. The compound of formula I is used as a reducing agent in a cosmetic composition for the permanent deformation of hair.

Claims22

Dependent claims

A compound having the formula ##STR6## wherein A represents the divalent radical --(CH.sub.2).sub.n -- wherein n is a whole number ranging from 2 to 5 or the divalent radical --(CH.sub.2).sub.2 --O--(CH.sub.2).sub.2 --,

m is equal to 0, 1 or 2,
R.sub.1 represents hydrogen or a linear or branched lower alkyl having 1-5 carbon atoms,
R.sub.2 and R.sub.3, each independently, represent hydrogen or linear or branched lower alkyl having 1-4 carbon atoms, with the proviso that R.sub.2 and R.sub.3 do not simultaneously represent hydrogen and
the salts of said compound of formula I.

1 more element

A composition for the first stage of an operation for the permanent deformation of hair comprising, in a cosmetically acceptable vehicle for the hair, as a reducing agent at least one alkylamino-mercaptoalkylamide having the following general formula ##STR7## wherein A represents the divalent radical --(CH.sub.2).sub.n -- wherein n is a whole number ranging from 2 to 5 or the divalent radical --(CH.sub.2).sub.2 --O--(CH.sub.2).sub.2 --,

m is 0, 1 or 2,
R.sub.1 represents hydrogen or a linear or branched lower alkyl having 1-5 carbon atoms,
R.sub.2 and R.sub.3, each independently, represent hydrogen or linear or branched lower alkyl having 1-4 carbon atoms, with the proviso that R.sub.2 and R.sub.3 do not simultaneously represent hydrogen, and a salt of said compound of formula (I).

Dependencies are inferred from the claim text.

Alkylamino mercaptoalkylamides and their use as a reducing agent in a process for the permanent deformation of hair

Life of this patent

Alkylamino mercaptoalkylamides and their use as a reducing agent in a process for the permanent deformation of hair

Life of this patent

Abstract

Claims22